1.无毛的,光滑的
1.smooth and lacking hairs or bristles
1.Staminodes of same color as sepals, not black-brown, glabrous, distinctly differentiated into a claw and an expanded limb.
退化雄蕊与萼片相同颜色，不黑棕色，无毛，清楚分化成一瓣爪和一膨大的瓣片。
2.Twigs somewhat compressed, glabrous and pink when young, interpetiolar scars not always continuous.
小枝有点的压扁，幼时无毛和粉红色，叶柄间的痕不总是连续。
3.Stems erect, branched above, sparsely to densely pubescent at least near base, usually glabrous above.
茎直立，上面分枝，疏生与密被短柔毛的至少近基部，通常无毛在上面。
4.Bud-scales glabrous on outer surface; corolla white; young shoots glabrous or with a few short glandular hairs only.
在外表面上无毛的芽鳞；花冠白色仅幼枝无毛的或具一些短腺毛。
5.Corolla pale yellow, tube distinctly enlarged and turned into a rounded curve; filaments glabrous.
花冠浅黄，清楚地扩大的筒部并且使成为一转向另一方面的曲线；花丝无毛。
6.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。
7.Stems many from base, ascending or subject, rarely prostrate, ca. 1 mm thick, usually glabrous, rarely with a few hairs when young.
茎很多基生，上升或近直立的，很少平卧，粗约1毫米，通常无毛，幼时很少具少数毛。
8.filaments glabrous; anther locules connate, slightly pergent proximally, ellipsoid, longitudinally dehiscent.
花丝无毛合生的药室，分叉下部，椭圆形的稍，纵向开裂。
9.Receptacle glabrous, rarely with a few hairs; achenes glabrous.
花托无毛，很少具一些毛；瘦果无毛。
10.Leaves decussate, leathery, glabrous, with a conspicuous marginal vein and numerous, straight lateral veins.
交互对生，革质的叶，，具明显边缘脉和多数，直侧脉。