关于兰科盆距兰属与囊唇兰属的混淆问题

回顾盆距兰属(Gastrochilus)与囊唇兰属(Saccolabium)两个混淆属的简史。它们为彼此明显不同的独立属。盆距兰属的唇瓣为半球形囊状,侧裂片不明显,中裂片甚大;蕊柱无足;花粉团具孔隙。囊唇兰属的唇瓣为圆筒状距形,侧裂片明显,中裂片很小;蕊柱有短足;花粉团实心。前者广泛分布于亚洲热带与亚热带地区;后者则只局限于印度尼西亚的爪哇与苏门答腊。因此,建议在国际命名法规中取消保留名Saccolabium以及作为其异名的废弃名Gastrochilus(1822号)。

Notes on Two Confused Genera:Gastrochilus and Saccolabium (Orchidaceae)

Taxonomic history of two confused genera, Gastrochilus and Saccolabium, is briefly reviewed. It is concluded that they are distinct from each other. In Gastrochilus the lip is semiglobose-saccate with indistinct side-lobes and a much larger mid-lobe, the column is footless and the pollinia are porate, while in Saccolabium the lip is cylindrical-spurred with indistinct side-lobes and a small mid-lobe, the column has a short foot and the pollinia are solid. The former is widely distributed in tropical and subtropical Asia and the latter is restricted to Java and Sumatra of Indonesia. As a result, a proposal is made to modify the conserved name Saccolabium and to exclude the previously listed synonym or rejected name Gastrochilus in the International Code of Botanical Nomenclature (No. 1822.).