Abstract

The genus Clinopodium of Taiwan is revised on the basis of morphological and anatomical characters, and the chromosome numbers. Three species and one new variety are recognized, i.e. C. gracile (Benth.) O. Kuntze, C. chinense (Benth.) O. Kuntze, C.laxiflorum (Hayata) Mori, and C. laxiflorum (Hayata) Mori var. taiwanianum Hsieh & Huang, var. nov. The species, C. gracile differs conspicuously from the others in having one vascular bundle in petiole; minute bract is shorter than the pedicel; the nutlet containing discoid surface; and the chromosome number being 2n= 18; while the others have two vascular bundles in petiole; the bract is longer than the pedicel; the nutlet surface is ornamented with shallow and well defined ridges; and the chromosome number is 2n= 38.

中文摘要

採用外部形態、 解剖、花粉、染色體、地理分布、生態條件及同功酉每 等特徵研究省產風輪菜屬植物後，可將省產本屬植物分為4個分類群，包括3種1變種。分別為光風輪（Clinopodium gracile (Benth.) O. Kuntze）、風輪菜（C. chinense (Benth.) O. Kuntze）、疏花風輪菜（C. laxiflorum (Hayata) Mori）和台灣風輪菜（C. laxiflorum (Hayata) Mori var. taiwanianum Hsieh & Huang, var. nov.）。光風輪和其他種類有明顯的不同，前者葉柄具1條維管束，苞片遠短於花梗，小堅果表面具盤狀突起，染色體數目2n＝18；而後者葉柄具2條維管束，苞片長於花梗，小堅果表面具方格狀突起，染色體數目2n＝38。顯示兩大植物群的差異非常大。 關鍵字：訂正，風輪菜屬，臺灣。

Keyword: Revision, Clinopodium, Taiwan.