He drew attention also to certain structural similarities between Cycas and ginkgo.
Most of the ginkgo trees are males, but one may graft any number of males with bearing female scions.
ginkgo biloba, which may reach a height of over 30 metres, forms a tree of pyramidal shape with a smooth grey bark.
An ally of theirs, the ginkgo or Maidenhair tree, seems to have been extremely common in certain geological periods.
The Japanese ginkgo, or maidenhair fern tree, is an old-fashioned conifer somewhat like those first examples of this family.
In the same way we thought at first that a llama was a Chinese ginkgo.
Leaf impressions of ginkgo are found in rocks of nearly all ages back even to the Upper Palæozoic.
To him is credited the introduction of the ginkgo tree and the Lombardy poplar to America.
The Bigtree group (Sequoia p. 47) was a companion of the ginkgo in its flourishing period.
This is not the place to discuss in detail the past history of ginkgo (see Palaeobotany: Mesozoic).
1773, from Japanese ginkyo, from Chinese yin-hing, from yin "silver" + hing "apricot" (Sino-Japanese kyo). Introduced to New World 1784 by William Hamilton in his garden near Philadelphia.
|ginkgo also gingko |
A deciduous, dioecious tree (Ginkgo biloba) which is the sole surviving member of the Ginkgoales, an order of gymnosperms that was extremely widespread in the Mesozoic era. It belongs to a genus which has changed very little since the end of the Jurassic period. The tree, a native of China, has fan-shaped leaves and fleshy yellowish seeds containing a edible kernel. Ginkgoes are often grown as ornamental street trees.