学名(拉丁名) | Cremanthodium stenactinium |
中文名 | 膜苞垂头菊 |
命名人 | Diels ex Limpr. |
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 stenactinium |
命名人 | Diels ex H. Limpr. (accepted name) |
拉丁属名 | Cremanthodium |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Cremanthodium stenactinium |
中文名 | 膜苞垂头菊 |
拉丁属名 | Cremanthodium |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Cremanthodium stenactinium |
中文名 | 膜苞垂头菊 |
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 |
学名 | 状态 | 来源 | 命名人 |
---|---|---|---|
Cremanthodium stenactinium var. stenactinium | Synonym | The Plant List | |
Cremanthodium stenactinium var. evillosum Hand.-Mazz. | Synonym | The Plant List |
Cremanthodium stenactinium var. evillosum Handel-Mazzetti.
Plants grayish green or bluish green. Stem solitary, erect, 40-50 cm tall, ca. 1.1 cm in diam. at base, middle to proximal part glabrous, distalmost part brown pilose. Basal leaves broadly petiolate; petiole 4-8 cm, to 2.5 cm wide, glabrous, base broadly sheathed; leaf blade oblong or elliptic, 6-15 × 2-6 cm, pinnate-parallel or parallel veined, glabrous, base narrowed into a petiole, margin entire, apex acute or obtuse. Stem leaves 5 or 6, erect; middle to proximal stem leaves oblong, 4-8 cm, tubular-amplexicaul, apex obtuse, mucronate; distalmost stem leaves bracteal, membranous, apex obtuse. Capitula 1-13, in raceme, rarely solitary, nodding; peduncles 0.5-8 cm, brown pilose; leaflike bracts yellowish white, ovate, membranous. Involucre hemispheric, 1.3-1.5 × 1.5-3 cm, outside brown pilose or glabrescent; phyllaries 12-16, in 2 rows, elliptic or oblong, 6-8 mm wide, apex acute or acuminate; inner phyllaries broadly membranous at margin. Ray florets pale yellow; lamina linear-lanceolate, 3-7 cm × 1.5-2.5 mm, apex long acuminate; tube ca. 5 mm. Tubular florets numerous, yellow, ca. 1 cm; tube ca. 3 mm. Achenes yellowish brown, cylindric, ca. 5 mm. Pappus white, as long as tubular corolla. Fl. Jul-Sep.
Grasslands, stream banks; ca. 3600 m. NW Sichuan, NE Xizang.
64.膜苞垂头菊
Cremanthodium stenactinium Diels ex Limpr. in Fedde, Rep. Sp. Nov Beih. 12: 510. 1922; Good in Journ. Linn. Soc. Bot. 48: 295. 1929; Hand.-Mazz. in Acta Hort. Gothob. 12: 307. 1938; S. Y. Hu in Quart. Journ. Taiwan Mus. 19: 217. 1966; H. Koyama in Mem. Fac. Sci. Kyoto Univ. Ser. Biol. 2: 59. 1968, in add. ——C. steractinium var. evillosum Hand.-Mazz. in Not. Bot. Gart. Berl.-Dahl 13: 642. 1937; S. Y. Hu, l. c. 19: 217. 1966, syn. nov.
多年生草本,全株灰绿色或蓝绿色。根肉质,直径3-4毫米,多数。茎单生,直立,高40-50厘米,最上部被褐色有节柔毛,余者均光滑,基部直径1.1厘米,被枯叶柄包围。丛生叶与茎基部叶具宽柄,柄长4-8厘米,宽达2.5厘米,光滑,基部具宽鞘,叶片长圆形或椭圆形,长6-15厘米,宽2-6厘米,先端急尖或钝圆,全缘,基部渐狭成柄,柄与叶片间有时无明显界线;茎生叶5-6,互相密接,直立,筒状抱茎,中下部者长圆形,长4-8厘米,先端钝,有尖头,最上部者膜质,苞叶状,先端钝。头状花序辐射状,下垂,1-13,通常排列成总状花序,稀单生;花序梗长0.5-8厘米,被褐色有节柔毛;总苞半球形,长1.3-1.5 厘米,宽1.5-3厘米,被褐色有节柔毛,或脱毛近光滑,基部被膜质卵形苞片,总苞片12-16,2层,椭圆形或长圆形,宽6-8毫米,先端急尖或渐尖,内层具宽的膜质边缘。舌状花淡黄色,舌片线状披针形,长3-7厘米,宽1.5-2.5毫米,先端长渐尖,管部长约5毫米;管状花黄色,长约10毫米,管部长约3毫米,冠毛白色,与花冠等长。瘦果(未熟)长约4毫米,光滑。花期7-9月。
产四川西北部。生于海拔3600米的灌丛中、草地、水边。模式标本采自巴塘-理塘。