Homepage | Favorite | Contact
POWDER
HERBS
POWDER
TEA
TEA-CUT
SEEDS
Ginkgo leaves

发布日期:[2010-3-23]          点击次数:2488          作者:Sichuan Onward

The leaves are unique among seed plants, being fan-shaped with veins radiating out into the leaf blade, sometimes bifurcating (splitting) but never anastomosing to form a network. Two veins enter the leaf blade at the base and fork repeatedly in two; this is known as dichotomous venation. The leaves are usually 5–10 cm (2-4 inches), but sometimes up to 15 cm (6 inches) long. The old popular name "Maidenhair tree" is because the leaves resemble some of the pinnae of the Maidenhair fern Adiantum capillus-veneris.

Leaves of long shoots are usually notched or lobed, but only from the outer surface, between the veins. They are borne both on the more rapidly-growing branch tips, where they are alternate and spaced out, and also on the short, stubby spur shoots, where they are clustered at the tips.


Copyright (C)Sichuan Onward International Trade Co., Ltd. Record Tel :028-86533226   技术支持:纵横天下