Asystasia gangetica subsp. micrantha

小花寬葉馬偕花

naturalized

Asystasia gangetica (L.) T. Anderson subsp. micrantha (Nees) Ensermu

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

名彙資訊

學名發表文獻

Ensermu. 1994. Proceedings of the XIIIth Plenary Meeting of AETFAT, Zomba, Malawi 1: 343. (Proc. XIII Plen. Meet. AETFAT Zomba Malawi)

台灣首次記錄發表文獻

Hsu, Chiang & Peng. 2005. Taiwania 50(2): 118.

異名

Asystasia gangetica (L.) Anderson

Chen. 2008. Naturalized plants of eastern Taiwan 42. (Nat. Pl. East. Taiwan)

各語言俗名

中

小花寬葉馬偕花、十萬錯花、熱帶報春花

參考文獻

Wu, Yang, Teng, Chang, Yang and Hsieh. 2010. Taiwania 55(2): 145.
Shih-Huei Chen. 2008. Naturalized plants of eastern Taiwan. (Nat. Pl. East. Taiwan)

特徵描述

生活型

herb

形態特徵

Herbs perennial, erect, 15 to 60 cm tall, basal stems procumbent, stems square with scattered hairs.
Leaves opposite, ovate, 4-9 cm long, 2-5 cm wide, obtuse at apex, acute to round at base, entire, the lateral nerves 5-8-paired.
Inflorescences terminal racemes, often unilateral; bracts 3, deltoid, minute; calyx lobes 5, linear, 4-5 mm long, about 1 mm wide, setaceous; corolla zygomorphic, about 1.0-1.3 cm in diameter, white, bell-shaped, corolla-tube 1.5-2.0 cm long, straight, narrow, the throat campanulate, the limb lobes 5, lobes near orbicular, 4 mm in diameter, under one has purple blotches inside; stamens 4, didynamous, included, filament 3-5 mm long; anthers 2-loculate; style 2.5 mm long; ovary with 2 ovules per locule.
Capsule club-shaped, 2.0-2.5 cm long, 4 mm diameter, distinctly stipitate, pubescent, enclosed in persisent calyx; seeds 2-4, about 3 mm in diameter, compressed orbicular.

分布

世界 : native in Africa, India and Sri Lanka. The introduction of this weed has caused serious disturbance to natural habitats, particularly in Malaysia, Indonesia and the Pacific islands.

引證標本

Tainan Co.: Baihe Town, Kuanziling, Hongye Park, meadow, locally abundant, Jan. 26, 2005, T. W. Hsu & J. J. Peng 11756 (TESRI, Taiwan Endemic Species Research Institute).