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午时花Pentapetes phoenicea

时间:2013-12-04 17:54作者:徐晔春 点击: 次 标签: Sterculiaceae 梧桐科 午时花属 Pentapetes
  中文名(Chinese Name):午时花
学名(Scientific Name):Pentapetes phoenicea L.
英文名(English Common Name):flor impia
别名(Chinese Common Name):夜落金钱
异名(Synonym):
科属(Family & Genus):梧桐科(Sterculiaceae)午时花属
形态特征(Description):一年生草本,高0.5-1米,被稀疏的星状柔毛。叶条状披针形,长5-10厘米,宽1-2厘米,顶端渐尖,基部阔三角形、圆形或截形,边缘有钝锯齿;叶柄长1-2.5厘米。花1-2朵生于叶腋,开于午间,闭于明晨;萼片5枚,披针形,长约1厘米,外面被星状柔毛及刚毛;花瓣5片,红色,广倒卵形,长约12毫米;雄蕊15枚,每3枚集合成群,并与退化雄蕊互生,基部连合,退化雄蕊5枚,舌状,长12-13毫米,宽约1毫米;子房无柄,5室,卵形,被长柔毛,每室有胚珠约8-12个,花柱线形,无毛,长约1厘米。蒴果近圆球形,直径约1.2厘米,密被星状毛及刚毛,比宿存萼短。花期夏秋。
分布(Distribution):原产印度,我国广东、广西、云南南部等地多有栽培,亚洲热带地区和日本也有分布。
用途(Use):
引自中国植物志英文版:FOC Vol. 12 Page 326 
Pentapetes phoenicea Linnaeus, Sp. Pl. 2: 698. 1753.
午时花 wu shi hua| Sterculiaceae  | Pentapetes
Annual herbs, 0.5-1 m tall, sparsely stellate hairy. Petiole 1-2.5 cm; leaf blade linear-lanceolate, 5-10 × 1-2 cm, base broadly cuneate, rounded or truncate, margin crenate, apex acuminate. Flowers opening at noon, closing at dawn. Calyx lobes lanceolate, ca. 1 cm, abaxially stellate velutinous and hispid. Petals red, broadly ovate, ca. 12 mm. Staminodes tongue-shaped, 12-13 × ca. 1 mm. Ovary ovoid, villous; ovules 8-12 per cell; style filiform, glabrous, ca. 1 cm. Capsule nearly globose, ca. 1.2 cm in diam., densely stellate hairy and hispid, shorter than persistent calyx. Fl. summer-autumn.
Cultivated, requires moist conditions. Guangdong, Guangxi, Sichuan, S Yunnan [Bangladesh, India, Indonesia, Japan, Malaysia, Myanmar, Nepal, Philippines, Sri Lanka, Thailand, Vietnam; N Australia; naturalized in Central America].
Pentapetes phoenicea is a plant of tropical Asia that is cultivated for its bright red flowers. It has become naturalized in many areas such that the native distribution is now obscured.
 


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