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小一点红Emilia prenanthoidea

时间:2013-11-11 14:13来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 小一点红 学名( Scientific Name ): Emilia prenanthoidea Thwaites 英文名( English Common Name ): 别名( Chinese Common Name ): 细红背叶 异名( Synonym ): Emilia angustifolia DC. Senecio prenanthoidea (DC.
中文名(Chinese Name):小一点红
学名(Scientific Name):Emilia prenanthoidea Thwaites
英文名(English Common Name):
别名(Chinese Common Name):细红背叶
异名(Synonym):Emilia angustifolia DC.  Senecio prenanthoidea (DC.) K.Schum. & Lauterb.  Cacalia teres Wall. 
科属(Family & Genus):菊科Compositae一点红属Emilia
形态特征(Description):一年生草本,茎直立或斜升,高30-90厘米,无毛或被疏短毛。基部叶小,倒卵形或倒卵状长圆形,顶端钝,基部渐狭成长柄,全缘或具疏齿,中部茎叶长圆形或线状长圆形,长5-9厘米,宽1-3厘米,顶端钝或尖,无柄,抱茎,箭形或具宽耳,边缘具波状齿,上面绿色,下面有时紫色,两面无毛或近无毛,上部叶小线状披针形,头状花序在茎枝端排列成疏伞房状;花序梗细纤,长3-10厘米;总苞圆柱形或狭钟形,长8-12毫米,宽5-10毫米,基部无小苞片;总苞片10,长12毫米,长圆形,宽1-2毫米,短于小花,边缘膜质。背面无毛。小花花冠红色或紫红色,长10毫米,管部细,檐部5齿裂,裂片披针形;花柱分枝顶端增粗。瘦果圆柱形,长约3毫米,具5肋,无毛;冠毛丰富,白色,细软。花果期5-10月。
分布(Distribution):产云南(昭通、思茅、保山、临沧)、贵州(兴仁、贞丰、独山、荔波、雷山、凯里、天柱、黎平)、广东、广西、浙江、福建。生山坡路旁、疏林或林中潮湿处,海拔550-2000米。印度至中南半岛也有分布。
用途(Use):
引自中国植物志英文版:FOC Vol. 20-21 Page 542, 543     
Emilia prenanthoidea Candolle, Prodr. 6: 302. 1838.
小一点红 xiao yi dian hong | Asteraceae  | Emilia
Emilia angustifolia Candolle.
Herbs, annual. Stems erect or ascending, 30-90 cm tall, glabrous or sparsely pilose. Basal leaves obovate or obovate-oblong, small, base gradually attenuate into long petiole, margin entire or laxly dentate, apex obtuse. Median leaves sessile, abaxially sometimes purplish, adaxially green, oblong or linear-oblong, 5-9 × 1-3 cm, glabrous or subglabrous, base semiamplexicaul, hastate or auriculate, margin repand-dentate, apex obtuse or acute. Upper leaves linear-lanceolate, small. Capitula arranged in terminal lax corymbs; peduncles 3-10 cm, slender. Involucres cylindric or narrowly campanulate, 6-11 × 2-3 mm; phyllaries 10, oblong, 6-12 × 1-2 mm, shorter than florets, glabrous, margin scarious. Florets red or purple-red; corolla ca. 10 mm, tube slender, limb 5-lobed; lobes lanceolate, 2-3 mm. Style branches apically thickened. Achenes cylindric, ca. 3 mm, glabrous, 5-ribbed. Pappus of capillary-like bristles, soft, white. Fl. and fr. May-Oct.
Roadsides on slopes, lax forests, wet places in forests; 500-2000 m. Fujian, Guangdong, Guangxi, Guizhou, Sichuan, Yunnan, Zhejiang [India, Indonesia, Malaysia, New Guinea, Philippines, Thailand, Vietnam].
 




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