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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Aster

19. Aster altaicus Willdenow, Enum. Pl. 2: 881. 1809.

阿尔泰狗娃花 a er tai gou wa hua

Herbs perennial, roots procumbent or vertical, not taprooted. Stems usually many, erect, 10-60(-100) cm, covered with closely-set thin hairs directed upward and often glandular in upper part, branched. Basal leaves withered by anthesis, lower linear or oblong-lanceolate, oblanceolate or subspatulate, 2.5-6(-10) × 0.7-1.5 cm, margin entire or remotely shallowly toothed, upper gradually diminished, both surfaces pubescent, densely minutely glandular, midvein abaxially slightly convex. Capitula radiate, numerous, 2-3.5(-4) cm in diam., solitary and terminal or in corymbose-paniculiform synflorescences. Involucres hemispheric, 0.8-1.8 cm in diam.; phyllaries 2- or 3-seriate, subequal or outer series short, oblong-lanceolate or linear, 4-8 × 0.5-1.8 mm, abaxially or all outer series leaflike, shortly rough pilose, short-stipitate glandular, acuminate, outermost linear and shorter than inner, margin ± broadly scarious. Ray florets ca. 20, bluish purple or lilac, tube 1.5-2.8 mm, hairy, lamina oblong-linear, 10-15 × 1.5-2.5 mm; disk florets yellow, 5-6 mm, tube 1.5-2.2 mm, lobes unequal, 0.6-1 × 1-1.4 mm, hairy. Achenes obovate-oblong, compressed, 2-3 mm, strigose, glandular. Pappus of ray and disk florets identical, sordid white or pale brown, of subequal bristles, 4-6 mm. Fl. and fr. Jul-Sep.

Steppes, meadows, salt marshes, grasslands, open slopes, stony slopes, rock outcrops, seasides, roadsides, sandy places by riverbanks; sea level to 4000 m. Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, W Sichuan, Taiwan, Xinjiang, Xizang, NW Yunnan, Zhejiang [Afghanistan, NW India, Kashmir, Kazakhstan, Korea, Mongolia, Nepal, Pakistan, Russia (Siberia), Turkmenistan, Uzbekistan; SW Asia (Iran)].


1 Inner phyllary margin narrowly scarious.   19f var. taitoensis
+ Inner phyllary margin narrowly or broadly scarious   (2)
       
2 (1) Stems and leaves spreading and coarsely white hairy.   19e var. hirsutus
+ Stems and leaves strigose   (3)
       
3 (2) Plants often gray-white, virgately branched; leaves, especially upper, adnate to stems or peduncles.   19b var. canescens
+ Plants green, procumbent- branched; leaves not always appressed to stems   (4)
       
4 (3) Stems 10-30 cm tall, usually branched from base, ascending, ± procumbent at base; capitula solitary at ends of branches.   19a var. altaicus
+ Stems 20-60 cm tall, branched in upper part or multibranched and short, subequal; capitula in few to multibranched synflorescences   (5)
       
5 (4) Leaves lanceolate; synflorescences few branched; stems erect.   19c var. scaber
+ Leaves linear-lanceolate, narrow; synflorescences multibranched; stems erect or ascending.   19d var. millefolius

Lower Taxa


 

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