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- Twigs densely puberulous, glabrescent. 小枝密被微柔毛，后脱落。
- Stems very slender, glabrate or appressed strigose. 茎非常纤细，脱毛的或贴伏糙伏毛。
- Stems obtusely 4-sided, appressed densely setose, glabrescent. 茎钝的4棱，贴伏的密被刚毛，后脱落。
- Twigs ?terete, pubescent, later glabrescent and cinereous. 小枝圆柱状，青春期，后脱落的和灰色。
- Leaves papery. Flowers white. Ovary soon glabrescent. 叶纸质。花白色不久的子房后脱落。
- Abaxial surface of calyx tomentose when young, glabrescent. 背面花萼被绒毛幼时，后脱落。
- Herbs, 30-40 cm tall, white lanuginous or glabrescent. 草本，30-40厘米高，白色的被绒毛的或后脱落。
- Stem 22--30 cm tall, retrorsely puberulent or glabrescent, simple. 茎22-30厘米高，反曲的被微柔毛或脱落无毛，单。
- Stems to 35 cm tall, unbranched, fine bristly, glabrescent. 35厘米高的茎可达，不分枝，罚具刚毛款，。
- Calyx with 5 teeth, white tomentose when young, glabrescent. 花萼与一起5切成齿形，白色幼时，后脱落。
- Stems 15-60 cm, basally glabrescent, densely brown woolly. 茎15-60厘米，基部后脱落，浓密棕色具绵状毛。
- Buds russet, long ovoid or oblong, at first pilose, glabrescent. 芽赤褐色，或长圆形，最初具柔毛的长卵球形，后脱落。
- Branchlets sparsely villous to glabrate, rarely glabrous. 小枝疏生长柔毛到脱毛，很少无毛。
- Shrubs parasitic, glabrous or with stellate hairs and glabrescent. 灌木寄生，无毛的或具星状毛和后脱落。
- Bark furrowed, exfoliating when old. Leaf blade glabrescent along veins. 树皮棱槽，剥落老时。叶片后脱落沿脉。
- Stems glabrescent or very sparsely retrorse-hirtellous. Fl. Jun-Sep. 茎后脱落或非常稀少的反折具微糙硬毛。花期6月9月。
- Young branches glabrescent, older growth drying gray-brown, lenticellate. 幼枝后脱落，老枝干燥灰棕色，具皮孔。
- Flowers white, 3.5-5 mm.Pedicel 2.5-3.5 mm, glandular granulose, glabrescent. 花白色，2.;5-3
- Stamens 4-5 mm, anther connective appendage glabrous or glabrescent. 雄蕊4-5毫米，花药药隔附属物无毛或脱落无毛。
