1.【植】叶的中脉
1.the thick central vein that runs from the base of a leaf to its apex
1.Abaxial leaf surface pubescent, at least along midrib; style glabrous.
叶背面短柔毛，至少沿中脉；花柱无毛。
2.Cut or lobed to, essentially to the base or to the midrib.
分或裂至叶基或中脉。
3.Branches usually flattened, leaflike, with a stout midrib, soft, spineless.
通常扁平，叶状的分枝，具一粗壮中脉，柔软，无刺。
4.adaxial surface sparsely or densely scaly, scales unequal, often absent by maturity, hairs usually absent, rarely pubescent along midrib.
正面稀少的或者密被鳞片，鳞片不等，通常成熟时无，毛通常无，很少沿中脉具短柔毛。
5.midrib conspicuously raised, lateral veins inconspicuous, concave or obscure.
中脉显著提高，侧脉不显眼，凹的或不明显。
6.endocarp globose, slightly oblique, convex, with conspicuous, scattered netlike strips, midrib projecting.
球状的内果皮，稍偏斜，凸，带有显眼，散布的网状脱落，中脉凸出。
7.Leaf blade with both surfaces glabrous except for glandular-setose base of midrib, abaxial surface smooth to rugose.
除了具腺具刚毛的中脉基部的叶片具两面无毛，对具皱纹背面平滑。
8.Leaf bud scales persistent; ovary, calyx, corolla tube, capsule, and midrib on abaxial leaf surface setose.
叶芽鳞宿存；在具刚毛叶背面上的子房，花萼，花冠筒，蒴果和中脉。
9.branches usually flattened and leaflike, or 3-winged, with stout midrib, margins crenate, coarsely serrate, or lacerate, sometimes horny.
枝通常扁平和叶状的，或具3翅，具坚固的中脉，边缘具圆齿，有粗锯齿的，或撕裂状，有时有角的。
10.base cuneate, truncate, or subcordate, margin irregularly serrate and sometimes double serrate, apex acute, midrib concave.
基部楔形，截形，或近心形，和有时重锯齿，先端锐尖的边缘不规则有锯齿，凹的中脉。