Other maple genus: Dipteronia sinensis and Dipteronia dyeriana

[mjh1676]

Here is a link a gardenweb thread that I found interesting. I thought someone here, especially within the UBC, might have some comment. I myself have nothing in particular to add, as I know nothing about the subject.

http://forums.gardenweb.com/forums/l...000923781.html

MJH

[Daniel Mosquin]

UBCBG has a Dipteronia sinensis sourced via Hillier Nurseries, although I note that its family name hasn't been updated yet to Sapindaceae (plants from Acer have). I imagine that will occur whenever that area of the garden is next inventoried, if it hasn't been done in the months since that database was put on the web.

[mendocinomaples]

I was fortunate to view the interesting plant Dipteronia sinensis at Quarryhill Arboretum at Sonoma, CA this past spring. With only a casual glance one would think it was a negundo or henryi.

Quarryhill Botanical Garden is a non-profit
botanical garden dedicated to advancing the conservation, study, and cultivation of
the temperate Flora of Asia. It is a very interesting place to visit. Their collection is at the most only 15 years old, so plants are very young. It will be a spectacular place to visit in 15 years!

Their website hosts a very useful Database of Asian Plants in Cultivation. It allows you to find Arboretums throughout the US that have a particular plant.




http://www.calacademy.org/research/b...hill/index.asp

[mr.shep]

When I saw the photo from Esveld a light bulb when
off in my head. I knew I had seen this tree before
and then figured out where I had seen it. I never
knew it by species name but I did know it by the
genus. Don Kleim had this tree in his backyard
for years, longer than the 24 years that I knew him.
His tree also came from England.

Let's show what the sinensis form looks like to
others.

http://www.esveld.nl/htmldiaen/d/disine.htm

http://www.asianflora.com/Aceraceae/...a-sinensis.htm

Have not seen a good photo of dyerana. As we can see
from here there is a Taipei variety.

http://flora.huh.harvard.edu/china/m...oauthoring.htm

Then there is this

http://www.evolvingearth.org/paleoco...ph_match=MB306

with an excellent botanical overview here.

http://www.amjbot.org/cgi/content/full/88/7/1316

Jim

[Ron B]

A retired extension agent near Seattle has a nice one as well. Do not have the dimensions written down, but it is large in all aspects (for this species), including trunk and crown spread.

The Quarryhill database does not seem to have any of those out here.

[Michael F]

The UK champion Dipteronia sinensis is 10m tall and 27cm trunk diameter, if that's any useful comparison

[Ron B]

The one in Kent, WA was measured by Robert Van Pelt, who I saw today. Without checking his records he said it was something like 35' x 4'11" x 35'. Sounds about right. Also: one in Herefordshire was 37' x 3'0" in 1969.

The Quarryhill database record would be more impressive if it had ones from Seattle collections (Washington Park Arboretum, for starters) and other places besides Quarryhill and Morton.

[mr.shep]

The Quarryhill database record would be more impressive
if it had ones from Seattle collections (Washington Park
Arboretum, for starters) and other places besides Quarryhill
and Morton.

Valid point and perhaps in time there will a branching out
and a merging of information so they can include a wide
range of plant material in various arboretums and known
collections. They have some backtracking to do in the
interim. Even some of their links are broken at the
moment.

Most of the people I know with private collections are not
going to tell them what they have. Even Strybing did not
know what all was in the Noble collection at Golden Gate
Park. Hillier in England had a complete list of the original
plants. Don Kleim got his list from Hillier. That list came
in real handy when we had to go through what was left of
the dwarf Conifers years ago in order to place the name tags
well actually name plates, on the right plant. Some plants
in the collection were not supposed to have a "name tag"
also.

Jim

[Ron B]

I was talking about public or publicly accessible collections, thus the Seattle arboretum being given as an example.