phyllotaxis

/fil-uh-tak-sis/US // ˌfɪl əˈtæk sɪs //UK // (ˌfɪləˈtæksɪs) //

植树节,植树造林,植树造林术,叶子轴

Definitions

n.名词 noun

1
plural phyl·lo·tax·es [fil-uh-tak-seez]. /ˌfɪl əˈtæk siz/. Botany.
- : phyllotaxy.

The angle of divergence may alter either abruptly or gradually, and the phyllotaxis thus becomes very complicated.
In different species of the same genus the phyllotaxis frequently varies.
Leaves occupy various positions on the stem and branches, Phyllotaxis.
Four quadrangular scales in mutual contact represent the condition of definite phyllotaxis.
Such are the majority of the scales of the cone and represent more or less indefinite conditions of phyllotaxis.