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齒葉南芥(十字花科),臺灣新記錄之高山植物

Arabis serrata Franch. et Sav. (Brassicaceae), a Newly Recorded Alpine Plant in Taiwan

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摘要


本文記載生長於臺灣中、北部高山稜線附近,岩碎地之高山植物-齒葉南芥(Arab is serrata Franch. Et Sav.),屬於十字花科(Brassicaceae),為臺灣新記錄。本種植物之識別特徵為:多年生無莖草本,蓮座狀,花枝叢生,高10-20公分;基生葉倒長卵形,邊緣有鋸齒,質地厚;莖生葉橢圓形至卵形,基部耳狀抱莖,可達3公分長;長角果直,可達5公分長,扁平,寬約0.12公分;種子具環翅,頂端處驟寬。本文並提出臺灣產筷子芥屬檢索表。

並列摘要


Arabis serrata Franch et Sav. (Brassicaceae) an alpine plant not previously recorded from Taiwan, is here reported. It occurs on scree slopes on mountain ridges above 3,000m in northern and central Taiwan. Diagnostic characters of this species include a perennial, acaulescent, rosulate habit fasciculate scapes ca. 10-20cm high; thick simple, elongate-obovate basal leaves with serrate margins; elliptic to ovate, auriculate-clasping cauline leaves to 3cm long; straight, flat siliques to 5cm long, 0.12cm wide; and seeds with ringed wings abruptly broadened at apex. A key to Arabis species in Taiwan is provided in Chinese.

並列關鍵字

Arabis serrata Brassicaceae Cruciferae new record alpine plant Taiwan taxonomy

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