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南方兔儿伞Syneilesis australis

时间:2013-07-23 14:47来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):南方兔儿伞 学名( Scientific Name ): Syneilesis australis Ling 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Senecio aconitifolius Turcz.:Ling ex Tsoong Cacalia krameri Ma




中文名(Chinese Name):南方兔儿伞
学名(Scientific Name):Syneilesis australis Ling
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Senecio aconitifolius Turcz.:Ling ex Tsoong  Cacalia krameri Matsum. :Ling
科属(Family & Genus):菊科(Compositae)兔儿伞属
形态特征(Description):多年生草本;根状茎粗壮,有多数被绒毛束生的根。茎单生,坚硬,具槽沟,直立,高达1米,基部被疏生长柔毛,后变无毛,直径约5毫米;中部叶疏生;下部茎叶具长柄;叶片干时近膜质,全形圆形,直径30-40厘米,基部宽盾形(达2厘米),掌状深裂;裂片长圆状披针形,下部的裂片有时不分裂,其余的裂片浅裂,或线状披针形,宽2-3厘米,顶端尖,稀二浅裂边缘有疏锯齿,具小尖头,主脉掌状,近平行,上面绿色,无毛,下面灰绿色,被短柔毛,后变无毛;叶脉凸起,具明显的网脉;叶柄长3-8厘米,基部半抱茎;上部茎叶掌状深裂或2浅裂,叶柄短,最上部的叶苞片状,线状披针形,长达5厘米,具疏锯齿。头状花序盘状,多数在茎端排成复伞房状;分枝开展,长2-3,稀达8厘米,被疏短柔毛;花序梗长达6毫米,具3-4个线状披针小苞片形。总苞圆柱形;总苞片5,长圆状披针形,长约10毫米,宽2-3.5毫米,顶端钝或尖,边缘多少膜质,背面具细条纹,顶端疏长柔毛。小花约10,全部管状,结实;花冠长9-10毫米;檐部钟状,长约7毫米;裂片披针形,长2毫米,顶端有微毛;花药伸出花冠,长5毫米,基部箭形;花柱分枝外弯,顶端被笔状微毛。瘦果圆柱形,长4-5毫米,无毛,具肋;冠毛白色或变红色。花期2-8月。
分布(Distribution):产浙江天目山、江山县及安徽的黄山。
用途(Use):
引自中国植物志英文版FOC Vol. 20-21 Page 460
Syneilesis australis Y. Ling, Contr. Inst. Bot. Natl. Acad. Peiping. 5: 5. 1937.
南方兔儿伞 nan fang tu er san | Asteraceae  | Syneilesis
Herbs, erect, to 1 m tall. Rhizomes robust, with many fascicled roots. Stem solitary, stiff, sulcate, base villous, glabrate, ca. 5 mm in diam. Median leaves laxly arranged; lower stem leaves long petiolate; petiole 3-8 cm, basally subamplexicaul; blade abaxially gray-green, adaxially green, orbicular, 30-40 cm in diam., submembranous, base broadly peltate (ca. 2 cm), palmately parted; segments oblong-lanceolate, lower segment sometimes entire, other segments lobed or linear-lanceolate, 2-3 cm wide, abaxially shortly pubescent, glabrate, adaxially glabrous, palmately veined, veins raised, distinctly reticulate, margin sparsely serrate, teeth mucronulate, apex acute, rarely 2-fid. Upper leaves shortly petiolate, palmately parted or 2-lobed. Uppermost leaves bractlike, linear-lanceolate, ca. 5 cm, sparsely serrate. Capitula discoid, many, arranged in terminal compound corymbs; branches spreading, 2-3 cm, rarely to 8 cm, sparsely pubescent; peduncles ca. 6 mm, with 3 or 4 linear-lanceolate bractlets. Involucres cylindric; phyllaries 5, oblong-lanceolate, ca. 10 × 2-3.5 mm, apex sparsely villous. Florets 10, all tubular, fertile; corolla 9-10 mm; limb campanulate, ca. 7 mm, lobes lanceolate, ca. 2 mm, apex puberulent. Anthers exserted from corolla, basally hastate. Style branches excurved, apically penicillate-puberulent. Achenes cylindric, 4-5 mm, glabrous, ribbed. Pappus of many bristles, white or reddish. Fl. Feb-Aug, fr. Oct.
● Forest margins on slopes, roadsides; 700-900 m. Anhui, Zhejiang.
Syneilesis australis is distinguished from S. aconitifolia by its larger, submembranous, basally broadly peltate leaves, with broader segments, and synflorescence branches spreading.
(责任编辑:徐晔春)
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