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西藏勾儿茶属一新种

     

摘要

@@墨脱勾儿茶 新种 图1rn  Berchemia mêdogensis Y. L. Chen et Y. F. Du, sp. Nov. Fig. 1rn  Haec species habitu B. Flavescenti (Wall.) Brongn. Montium Him alayae similis, sed a qua ramulis, petiolis, foliis subtus et rhachibus inflorescentiae puberulis facile differt.rn  Frutex scandens; ramuli teretes, virides vel flavo-viridescentes brunneo -puberuli; gemmae axillae ovoideae, 2~2.5 mm longae, ciliatae. Folia papyracea , ovatavel ovato-elliptica, 4.5~8 cm longa, 3~5.5 cm lata, apice obtusa, mucronulata, basi rotundatavel subcordata, supra viridia, glabra, subtus cinereo-viridescentia, albo-puberula, nervis lateralibus 10~13-jugis, costaetnervis laterali bus prominentibus, adnervos dense puberula; petioli 1.5~2 cm longi, puberuli; stipulae minutae, triangulatae, persistentes. Inflorescentia terminalis late cymo-pani culata, usquead 18 cm longa, ramis inferioribus lateralibus ad 10 cm longis, rhachibus inflorescentiae puberulis. Fructus cylindrico-ellipsoideus, 7~12 mm longus, 4~6 mm crassus, apice mucronulatus, deciduus, basi disco disciformi et calyce persistente circumcinctus, maturitate ruber, deinde purpureo-nigrescens, pedicello 2~4 mm longo, puberulo.

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