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Remarks on the Species of Spermacoceae (Rubiaceae) of Taiwan

臺灣茜草科鴨舌癀舅族植物之分類訂正

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摘要


This paper presents a brief revision of all six species of Spermacoceae (Rubiaceae) in Taiwan. Artificial keys to the genera and species, species illustrations, and SEM micrographs of seed surface of Spermacoce, in addition to other relevant information, are provided. Spermacoce assurgens Ruiz & Pavon is here reported for the first time from Taiwan.

並列摘要


茜草科鴨舌癀舅族(Spermacoceae)在臺灣計有3屬6種,其中以鴨舌癀舅屬(Spermacoce G. F. W. Meyer)的分類最爲混亂。溯自Henry(1896)和Sasaki(1928)記載長葉鴨舌癀(S. stricta L. f.,或Borreria stricta(L. f.)Meyer)産於本島,學者多沿用之,且視此種爲本島稀有植物。本文指出上述二作者之證據標本皆爲涼喉茶屬(Hedyotis L.)植物之誤訂,長葉鴨舌癀實不産於臺灣。另蔓鴨舌癀舅(S. mauritiana Gideon)被誤訂爲小破得力(B. leavis(Lam.)Griseb.)。在標本鑑定上鴨舌癀舅屬和擬鴨舌癀屬(Richardia L.)亦多混淆。本文扼要整理本島鴨舌癀舅族植物,並提供檢索表以區別各屬種,報導一新記錄種-光葉鴨舌癀舅(S. assurgens Ruiz&Pavon),另以掃描電子顯微鏡研究鴨舌癀舅屬植物之種子形態。

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