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Shiro TSUYUZAKI
Plant community ecology / Environmental conservation

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

(First update on October 5 2010. Last on May 29 2011)

Gingko / Maidenhair tree
Ginkgo biloba L. [Ginkgoaceae]

This family has one genus and one species in the world.

Icho (イチョウ, 銀杏/公孫樹)

Life form: deciduous tree
Distribution: originally in China (transplanted to verious regions where mean annual temperature range 0 to 20°C and annual precipitation is from 500 mm to 2000 mm)

Varieties

Ginkgo biloba L. (イチョウ)

- var. epiphylla Makino (オハツキイチョウ)
- var. laciniata Hort. (キレハイチョウ)
- var. pendula Hort. (シダレイチョウ)
- var. variegata Henry (フイリイチョウ)


Ginkgo biloba in Hokkaido

ST ST
ST ST
[Top/Left] a streed made by G. biloba. [Top/Right] shoots. [Bottom/Left] bark (and sprouts). [Bottom/Right] close-up of leaf. [T/L, T/R and B/L] at Icho Street (N12) in the campus of Hokkaido University on September 10 2010. [B/R] at an arboretum in Teshio Experimental Forset, HU, on September 13 2010.


Morphology of Ginkgo biloba

ST
Fig. 1. female flower, 2. female flower (partial), 3. male flower, 4. leaf

ST Fig. 2. Reproductive organs and tissues on G. biloba

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ST
ST
On June 7 1983 (by ST).


References

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