Saturday, 17 January 2015

The importance of records


Rhododendron 'Fugen-no-tsuki' (flower is 3 cm across)
Before Christmas I was surprised to find a few flowers on an azalea in our garden in Ray Wood at Castle Howard. I took a sprig home with me, writing the accession number on the back of a leaf as usual, and looked it up. We have it labelled as Rhododendron kiusianum 'Fugenno-tsugi', but the International Rhododendron Register gives the spelling as 'Fugen-no-tsuki', and the plant seems to match the description given there (though it doesn't mention that the calyx is petaloid, as it is on these flowers).

The Yorkshire Arboretum database contains the notes made on each plant added to the collection by the late Jim Russell, and in this case there is a general commentary on the variation of R. kiusianum and its propensity to form hybrids with other species. There is also a line giving the information: "Wild collected forms introduced by the National Arboretum, Washington. A plant each from Windsor, autumn 1981. NA 40818".


Intrigued, I emailed my friend Dr Richard Olsen at the United States National Arboretum to enquire if anything more was known about this source. He passed the enquiry to their Plant Records officer Stefan Lura, who replied with all the details one could wish for. In 1976 Dr John Creech and 'Skip' (Sylvester) March from USNA went to Japan to collect interesting plants from small nurseries, which, it was felt, were disappearing and good plants were at risk of being lost. One of the groups of plants they focused on were selections of Rhododendron kiusianum, or hybrids thereof, that had been collected in the mountains and brought into cultivation. Their success with this is described in detail in an article by Ronald Bare, fortunately available online. 'Fugen-no-tsuki' was one of fourteen cultivars obtained from a nursery "called Kyoma Yokota, located near Mt. Unzen in Kunimiche, Minami Takaki-gun. The nursery is run by a young Japanese woman under the watchful eye of her elderly father." It was given the collection number C&M 563, and then the accession number NA 40818.


By 1979 the USNA had propagated enough cuttings from the imported plants to offer them to other institutions. Their database shows that in that year material of eleven clones was sent to Wisley and to Sir Harold Hillier. I enquired how, in that case, had Jim Russell obtained material from Windsor. This prompted Stefan to hunt through records that had not made it to database: sure enough, in the distribution records for 1980 he found a request form, completed by Skip March, authorising the sending of 16 clones to John Bond, then Keeper of the Royal Gardens in Windsor Great Park. The material was sent on 24 November 1980. It was obviously on one of Jim Russell's forays there, in autumn 1981, that he acquired the plants we now grow (we also have several more of these clones, which I'll look out for in normal flowering season). Whether he grew them from cuttings, or whether John Bond gave him the original plants is unknown, but the next step is to find out if any of them are still grown at Windsor - 'Fugen-no-tsuki' is no longer cultivated by USNA in Washington DC, and it's not at the Hillier Gardens or Wisley either.


All this information is now recorded in our database, making the history of one small, obscure azalea that much more complete - I'm very grateful to Stefan Lura for his interest in hunting out the records.


4 comments:

  1. How impressive. Although I try to keep a list, I can't remember the all the names of the plants of my handkerchief of a garden,, while some quite elderly members of our Friday Forum garden club at Paxton Hall Leeds can recall all theirs!
    http://gardenersfridayforum.blogspot.co.uk/

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  2. I sent your e-mail to a Japanese gardener friend of mine who worked at the garden in Windsor as a trainee in 2004/05. She tells me that they hold the National Collection of Rhododendron, as I am sure you know. The meaning of 'Fugen-no-tsuki' is 'the moon of Fugen', and she adds that Fugen is an active volcano of southern Japan.

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  3. john in coastal Nova Scotia21 January 2015 at 01:13

    In June 1981 I received a good smattering of those plants from the late Matt Nosal of Holly Heath Nursery on Long Island, NY. What marvelous plants they are! The pure kiusianums have never failed here in Nova Scotia. The hybrids - though labelled as kiusianums - were prone to bark-split as young rooted cuttings but they gradually improved. R. kisuianum 'Fugen-no tsuki' as I recall is one of the taller ones, about chin height the last time I looked. Thanks so much for the link.

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  4. I like your article, your post very nice , thanks for your share

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