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单词 Palmately
释义

Palmately

英语例句库

Leaves alternate, shortly petiolate, leathery, margin entire, venation pinnate or palmately triplinerved.

叶互生,具叶柄短,革质,边缘全缘,羽状脉或者掌状离基三出脉的。

Leaves basal and cauline, alternate, rarely opposite or whorled, simple or variously compound, palmately nerved, rarely penninerved, with or without stipules.

叶基生和茎生,互生,很少对生或者轮生,单叶或者复叶,掌状叶脉,很少羽状脉,有或无托叶。

英语百科

Leaf shape

Chart illustrating leaf morphology terms
Oddly pinnate, pinnatifid leaves (Apium graveolens, celery)
Perfoliate bracts completely surrounding the plant stem (Lonicera sempervirens)
Partial chlorosis revealing palmate venation in simple leaves of Hibiscus mutabilis

In botany, leaf shape is a description of the form of the part of a plant known as the leaf. Leaf shape is a component of plant morphology used in the description and taxonomy of plants. being one of the more visible features, leaf shape is commonly used for plant identification. leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets), have a regular or irregular border, be smooth or bearing hair, bristles or spines. In compound leaves, the arrangement and form of the edges of the leaflets determine the overall leaf shape, as well as the arrangement of the veins.

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更新时间:2025/6/17 4:37:23