Corchorus olitorius

山麻

naturalized

Corchorus olitorius L.

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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L., Species Plantarum 1: 529. 1753. (Sp. Pl.)

Masam., A list of vascular plants of Taiwan 80. 1954. (List Vasc. Taiwan, 台灣植物目錄)

無

Wu, Yang, Teng, Chang, Yang and Hsieh, Taiwania 55(2): 155. 2010.
Chen, The Invasive Alien Plant in Miaoli 272. 2006. (Invas. Al. Pl. Miaoli, 苗栗地區重要外來入侵植物圖鑑)
Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan, 台灣植物名彙)

shrub

An undershrub, 1–1.5 m high, glabrous or nearly so, much branched stems greyish-green, partially red, 2-divergent at 2/3 of height.
Leaves membranaceous, ovate or oblong-lanceolate, 1.5–10.5 cm long, 1.25–5.5 cm wide, slightly oblique, rounded or acuminate-caudate at apex, rounded at base, dentate bitailed, 3–5-nerved, glabrescent on both surfaces; petioles 0.5–5.5 cm long, pubescent above at apex, otherwise glabrous; stipules 2, subulate, 0.6–1.1 cm long.
Flowers 6 mm long, oppositifolious, 2 in pairs; peduncles very short; pedicels short, 1 mm long; bracteoles few, 1–2.5 cm long; buds green, obovate; sepals 5, glabrous, green, lanceolate, 5–8 mm long, 1.5–2 mm wide, acute at apex, truncate at base, reflexed during anthesis; petals 5, glabrous, yellow, obovate, 4.5–7 mm long, 2–3.5 mm wide, rounded at apex, cuneate and ciliate at base; gonophore short; stamens many; filaments slender, glabrous, 4–6 mm long; ovary cylindric, 2 mm long, 1 mm thick; style slim, long or occasionally short, 1.8 mm long; stigma enlarged, unlobed, papillate.
Capsules cylindric, 2.5–7 cm long, 0.5-0.6 cm thick, longitudinally 10-ribbed or narrowly winged, glabrous and slightly warty, with apex 1/10 of length not seeded and constricted, slightly 5-dentate at tip, 5-valvate; seeds horizontal, every 20–40 longitudinally in a row between 2 valves, separated by transversal partitions, rhombic-polyhedral, black.