Geranium dissectum L. (Geraniaceae), a Newly Naturalized Plant in Taiwan

臺灣新歸化牻牛兒苗科植物－刻葉老鸛草

陳志雄(Chih-Hsiung Chen) ； 王秋美(Chiu-Mei Wang)

《Collection and Research》 32期 (2019/12) Pp. 57-61

https://doi.org/10.6693/CAR.201912_(32).0005

摘要

Geranium dissectum L., an annual or biennial herb native to eastern Mediterranean areas, was recently discovered to have been naturalized in Taiwan. We found this weed from low-elevation areas to high-mountain regions. This species is most similar to G. carolinianum, but differs from the latter by its narrower leaf-lobes of the upper leaves, petals purplish-red (vs. light-pink), and glandular hairs (vs. hairs) on the fruit. This study provides a taxonomic description and illustrations. Photographs and a key to the Taiwanese taxa are also provided in this study.

關鍵字

Geraniaceae ； Geranium dissectum ； naturalized plant ； Taiwan

並列摘要

主要原產於歐洲牻牛兒苗科植物－刻葉老鸛草（Geranium dissectum L.），新歸化於臺灣中部以北的低海拔至高海拔山區。與另一原本就歸化於台灣山區的野老鸛草（G. carolinianum L.）之型態類似，但本新紀錄植物具上半部葉裂片較窄、紫紅色的花瓣，以及果實上具腺毛的特徵可與之區分。本文提供分類特徵描述，手繪圖，照片與檢索表以利鑑定。

並列關鍵字

牻牛兒苗科 ； 刻葉老鸛草 ； 歸化植物 ； 臺灣