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

21. Aster semiprostratus (Grierson) H. Ikeda, Fl. Mustang [Nepal]. 351. 2008.

半卧狗娃花 ban wo gou wa hua

Heteropappus semiprostratus Grierson, Notes Roy. Bot. Gard. Edinburgh 26: 151. 1964.

Herbs, perennial, (3.5-)5-15 cm tall, caespitose; rhizome short. Stems and branches decumbent or ascending, branched from base, sometimes with densely leafy undeveloped branches in leaf axils, reddish, long white strigose, sparsely short-stipitate glandular (particularly upward). Leaves linear-oblanceolate or oblanceolate to spatulate, 1-3.2 × 0.2-0.4 cm, ± densely strigose, with sessile glands, or adaxially sparsely strigose, base attenuate, margin entire, strigose-ciliate, midvein abaxially convex, slightly concave adaxially, sometimes basally 3-veined, apex obtuse to acute, mucronate. Capitula radiate, solitary at ends of stems or branches, or sometimes 2 or 3 in corymbiform synflorescences, 1.5-3 cm in diam. Involucres hemispheric, 1-1.5 cm in diam.; phyllaries 3-seriate, green, lanceolate, 6-8 × 0.8-1.8 mm, abaxially strigose, short-stipitate glandular, outer margin leaflike or narrowly scarious, inner phyllaries ± broadly scarious, erose, scabrous- or glandular ciliate, apex acuminate, often purplish. Ray florets (20-)25-35, blue or purplish, tube 2-2.9 mm, hairy, lamina 1.2-1.5 × 0.1-0.2 cm; disk florets yellow, 4-6.3 mm, tube 1.5-2.3 mm, tube and limb sparsely hairy, limb narrowly campanulate, lobes unequal, 1 deep, 5-7.5 mm, hairy. Achenes straw-colored, becoming black mottled or nearly black, obovate, flattened, 1.8-2.5 mm, strigose, apically with sessile glands, margin faintly 2-ribbed, long strigose. Pappus 2- or 3-seriate, reddish to reddish brown, unequal, 4-5 mm. Fl. Jun-Aug.

Dry open stony, gravelly, or sandy slopes, gravelly and sandy open or shrubby floodplains, alpine meadows, rock outcrops; 3200-4600 m. Qinghai, Xizang [Kashmir, Nepal].


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