The Journal de l`Association #25

J o u r n a l
Friends of the “Shamr ock” Hydrangea Collection
j o u r n a l
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www.hortensias-hydrangea.com
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by Bryan Woy, President
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Editorial
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Bryan Woy
Activi ties of th e S oci ety
The Le moi nes
Jean-François Gonot
Work in t he collection 2013
Creat in g a h y dran gea g arden
Michaël Potel
Work in the collection 2013 (contd.)
About H. longipes
Corinne Mallet
Hydrangea Symposium Japan 2013
Bernard Schumpp
Hy dra ng eas a nd in se cts
André Dieval
Hi s to ry of De jima: Si eb ol d
Marion & Mathias Riedel
Med ia, D istinctions, Le tte rs
About H. involuc rata
Ishii Chitose
Mutat ions in H . inv oluc rata
Robert Mallet
Shamrock Plant Days 2013
H. Sa rg e nt ia na , a r e d is c ov e r y
Mark Libert
Ozzie Johnson in Vietnam
(letter)
Ab o u t H . lo ng ip es (a dden da)
Corinne Mallet
Activities of the Society
Frost susceptible plants
Michaël Potel
T
S
p. 1
p. 2
p. 3
p. 4
p. 5-7
p. 8
p . 9-10
p. 11
p. 12
p . 13-15
p. 16
p. 17-18
p.19
p. 20
p. 21-22
p. 22
p. 23
p. 24
p. 24
E d i t o r i a l t e a m : Ishii Chitose, André Diéval, J-F Gonot, Ozzie
Johnson Mark Libert, Corinne Mallet, Robert Mallet, Michaël
Potel, Marion and Mathias Riedel, Bernard Schumpp, Bryan Woy.
E n g l i s h T r a n s l a t i o n a n d D r a w i n g s: Bryan Woy.
C h i e f E d i t o r: Corinne Mallet
D e s i g n a n d c r e a t i o n : Association Shamrock 2014
L a y o u t : Corinne Mallet
The articles in this journal are publis h e d u n d e r t h e i r a u t h o r s ' r e s p o n s i b i l i t y.
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The Medicine Bud dha in Shamro ck Garden
The Society's activities and other news
THANKS for 2013
The Association thanks all members and non-members who have helped to make the past
year another good one for the Shamrock Collection, including everybody who took part
in preparation and visitor reception for our annual event “2000 hydrangeas for
Shamrock” (2013 Edition), starting with Bérengère de Bodinat and Bruno Blanckaert for
once again welcoming us to their home, “Casanova”, but also Gilbert Baudoin, Pierre
C o u r q u i n , J e a n - M a r i e D a u c h e z , D a n i e l K u s z a k , M a r t i n e M e r l i n , B e r n a r d To r d e u r s , J e a n P i e r r e P é a n a n d C y p r i e n Ve d r e n n e . T h a n k s a s w e l l t o a l l t h o s e w h o p r o v i d e d p l a n t s f o r
t h i s e v e n t : A n d r é D i é v a l , K e e s E v e l y n s , D i d i e r B o o s , L i o n e l C h a u v i n , H e n r i M e r c i e r,
E t i e n n e L e m e s l e ( To u s a u J a r d i n ) , C h r i s t o p h e M a r s i l l e ( Va l l o n C h ê n e ) , a n d , p a r t i c u l a r l y,
Jean Renault; also Michel Brunet and his sons who helped with transport. Thank you to
t h e “ L a Tr a v e r s e ” e d u c a t i o n a l c e n t r e ( M a r i e - J o B o u l a n g e r ) a n d i t s s t u d e n t s , w h o h e l p e d
with the upkeep of the collection. Several planting sessions took place thanks to JeanPierre Péan, Pierre Courquin, Jean-Marie Rouet and Christiane Le Scanff. The following
members contributed in various capacities: Bernard Schumpp (publishing the Index,
organizing the trip to Japan for the Symposium, visits to national and international
exhibitions and monitoring of protection), Andre Diéval (rescuing and naming endangered plants, articles), Hélène Béréhouc (propagating endangered plants), Josiane and
Henri Lamache (public relations), Roger Dinsdale (plant protection monitoring), Sophie
Le Berre (Japanese-French translation), Pierre Le Claire (photo-journalism, conservation), Marc Libert (Ghent University), Masumi Miyauchi (miscellaneous advice),
P h i l i p p e P i c h e r i t ( I T h e l p ) a n d G h i s l a i n e L e G a l l d u Te r t r e ( d e l i c i o u s m e a l s a t t h e
Piment Bleu). On several occasions the following came to help us with logging, heavyduty weeding and dead-heading, among other things: Andre Dieval and Madeleine Alves,
Daniel Kuszak, Jean-François David, Stéphane Brugère, Jean-Marie and Christiane Rouet,
Christiane Le Scanff and Jeanne Pavie. Many thanks, too, to our foreign correspondents:
i n t h e U S A : J e a n A s t ro p , O z z i e J o h n s o n , a n d Ly n d e n M i l l e r ; i n J a p a n : I s h i i C h i t o s e a n d
Ta k a a k i S u g i m o t o ; i n E u r o p e : M a u r i c e F o s t e r, R o g e r D i n s d a l e , H a r r y v a n Tr i e r, Ya n
Oprins, Sieghart Prkno and Matthias Riedel; as well as media correspondents who have
helped us: Isabelle Lebrun (of the France-Bleue radio station), Jinge Lim, Marie-Noelle
C r u y s m a n s a n d M a r i e - P a s c a l e Va s s e u r ( f o r “ L e s J a r d i n s d ' E d e n ” ) , J e a n - F r a n ç o i s G o n o t ,
J e a n - M a r i e F l o r e n t ( L o c o n ) , M a r i a n e L o i s o n a n d Yv e s M a r c h a n d a i n .
Visits and important events a t Shamrock in 2013
THE APJHN PRIZE www.arpjhn.net
We were very proud and pleased to be awarded a prize by the Association des Parcs et Jardins de
Haute-Normandie. All members of our society who have contributed in one way or another to this
recognition must be conscious of what an honour it is to receive this prestigious award. It comes as a
culmination of the support that this regional association has shown us in recent years, and we are
most grateful for it.
VISIT BY THE AMERICAN HYRANGEA SOCIETY, ATLANTA
www.americanhydrangeasociety.org
Going beyond the moral and financial support that the AHS showed us during our trip to Atlanta in
April 2013, on 19 July we had the great pleasure of receiving a visit by members led by the society's president Sandy Jones. This year has therefore been an opportunity to strengthen the ties
between our societies, who have been working together since 2001, thanks to Ozzie Johnson's
unfailing friendship and Jean Astrop's generous hospitality. We were able to see Elizabeth Dean
and Gene Griffith again (Wilkerson Mill Gardens), and discover the nursery of Scott McMahan
(Gardenhood), an explorer we would also like to thank for his support.
Note: Shamrock participated modestly in financing a Seed Collecting Trip to Vietnam 2013 with Ozzie Johnson.
GROUP VISIT ORGANISED BY LUC NOËL
groupe@evatours.fr
(presenter of the Belgian RTBF TV programme
“Jardin-jardinier” who had produced a TV report
about Shamrock in 2012 :
www.youtube/com/user/jardinjardinier).
SPEECH BY LYNDEN B. MILLER
(4 July, Luneray)
This great American landscape gardener, who
transformed many of the public parks and gardens in New York City, told us about her adventure. You can read her book: Parks, Plants &
People (W. W. Norton & Company 2009), and
see her talking about her philosophy and message at :
www.youtube.com/watch?v=xItapO_NJpg
2
New members 2013
We are pleased to welcome the following new
members:
Elisabeth BELLELGO
Jacques BEMBERG (CH)
Ghislaine &
Jean-Pierre CRESCENTINI
Anne-Marie DEL MARMOL
Dominique EVRARD
Marie-Claire GIRARDIN
Gonzalo GONZALES (ES)
Christine GUIGON
Arnauld GUILLY
Bob HOWARD (CN)
Bernie & Janique BOUTRY
Jean-Baptiste LEROY
Marie-Madeleine BARLE
Clothilde MARCHAND
Dr. Jean-Claude MARZEC
Joël MORDELET
Sandrine & Philippe MOUTON
Louis & Monnica ORIET
Virginie REICHARDT
Véronique SCHMIT
Nadia SOUABRIA
Roland & Sylvie STUTZMAN
Marie-Odile THOUVENIN
Elisabeth & Nicolas TRUELLE
Dominique & Corinne VINCENS
The Lemoines, breeders of genius
Jean-François Gonot
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LIST OF HYDRANGEAS
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BRED BY LEMOINE
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18941894 'Otaksa Monstruosa'
1904 'Mariesii Perfecta' (Blue K46K64.-62#6:#./*#KA02.+#./*3#14*9#/0F*#9-+0KK*04*9D#X/467?/#+-?2-:-502.
Wave'), 'Mariesii Lilacina'
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(Lilacina'), 'Mariesii
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Grandiflora' ('White Wave')
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1907-1908 'Avalanche', 'La
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D. Bois', 'Éclaireur', 'Étincelant',
'Fraîcheur', 'Bouquet Rose'
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1909 'Dentelle', 'Mousseline',
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'Ornement'
1910 'Innocence', 'Mont Rose',
'Diane', 'Sénateur Henri David'
1911 'Dôme Fleuri', 'Galathée',
'Harmonie', 'Surprise', 'Florisse'
1912 'E.G, Hill', 'Liberty',
Joconde', 'Richesse'
1913 'Directeur Vuillermet'
1915 'Trophée', 'Progrès'
1916 'Satinette'
1918 'Amazone', 'Terre de Feu'
1920 'Gracieuse', 'Lakmé',
'Matador', 'Rosalinde'
1922 'Magenta'
1921-1926 'Cendrillon',
'Rubis', 'Candeur', 'Miranda',
'Rouget de Lisle'
Hydrangea ‘Mousseline’
3
Work in the collection, 2013
Typhoon-like cloud, 27 July 2013
One of the lime trees knocked down
by the storm
Jean-François David: a small figure in
the midst of the destruction
André Dieval & Jean-François David
4
Jean-Baptiste Leroy
Blanche Maison:
creating a hydrangea garden using landscape fabric
Michaël Potel
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5
Blanche Maison:
creating a hydrangea garden using landscape fabric
General view
H. ‘Decatur Blue’
H. 'Xian' and H. 'Côte d'Azur'
(in front)
6
H. ‘Selma’
Blanche Maison:
creating a hydrangea garden using landscape fabric
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7
Work in the collection, 2013
It is impossible to forget the typhoon-like storm, announced by a strange cloud shape, which
struck our region on 27 July, affecting the Dieppe area and particularly the villages of Luneray,
Greuville, Avremesnil, and Varengeville. It was the lime trees in the western alley at the collection that bore the brunt of the storm, with five of them blown down. The job of clearing and
making everything safe took several weeks, but thanks to everyone's efforts, it was possible to
keep the collection open to visitors (see photo on page 4).
There remained the major concern of the excessive growth of the hazels, birches and hornbeams in Green Dragon Wood, which were depriving the hydrangeas of the light they desperately needed in order to grow. This was particularly true for the H. aspera at the top and some of
the H. serrata at the bottom of the wood. There were also some Paulownias in the original part
of the collection which had been planted too close together and needed to be cut back.
This was the task of the weekend of 15/16 November when no fewer than 11 members worked
hard to create shafts of light, cutting and storing the logs, while the leafy branches were
brought down and dealt with separately.
It is well worth repeating once again that without the generous help of Christiane Scanff and
Jean-Marie Rouet, the Shamrock collection would not look nearly as good as it does today,
since they began their regular and systematic work here three-years ago, with the goal of
thoroughly weeding all the beds.
CURRENT WORK
Christiane Rouet, Robert, Hervé Lepetit,
Madeleine Alves & Daniel Kuszak
Jean-Marie Rouet
J.-P Péan, Pierre Courquin,
Pierre Le Clair
Daniel Kuzsac & André Dieval
Daniel Kuszak
Christiane Le Scanff
8
More work in the
Green Dragon Wood
is planned for
March, removing
stumps to prevent
the spread of honey
fungus. We will also
attempt to remove
an ash tree whose
rather too greedy
roots are threatening new beds of H.
serrata at the bottom of the wood.
On the “crop circle”,
with the agreement
of the nurseries
concerned, some cultivars will be replaced by new varieties
to help continue the
experimental work
that the Shamrock
collection has now
been carrying out in
this location for 3
years. The plants
removed will be sold
at the next annual
event at the end of
April.
About H. longipes
FRANCHET
Corinne Mallet
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9
H. longipes FRANCHET, herbarium specimen of
the type, Museum of Natural History Paris
About H. longipes
H. longipes FRANCHET, detail of inflorescence
FRANCHET
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$9,4"6,/$&4'/4,#/,-G&
H. robusta HOOKER F. & THOMSON, collected by
J.D. Hooker, detail of inflorescence
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-"$D3/4%&-"$%#"23%"'/8&%+)%&%+,$,&%5'&9*)/%$&-'&/'%
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H. longipes HEMSLEY, from the Museum of
Natural History, Paris
1 : A monograph of the genus HYDRANGEA, by E. McClintock, in Proceedings of the California
Academy of sciences, Fourth Series, VolXXIX, N°5, pp. 147-256, November 5, 1957.
2. Portraits d’hydrangéas, Corinne Mallet, ed. Eugen Ulmer, 2008.
3. Engler’s Botanische Jahrbücher für Systematik 29:376. 1901.
10
"Hydrangea 2013" Symposium in Kamakura (Japan)
Bernard Schumpp
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M. B.SCHUMPP, Prof. Emeritus Hideaki OHBA, M. Jean RENAULT.
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Bernard Schumpp, J.-P. Péan,
Sugimoto san et Jean Renault
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1
2
11
3
Hydrangeas and insects
André Diéval
Hydrangea inflorescences never go unnoticed: they are
varied, with bright or pastel colours, with opulent looking flower
heads for the “mop heads”; huge globes for some, and a proliferation
of small globes for others.The H. paniculata and H. quercifolia species have imposing panicles, bending under the weight of their flowers.Those with “lace cap” inflorescences are not far behind, with
their very attractive, small, numerous, fragrant and fertile sterile florets and their delightful little fertile flowers that change colour
according to the mood of Mother Earth.
All this is a pleasure for our eyes, but for theirs too: insects of all
kinds cannot resist them.The “browsers” are legion: honey bees,
bumble bees, hoverflies, butterflies, and all the rest, revel in the nectar. Some insects find refuge in the flowers, others, predators, use
them as a hideout.They are a real gift for this miniature living world.
Evocative names pay homage to some of these insects: for
Hydrangea paniculata 'Papillon' ('butterfly'), there is no need to comment. For the “Map” butterfly Araschnia Levana, which gives its name
to a hydrangea, (H. paniculata 'Levana'), the insect is a faithful admirer
of this plant
The scent of some hydrangeas fills the atmosphere and attracts all
these little creatures: a pleasure for our gardens and our beehives;
bees abound on the species Hydrangea aspera, villosa, Kawakamii
and Sargentiana, which all contain wholesome food for these guests.
The late flowering of these species is a vital advantage for insects; a
real godsend for them before they have to face the winter.
How can we remain indifferent to this wonderful show? Nature is
so beautiful and generous, and a joy for all of us, large and small,
whether we have eight, six, four or only two legs!
Photos from top to bottom, left to right:
1: Meadow Brown,
(Maniola jurtina) on
H. arborescens
2: Hoverfly
(Episyrphus balteatus) on H. serrata ssp.
yezoensis
3: Silver-washed Fritillary
(Argynnis paphia) on
H. aspera 'Farall'
4: Bush cricket
Barbitistes serricauda (female) on H. involucrata var. izuensis
5: “Map” butterfly
Araschnia Levana f.
Prorsa on H. aspera x
villosa 'Mauvette'
6:Yellow jacket wasp:
Paravespula germanica on H. Kawakamii
7: Honey bees: Apis
mellifera on
H. Sargentiana
12
Philipp Franz Balthazar von Siebold
Marion & Matthias Riedel
(Continued from the article published in nos. 23 & 24)
It has rightly been said that among German scientists, Siebold is one of the most
remarkable personalities. His contribution to the introduction of hydrangeas to
Europe constitutes a mere fraction of his immense work.
Siebold came from a family of doctors in Wurzburg. He studied medicine, and then
managed to enter the service of Holland through a friend of his father's, Christian
Gottfried Nees von Esenbeck, president of the Leopoldina . He arrived in Batavia in
1823 with the Dutch East India Company and from there, the same year, went on to
Japan where he was appointed chief physician on the artificial island of Deshima
and also given responsibility for research into natural sciences. Responding to an
appeal by a researcher into medicinal plants, he began daily excursions to investigate the plant and animal world. To this end he bought a house in the valley of
Narutaki which he turned into a kind of “University” for his Japanese friends. At this
site but also around his house on the island of Deshima, he created a botanical garden. Soon 1400 species were being grown.
On the economic front, Siebold devised an original and efficient way of transporting the seeds of tea plants (in
ferruginous clay) which was to form the basis for extensive plantations on the island of Java. But Siebold's main
purpose was to describe the largest possible number of previously unknown Japanese plants following the
Linnaean classification system. His Japanese students were given the task of constantly adding to this collection
as much as possible. To continue with this purpose, Siebold had an absolute need to travel in the direction of
Edo. His collecting fever and inventiveness led him to find an original way to continue: although confined by the
authorities to his home, and only a few weeks away from his departure, he was still keen to increase his collection, so he asked for permission to keep a goat for milk: in this way his students could smuggle in precious
plants in the bales of hay used as food for this goat . Suspected of espionage and imprisoned, Siebold was
allowed to leave Japan in 1829. He was able to gather 1200 species of plants (of which 260 survived the sea
voyage) and a herbarium of 12,000 dried specimens.
One year later, back in Holland, Siebold received unlimited leave from King Willem I to look after his collections.
His first shipment of plants to the Netherlands in 1829, accompanied by his illustrator K.H. de Villeneuve, had
been destined by contract for the Leiden Botanical Garden, but there were no hydrangeas in this shipment. A
second shipment arrived in Antwerp and was dispatched to Brussels (for herbarium specimens) and Ghent (for
living plants). Among the 260 living plants, there was a Hydrangea serrata (Thunb. 'Syringe' Rosalba '(Siebold
described it under the name of H. japonica flor. Roseis).
During the disruption associated with the Belgian Revolution, although he was certainly able to transport his herbarium to Holland, the living plants had to remain in Ghent. But from as early as 1841, Siebold was on several
occasions sent specimens of these plants grown by
Donckelaer, the gardener of the Leuven Jardin des
Plantes. Then in 1843 there was a new arrival in Leiden of
Japanese plants from the Botanical Garden of Buitenzorg
in Java, and among the 28 taxa that survived the sea
voyage, there was, this time, a Hydrangea macrophylla
(Thunb) Seringe, with flat inflorescences, to which Siebold
gave the name H. aslsaï. The majority of the hydrangeas
described by Siebold and cited in this article came from his
second trip to Japan from 1859 to 1861, including, finally,
the famous 'Otaksa', with blue flowers.
1: the German Academy of Sciences.
2: the same story is attributed to Thunberg, who was allowed
much less freedom of movement than Siebold during the six
years of his stay in Japan
13
Philipp Franz Balthazar von Siebold
14
Philipp Franz Balthazar von Siebold
Siebold, with the intention of exploiting his collections in Holland, bought a house in the vicinity of Leiden, which
he called 'Nippon'. There he created a garden of acclimatization where he installed his treasures, including the
blue hydrangea 'Otaksa', which caused a sensation. His collaboration with Joseph Gerhard Zuccarini (17971848) on his return from his first trip was of great importance botanically. The latter was Curator of the Munich
Botanical Garden, a systematic botanist, and a student of Siebold's acquaintance Nees von Esenbeck. Zuccarini
based his work on Siebold's collections, supplemented by other plants sent by Heinrich Bürgers, culminating in
the publication of the “Flora Japonica”.
It contains the following hydrangeas:
H. Azisai (now H. macrophylla 'Yodogama'), H. 'Otaksa' (now H. macrophylla 'Otaksa'), H. japonica (now H. serrata ssp japonica), H. petiolaris (unchanged), H. belzonii (a species that is now lost), H. acuminata (now H. serrata 'Acuminata'), H. thunbergii (now H. serrata 'Thunbergii'), H. stellata (now H. serrata 'Stellata'), H. cordifolia
(now H. petiolaris 'Cordifolia'), H. virens (now H. scandens), H. paniculata (unchanged), H. hirta (unchanged), H.
bracteata (now H. petiolaris) , H. involucrata (unchanged)
In this way the majority of the East Asian species known today were discovered. Many of them are now known,
not under the original species names, but as subspecies or even cultivars.
A large part of Siebold's legacy can be found in the National Herbarium in Leiden. It is in fact possible from the
descriptions in the Flora Japonica to recognize some of the actual specimens in the herbarium, which was then
known as the Royal Herbarium, curated by Karl Ludwig Blume (1796-1862), who in 1826 was still Director of the
Buitenzorg Botanical Garden in Java, and therefore a useful partner for Siebold in his research. Since the publication of his work had brought in substantial sums of money, together they founded an “Association for the introduction of animals and useful plants from Japan, Holland and Austria”. Siebold's students and colleagues in
Japan gave massive support to this enterprise. Based on this success, a society was founded: “Society for the
encouragement of horticulture through the use of Japanese and oriental plants”. This is how a large number of
new plants were successfully introduced into European gardens. In the Hortus Botanicus of Leiden which was
created in 1587 under the name “Garden of free thinking and belief”, the original plants introduced by Siebold
can still be found.
Illustrations
Page 13 :
Portrait of Philipp Franz von Siebold on a
German postage stamp, 1996.
Dutch ship arriving at Deshima; Nagasaki
school of painting from the time of Siebold
Page 14
Four plates showing hydrangeas taken from
Siebold's Flora Japonica, illustrated by Zuccarini
Page 15 : Ukiyo-e print by Kawahara Keiga:
Arrival of a Dutch ship. Philipp Franz von
Siebold with telescope, his Japanese wife O'Taki
San and baby daughter O'lné
15
Press Review
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'Shamrock' Distinctions 2013, for old and
new plants
H. serrata 'Hakusen' (left-hand photo) a “mountain snowball”; Described by Yamamoto
sensei (Colour book n° 157 p. 14) as having been discovered on Mount Hôrai
(Hohraisan) by Kiyoshige Yamaguchi. It has white globular (temari) flowers growing all
along its branches, which bow gracefully towards the ground. Cultivation in semi-shade
does not seem to pose any particular problems.
H. 'Trebah Silver' (centre photo): from Trebah Garden (right-hand photo)in Cornwall
One of the series of H. macrophylla mutations of the 'Ayesha' type (also called 'Silver
Slipper'), we know several other forms: H. 'Edouard Avdeew' and the fine plant bred by
Koos et Wilko Hofstede from 'Mathilde Gütges' which they have archly named 'Hopcorn'
(to go with 'Homigo', 'Hobergine', etc.). 'Silver Slipper' is a natural mutation discovered in
the magnificent Trebah Gardens (http://www.trebahgarden.co.uk) and named on the spot
by the Van Gelderens. Like that of a pure H. macrophylla (e.g. 'Otaksa'), its flowering is
practically constant until the first frosts. It is still not very widespread and unprotected,
which is why we recommend it.
H. involucrata (a seedling) (see photo in the article on p. 19)
Mark Libert of Ghent University tells us:
“This is a selection from Ghent Botanical Garden, noticed for its suckering quality which
could qualify it as a ground cover plant. Maurice Foster told me that for him it is the “best”
of all the H. involucrata he grows. There is no better possible compliment for a new
selection... as far as I'm concerned!”
And the appreciation of Maurice himself:
“...plant one metre tall, compact and suckering nicely. A very beautiful flower”
Note: As this plant originates from a botanical garden, it cannot be commercialised. Growing it is restricted to
private collections approved by the original botanical garden. It nevertheless deserves the utmost attention,
for purposes of observation, conservation and possibly propagation in the required conditions.
16
letters
From Winston Beck : North Carolina State
University
« I'm doing research on Hydrangea paniculata at
North Carolina State University in the US, and I'm
trying to track down as many cultivars of the species
as possible. So far, Chicago Botanic Gardens has the
best collection in the US of H. paniculata with 42 cultivars.
Anyhow, access to your list would be very helpful to
see what kind of progress I'm making in surveying
cultivars of species.
As the results come in, I'll be sure to let you know
what kinds of results we're getting. We're checking
the ploidy of all market-available cultivars, and there
are some subsequent projects to do as well ».
Merci encore,
Winston
De Maurice Foster (29 janvier 2014)
“The involucratas I grow are as follows - I think you
will have them all but if any are of interest, let me
know.
hortensis, Oshima, sterilis, Handemari, Yohraku,
plena, viridescens, Mihara-Kokenoe, Ghent collection
(ex Marc)
Incidentally there is a form of viridescens at
Herkenrode that flowers in the upper leaf axils as
well as terminally. I saw it a few years ago but it
might be worth checking with Koen that it is a consistent character. Interesting.
The ' favorite' is from Ghent BG courtesy of Marc
who gave it to me some years ago. By all means use
my pics. It is about one metre, compact and quietly
suckering. A beautiful flower.”
About Hydrangea involucrata
Ishii Chitose
(Extracts from correspondence with Jean-Pierre Péan)
Hello! Here is H. involucrata 'Sterilis' (= f. sterilis HAYASHI)
The Japanese identify two types of cultivars:
The first has many fertile flowers included in the ball-shaped inflorescence.
We call this type of inflorescence "Han-temari", which means “half ball” (see
photo opposite).
The second type includes very few ornamental flowers (sterile florets); we
simply call it "Temari-tama-ajisai". The young stage is more or less flat, and
the mature stage is a cluster. Late season inflorescences are sometimes pale
pink in colour. I have heard that there is an H. involucrata with virtually no
H. involucrata ‘Han-temari’
ornamental flowers, like H. hirta or H. liukiuensis ... but I've never seen such
an H. involucrata myself.
The advantage of H. involucrata is that they flower on new shoots like
H. paniculata (1) and H. arborescens … So I think the new cultivars should
be better suited to cold conditions in Europe and the United States. Yet these
plants are not so popular yet in the development of new varieties, as are
hybrids of H. macrophylla. None of the new H. involucrata varieties are sold
in Japan. I have only ever seen them on the Esveld online site:
http://www.esveld.nl , where there is an H. involucrata x aspera from
Heronswood and also an H. Kawakamii x involucrata.
Coastal H. involucrata, such as H. involucrata 'Yôraku' (photo opposite) or
'Mihara Kokonoe' can be planted in a sunny position. In this they have the
characteristics of H. macrophylla. Mountain H. involucrata, on the other
hand, such as 'Tamakanzashsi' and the original 'Kokonoe' (to which the
Latin name of f. plenissima was given by Professor Tuyama) are more akin
to the growing conditions of H. serrata.
H. involucrata ‘Yoraku’
Some researchers in the horticultural world compare H. involucrata to the
Jomon people who were the original inhabitants of Japan throughout its territory. The J_mon were driven out by the Yayoi people who came from the
Eurasian continent via the Korean peninsula. Jomon descendants survived
only in the northern island (Hokkaido), in the most northerly areas of mainland Japan, and also at the southern end of the island of Kyushu. The
J.-P. Péan & Ishii Chitose
"Izumo" province is also "Jomon" because the dialect spoken there is the
same as that found in the far north of Japan. Their god was persecuted by
the goddess "Ise". This goddess "Ise" (Amaterasu O-Mikami) is considered the ancestor of the present
imperial family.
The Yayoi people would be in the world of hydrangeas what H. serrata and/or macrophylla were for the
Jomon people: newcomers, even though they probably derive from each other (Professor Uemachi believes
that H. macrophylla are derived from H. serrata). The Jomon people are therefore akin to the Celtic people
in Europe who were driven out by the Germanic tribes to the edges of Wales, England, Ireland, Brittany and
some coastal areas of Spain and Portugal. Some Celtic populations lived in seclusion in remote mountain
areas, as do the mountain H. involucrata.
17
About Hydrangea involucrata
H. involucrata 'Yôraku', 'Mihara Kokonoe' or ‘Kokonoe’ ?
The colour of 'Yôraku' can vary from pale pink (Ohta-Yôraku) to white ('Kohfu-Yôraku'). I do not think that
these colour differences depend on where the plant was collected. 'Yôraku' plants, found widely distributed
throughout Japan, are derived from cuttings of the plant collected on the island of Oshima east of the Izu
Peninsula. They are, therefore, identical, and yet their colour can vary. Perhaps the nature of the soil and its
acidity level could be involved in this. I will try to change the acidity between two pots to see if this is true.
H. involucrata 'Mihara Kokonoe' (photo opposite) also originates from the
island of Oshima. My plant is almost pure white (then turns light green).
Incidentally, the problem of the colour and shape of the inflorescence is
often caused by the date the picture was taken. Each sterile flower gives
birth to a new, sterile floret on the same stem. With regard to 'Kokonoe'
(mountain plant) the same development process for sterile florets is involved, and the last flowers formed also take on a green colour, even if they
are few in number (see p.477 Kawashima index). For both cultivars, inflorescences will differ between early and late flowering.
In his 1979 book, Yamamoto gave the following explanations concerning
'Yôraku' and 'Kokonoe': “'Kokonoe' (photo opposite) was found by Prof.
Tuyama in 1952 in Hakone. It has no single fertile flowers; all the fertile flowers and sterile florets are double. ... I possess a 'Kokonoe' which was collected near Hakone during the Taish_ period (1912-1926). Totally different is
'Yôraku' found by Professor Nakai in Oshima in 1948: it has a few single fertile flowers among double fertile flowers. The sterile florets are always of the
double form. Another 'Yôraku' has recently been found near Kohfu. But this
distinction regarding sterile florets of single or double form does not always
seem to be relevant because I have a 'Mihara Kokonoe' which sometimes
has single fertile flowers”.
(1) Editor's Note: except for H. paniculata ssp yezoensis from northern Japan such as 'Daruma', that flowers on the previous year's
growth. Annual pruning of H. involucrata during their dormant season seems to give better flowering regardless of the type. (See
Jean-Pierre Péan and Jean-Marie Rouet about this)
New introductions at the Shamrock Collection (2013)
H. serrata 'Ai Hime ' LG 2098
H. 'Alcyon' LG 2142
H. serrata 'Ao Yama' LG 2119
H. arborescens 'Astrid Lindberg' LG 2148
H. serrata 'Aya Ezo' LG 2126
H. 'Brilliant' LG 2109
H. 'Câline' LG 2117
H. 'Casino' LG 2112
H. serrata 'Cheju Dô' LG 2101
H. serrata 'Cotton Candy' LG 2099
H. serrata 'Crûg Cobalt' BSWJ6241 A LG 2093
H.serrata 'Crûg Sô Cool' BSWJ6241 B LG 2094
H. 'Dancing Lady' LG 2096
H. 'Expression' LG 2103
H. serrata 'Fugen-no-Hana' LG 2100
H. chinensis 'Golden Crane' DJHCO 499
LG 2095
H. 'Gräfin Cosel' LG 2113
H. serrata 'Hagoro-no-Mai'
H. serrata 'Hakusen' LG 2092
H. paniculata 'Harry's Souvenir' LG 2097
H. 'Inspire' LG 2131
H. 'Snell' LG 2135
H. serrata 'Iyo Komachi' LG 2125
H. serrata 'Kocho-no-Mai' LG 218
H. serrata 'Kuju-no-Hanabi'
18
H. paniculata 'Little Lime' LG 2130
H. 'Mascotte' LG 2105
H. 'Mistral' LG 2115
H. paniculata 'Polar Bear'
H. 'Punch Curaço' LG 2104
H. 'Punch Royal' LG 2114
H. 'Raymond Draps ' LG 2108
H. anomala 'Silver Lining' LG 2145
H. paniculata 'Sparkling' LG 2129
H. serrata 'Tenguzuka Nishiki' LG 2123
H. serrata 'Tsurugi-no-Mai'
H. 'Ville de Dieppe' LG 2141
Mutations in Hydrangea involucrata
Robert Mallet
This species, little known only a few years ago, has seen the number of cultivars continuously increasing; single or
double forms, coloured or white, large or small in size, simple or complex inflorescences. Here are three examples, still
anonymous, of probable "mutations" and a chance seedling, which make us wonder whether H. involucrata have a
richer genetic heritage than we thought, which would explain this tendency towards diversification.
Hydrangea involucrata (nameless seedling)
This is a seedling selected by Ghent Botanical Garden for its suckering behaviour and ground covering propensity. It is
a compact plant about one metre tall, with beautiful inflorescences. As it originates from a Botanical Garden, it cannot
be traded commercially.
H. involucrata 'Toraku Tama' (presented by Emmanuel de La Fonchais)
A magnificent variety which won a prize at Courson in autumn 2009; it is a vigorous shrub, 1.5 to 2 metres tall, flowering from late August until the first frosts, with large globular inflorescences composed of pure white double sterile florets which are tinged with green at the end of the flowering season. Large oval and downy leaves are reminiscent of
H. aspera. Probably a mutation of H. involucrata 'Mihara Kokonoe' (“Tous au Jardin” Nursery)
A compact H. involucrata with star-shaped inflorescences
The plant in the picture is probably a mutation of H. involucrata 'Yôraku' with less tightly packed inflorescences, differing from 'Yôraku' through its more or less pinkish fertile flowers, sharply dentate foliage, and small size and compact
habit. (La Thyle Nursery)
H. involucrata 'Hélène'
A plant with white sterile florets and pale blue fertile flowers which was detected in a batch of Hydrangea involucrata
and temporarily named by us (Kervilou Nursery)
H. involucrata (Ghent)
H. involucrata ‘Toraku-Tama’
Star-shaped H. involucrata
H. involucrata ‘Hélène’
19
Shamrock plant days 2013
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7++.)*$(*(.)$-%.7$&+(#:$J==>.)*$9=#6(#'$-=$.-K$
New
books
A new book about the
Hydrangea genus in Italy:
Ortensie e idrangea: la storia,
le varietà, la coltivazione (175
pages) L'Artistica, 2013 ISBN
978-88-7320-334-6 Published in September
2013, this book by Eva
Boasso Ormezzano, a
Natural Science teacher from
Pinerolo, is interesting for a
number of reasons; first of all
a superb pictorial collection of
the first introductions of
hydrangeas to Europe in the 19th century (Curtis Botanical
Magazine, coloured Flora Japonica from the National
Herbarium in Leiden, among others); then 50 old and new
cultivars and some Hydrangea species, presented on
double-page spreads and photographed in Italian gardens therefore particularly interesting for the Italian public who
until now did not have access
to this kind of monograph in
their own language.
Price : € 28,00 can be bought directly
from the author - Prof. Eva Boasso
Ormezzano, email: eva.boasso@libero.it - tel. 333.6085508
In Japan : Nippon no ajisai zukan
This book, which came out in
2011, is very modern in its
presentation; it presents the
whole Hydrangea genus and
above all, with beautiful photos, it showcases new
Japanese plants: many cultivars of H. Luteovenosa and
H. scandens with coloured sterile flowers, all of this accompanied by advice about growing and visits to outstanding
parks in Japan.
ISBN 978-4-7601-3819-7- ¥ 3,400 (about € 30 excl. p. & p.) Can be ordered
from Japan via: www.amazon.co.jp , quoting ISBN : delivery in 1 or 2 weeks.
Total price including delivery about € 37.
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20
Hydrangea Sargentiana
a rediscovery by Ghent University researchers
Mark Libert*
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21
Hydrangea Sargentiana
a rediscovery by Ghent University researchers
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Ozzie Johnson in Vietnam, November 2014
“I'm finally sleeping ok after arriving from Vietnam collection trip. Maybe old men should not try to keep doing young
man activities. Climbing these mountains is the most difficult thing I have ever done. It took a week before I felt
strong enough to keep up with the group. None of us could keep up with the porters who carried about 50 kilos of
food and equipment.Our collections were good with a good number of rare Magnolias, Maples, Rhododendrons,
Viburnums, Gesneriads, Begonias Ferns, but NOT Hydrangeaceae. I was so disappointed. One collection of
Hydrangea. Two of us went on to Myanmar for a scouting trip for next year and found the north to be mostly unexplored since Frank Kingdon-Ward did his work in the 1920's and 1930's, so we are excited about next year.”
22
À propos de H. longipes
FRANCHET
(addenda des pages 9 et 10)
H. Maximowiczii LEVEILLÉ (holotype),specimen kept at the
Edinburgh Botanic Garden.
A plant (right-hand photos, in Maurice Foster's collection) is grown by some collectors under the name
H. robusta HOOKER F. & THOMSON . However, when we
look at the sterile florets, we see that the sepals are
entire or slightly crenate, unlike the specimen plant of
H. robusta, whose sterile florets are distinctly dentate,
whether in the herbarium of the New York Botanical
Garden illustrated on page 10 of this journal or in the
specimen type preserved at the Smithsonian.
H. longipes
FRANCHET,
in vivo in the Shamrock Garden
As the author of this article, I would like to express my sincere thanks to
the Botanical Gardens of Paris, Edinburgh and New York, all of whom, by
providing free scans of their herbarium specimens via internet, have
enabled this article to be written. I also especially wish to thank the
Biodiversity Heritage Library, which puts all the old botanical records on
line free of charge, allowing researchers all over the world to carry out studies that would otherwise be almost impossible to achieve.
Corinne Mallet.
On the other hand this plant in vivo seems to correspond to the H. Maximoviczii LÉVEILLÉ (upper left photo),
which was later grouped together with other plants
under the name H. aspera ssp. robusta by Dr.
McClintock, through both the general shape of the
mature leaf, quite similar to the herbarium, and the
resemblance of the sterile florets.
The photo at lower left shows a living specimen of
H. longipes FRANCHET growing in the Shamrock Collection.
23
Shamrock Events
Plant Festivals
Our annual "2000 hydrangeas for Shamrock"
event will take place on 26 and 27 April 2014 in
Varengeville. Would anybody willing to help
with installation, selling or dismantling, please
get in touch with us.
Don't forget the Journées Doullenaises at the
Jardins d'Agrément in Doullens, in the Somme
department, on 24 and 25 May 2014.
Frost susceptible plants at Blanche Maison
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HAYATA, from Taiwan
t
a
c
t
u
s
Association des Amis de la Collection d’Hydrangea “Shamrock”
(or : Association “Shamrock”) route de l'Église, 76119
Varengeville-sur-Mer, France
tel : (00 33)2 35 85 14 64
Email : shamrock76@wanadoo.fr
Web site : www.hortensias-hydrangea.com
Illustrations in this number
drawings : Bryan Woy. photos : Ishii Chitose pp. 17, 18. - André
Diéval pp. 1, 4 (except cloud), 8, 12, 20 (lower). - E. de la
Fonchais p. 19 (upper right). - Ghent Botanical Garden p. 19
(upper left). - Corinne Mallet p. 20 (upper). - Robert Mallet, pp.
3, 16 (left), 23 (lower left). - Kervilou Nursery p. 19 (bas droite) . - Michaël Potel p.6, 24 - Bernard Schumpp p. 11. - Eric
Tarrit (cloud) p. 4. -Trebah Garden p. 16 (lower right)