台灣蕁麻科新紀錄種——稀齒樓梯草

Elatostema cuneatum Wight (Urticaceae), a newly recorded species from Taiwan

本文報導台灣蕁麻科（Urticaceae）新紀錄種-稀齒樓梯草（Elatostema cuneatum Wight）。稀齒樓梯草與其他樓梯草不同於擁有對應季節性乾旱的一年生生活型。本種特徵為矮小的植株型、數量稀少的雄花、近光滑的花序苞片以及雌花的柱頭頂端有1-2根毛狀物。本文提供台灣產稀齒樓梯草詳細的繪圖、相片與描述。

Elatostema cuneatum Wight (Urticaceae) is reported for the first time in Taiwan. This species is different from other Elatostema species in having an annual habit corresponding to seasonal drought, and can be distinguished by its dwarf plant size, the rarity of male flowers compared to female flowers, subglabrous bracts of inflorescences and 1-2 haired apex of stigma. Detailed illustration, pictures and descriptions of E. cuneatum in Taiwan are provided in this study.