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- Current year branchlets terete; leaf blade oblong, 9-12 cm, base rounded, apex acute. 当年小枝圆柱状;叶片长圆形,9-12厘米,基部圆形,先端锐尖。
- Current year branchlets terete or 2- or 4-ribbed. Anthers not locellate. Ovary glabrous, with 5-10 or rarely more ovules per locule; style 0.5-4 mm. 当年小枝圆柱状的或2-或4肋。花药不具分格;子房无毛,具或很少更多胚珠每室;花柱0.;5-4毫米
- Current year branchlets slender, terete; leaf blade thinly leathery, abaxially pale green; sepals glabrous. 当年小枝纤细,圆柱状;叶片薄革质,背面的苍绿色;萼片无毛。
- Current year branchlets 4-ribbed; sepal margins not ciliolate. 当年小枝4肋;萼片边缘不具短缘毛。
- Current year branchlets, midvein of leaf blade abaxial surface, and petioles villous. 当年小枝,背面叶片中脉,以及叶柄具长柔毛。
- Anthers not locellate; current year branchlets pubescent when young, soon glabrescent; leaf blade abaxially glabrous. 花药不具分格当年小枝幼时具短柔毛,不久后脱落;叶片背面无毛。
- Current year branchlets spreading hirsute; leaf blade elliptic to ovate-oblong, 2-5.5 cm; petals white; ovary tomentose. 当年小枝平展的具粗毛;叶片椭圆形到卵状长圆形,2-5.;5厘米;花瓣白色子房被绒毛。
- Current year branchlets, winter buds, petioles, pedicels, bracteoles, and sepals densely villous. Bracteoles and sepals oblong. Fl. Jul. 当年小枝,冬芽,叶柄,花梗,小苞片,以及萼片密被长柔毛。小苞片和萼片长圆形。花期7月
- Current year branchlets 2-ribbed; leaf blade narrowly elliptic to suboblong, 3-7 cm, base cuneate, apex slightly obtuse. 当年小枝2肋;近长圆形的叶片狭椭圆形到,3-7厘米,基部楔形,先端稍钝。
- Current year branchlets white pubescent; leaf blade 5-14 cm; sepals outside glabrous or sparsely pubescent, inside densely sericeous. 当年小枝白色短柔毛;叶片5-14厘米;萼片外面无毛或疏生短柔毛,里面密被被绢毛。
- Current year branchlets stout, 2-ribbed; leaf blade thickly leathery, abaxially reddish brown when dry; sepals pubescent. 当年小枝粗壮,2肋;干燥时的叶片厚革质,背面的红棕色;萼片短柔毛。
- Current year branchlets yellowish brown; leaf blade abaxially hirtellous near base especially along midvein but glabrescent, adaxially glabrous. 叶片椭圆形,倒卵状椭圆形,长圆状椭圆形,或长圆形,无毛的或具微糙硬毛的近基部特别是沿中脉(4
- Current year branchlets pubescent but glabrescent; leaf blade abaxially pubescent at least when young, apex acute to shortly acuminate and with an obtuse tip. 当年小枝短柔毛但是后脱落;幼时的至少的叶片背面短柔毛,先端锐尖到短渐尖和具一钝的端部。
- Branchlets terete;tendrils trifurcate. 小枝圆柱状卷须三叉。
- 45(44) Current year branchlets 2-ribbed; sepal margins ciliolate. 当年小枝2肋;萼片边缘具短缘毛。
- Branchlets terete;bark white, peeled off into fragments when old. 小枝圆柱状树皮白色,脱皮进碎片老时。
- Branchlets terete or obtusely ridged, slender, pendulous. 小枝圆柱状或者钝使成脊状,细长,下垂。
- 3(2) Current year branchlets and petioles spreading villous; capsule pericarp furfuraceous. 当年小枝和叶柄开展长柔毛;蒴果果皮软鳞片状。