博白油茶和红皮糙果茶分类学问题的讨论

通过对由原产地引种的博白油茶 (Camellia gigantocarpa Hu et Huang)和红皮糙果茶 (C.crapnel-liana Tutcher)成长植株的形态、花、果实以及馆藏相关标本的详细比较和观察 ,认为这两个种存在着显著的差异 :博白油茶树皮被灰绿色的粉末 ,红皮糙果茶树皮被砖红色的粉末 ;博白油茶侧脉 9～ 1 0对 ,叶缘具细锯齿 ,叶下偶见微毛 ;红皮糙果茶的侧脉 7～ 8对 ,叶缘具浅细圆齿 ,叶下永远无毛 ;博白油茶花瓣数目 6～ 7枚 ,为倒卵形到宽倒卵形 ,花瓣基部连生仅 2 mm;红皮糙果茶花瓣数目常为 8～ 9枚 ,甚至更多 ,为倒卵形到窄倒卵形 ,花瓣基部连生达 4 mm;博白油茶的雄蕊花丝基部连生仅 2 mm;红皮糙果茶的雄蕊花丝基部连生达 5～6 mm。因而应该将博白油茶 (C. gigantocarpa Hu et Huang)看作一个独立的种。

A taxonomic discussion on Camellia gigantocarpa and Camellia crapnelliana

Having carefully observed the shapes,flowers,fruits of live cultivated plants of C. gigantocarpa Hu et Huang and C. crapnelliana Tutcher,which were planted from seeds of original area,and examined the relevant specimens collected in herbariums,the authors think there are distinct differences between the two species as following:the bark of C. gigantocarpa is grey-green and C. crapnelliana is brick-red; C. gigantocarpa with lateral nerves 9～10 pairs and mucronulate-serrulate,occasionally with thinner pubescence beneath leaves and C. crapnellianawith lateral nerves 7～8 pairs and shallow-crenate,always glabrous beneath leaves;C. crapnelliana with 6～7,obovate to wide obovate,united at the base about 2～3 mm, C. crapnelliana with usual petals 8～9,even trended more,obovate to narrowly obovate,united at the base about 4 mm;filaments of C. gigantocarpa united only to 2 mm and C. crapnelliana united up to 5～6 mm at the base. So C. gigantocarpa should be looked upon as an independent species.