学名(拉丁名) | Cremanthodium pseudo-oblongatum |
中文名 | 无毛垂头菊 |
命名人 | Good |
中文科名 | 菊科 |
拉丁属名 | Cremanthodium |
类型 | species |
拉丁科名 | Compositae |
中文属名 | 垂头菊属 |
学名(拉丁名) | Cremanthodium pseudo-oblongatum |
中文名 | 无毛垂头菊 |
拉丁属名 | Cremanthodium |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Cremanthodium pseudo-oblongatum |
中文名 | 无毛垂头菊 |
中文科名 | 菊科 |
拉丁属名 | Cremanthodium |
类型 | species |
拉丁科名 | Asteraceae |
中文属名 | 垂头菊属 |
Stems 1 or 2, erect, purplish red, 8-12 cm tall, 1-2 mm in diam. at base, glabrous. Basal leaves petiolate; petiole purplish red, 1.5-4 cm, winged, glabrous, base sheathed; leaf blade ovate or oblong, 2-5 × 1.5-3.5 cm, thick, glabrous, pinnately veined, base truncate, margin entire and sparsely coarsely dentate, apex acute or subrounded. Middle to distal stem leaves sessile, bracteal, ovate or elliptic to linear, base semiamplexicaul, margin dentate, apex acuminate. Capitulum solitary, nodding. Involucre hemispheric, 1-1.5 × 1-2 cm, outside glabrous; leaflike bracts 3-7, linear; phyllaries 12-14, in 2 rows, 2-4 mm, apex long acuminate, white ciliate; outer phyllaries narrowly lanceolate; inner phyllaries lanceolate, margin membranous. Ray florets yellow; lamina linear-lanceolate, 1.5-2.5 cm × 3-5 mm, apex long acuminate, 3-dentate; tube ca. 4 mm. Tubular florets numerous, dark yellow, 7-8 mm; tube 2-3 mm. Achenes (immature) ca. 3 mm. Pappus white, as long as tubular corolla. Fl. Jul.
Gravelly areas on mountains; 5100-5300 m. S Xizang [Bhutan, ?India (Sikkim)].
52.无毛垂头菊
Cremanthodium pseudo-oblongatum Good in Journ. Linn. Soc. Bot. 48: 297. 1929; S. Y. Hu in Quart. Journ. Taiwan Mus. 19: 216. 1966; H. Koyama in Mem. Fac. Sci Kyoto Univ. Ser. Biol. 2: 58. 1968.
多年生草本。根肉质,多数。茎1-2,直立,高8-12厘米,紫红色,光滑,基部直径1-2毫米,被枯叶柄纤维包围。丛生叶和茎基部叶具柄,柄有翅,紫红色,长1.5-4厘米,光滑,基部鞘状,叶片卵形或长圆形,长2-5厘米,宽1.5-3.5厘米,先端急尖或近圆形,全缘或有疏齿,基部截形,两面光滑,叶脉羽状;茎中上部叶苞叶状,无柄,卵形或椭圆形至线形,先端渐尖,边缘有齿,基部半抱茎。头状花序单生,下垂,辐射状,总苞半球形,长1-1.5厘米,宽1-2厘米,光滑,基部有3-7个线形苞片,总苞片12-14,2层,宽2-4,毫米,先端长渐尖,具白色睫毛,外层狭披针形,内层披针形,边缘膜质。舌状花黄色,舌片线状披针形,长1.5-2.5厘米,宽3-5毫米,先端长渐尖,具3齿,管部长约4毫米;管状花多数,暗黄色,长7-8毫米,管部长2-3毫米,冠毛白色,与花冠等长。瘦果(未熟)长约3毫米,光滑。花期7月。
产我国西藏南部(模式标本产地)。生于海拔5100-5300米的高山流石滩。锡金、喜马拉雅山西部也有分布。