仙人掌Z.C.Lu，Y.F.Lu&X.F.Jin,广西石灰岩地区的一个新物种，中国,被发现和描述。形态表明，断头蛇与calcicola相似，但不同的是有茎的中心，叶片3-5.5毫米宽，苞片长于穗状花序，utricles4-5毫米长，更短，和小坚果在先端突然收缩成直立喙。为新物种和相关物种提供了小粒和小粒的SEM显微照片，C.calcicola.
Carexduanensis Z.C.Lu, Y.F.Lu & X.F.Jin, a new species in limestone areas of Guangxi, China, was discovered and described. The morphology showed that C.duanensis is similar to C.calcicola, but differs in having culms central, leaf blades 3-5.5 mm wide, bracts longer than spikes, utricles 4-5 mm long, shorter, and nutlets abruptly contracted into an erect beak at apex. SEM microphotographs of utricles and nutlets are provided for the new and related species, C.calcicola.
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