Metagentiana, a New Genus of Gentianaceae

龍膽科一新屬：狹蕊龍膽屬

何廷農(Ting-Nong Ho) ； 陳世龍(Shi-Long Chen) ； 劉尚武(Shang-Wu Liu)

《Botanical Bulletin of Academia Sinica》 43卷1期 (2002/01) Pp. 83-91

https://doi.org/10.7016/BBAS.200201.0083

摘要

外部形態學、花部解剖學、細胞學、花粉形態和胚胎學的綜合分析結果表明龍膽屬狹蕊組在該屬內非常特殊，正如不同於其他屬、如變蝴蝶屬(Tripterospermum)和蔓龍膽屬(Crawfurdia)一樣不同於該屬其他組，故狹蕊組應從龍膽屬內分離出去作爲一個獨立的屬。我們把它命名爲狹蕊龍膽屬(Metagentiana).新屬與雙蝴蝶屬(Tripterospermum)和蔓龍膽屬(Crawfurdia)的親緣關係最近，三者構成了一個單系群而成爲龍膽屬的姐妹群。另外，本文還進行了14個種的新組合。

關鍵字

狹蕊龍膽屬 ； 龍膽屬 ； 龍膽科 ； 新屬 ； 分類學

並列摘要

The evidence from gross morphology, floral anatomy, chromosomes, palynology, and embryology all indicates that sect. Steno gyne is discordant within the genus Gentiana and is as distinct from the other sections of Gentiana as are other genera, such as Tripterospermum and Crawfurdia. In light of these characters, sect. Stenogyne is removed from Gentiana and given generic rank as the new genus Metagentiana. It is more related to Tripterospermum and Crawfurdia than to Gentiana, though it is more primitive than the first two genera. Together with Tripterospermum and Crawfurdia the new genus forms a monophyletic group, which is the sister group to the genus Gentiana. Fourteen new combinations required at specific rank are proposed.

並列關鍵字

Gentiana ； Gentianaceae ； Metagentiana ； New Genus ； Taxonomy