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27. Aster arenarius (Kitamura) Nemoto, Fl. Jap. Suppl. 736. 1937.

普陀狗娃花 pu tuo gou wa hua

Heteropappus arenarius Kitamura, Acta Phytotax. Geobot. 2: 43. 1933; H. hispidus (Thunberg) Lessing subsp. arenarius (Kitamura) Kitamura.

Herbs, biennial or perennial, 15-70 cm tall; taproot woody. Stems procumbent or ascending, branched from base, sparsely to moderately strigose or glabrate. Leaves: basal petiole 1.5-3 cm; blade spatulate, 3-6 × 1-1.5 cm, thick, glabrate or sparsely villous, base cuneate to attenuate, margin entire or sometimes remotely serrate, scabrous-ciliate, apex rounded to acute; lower and basal cauline leaves withered by anthesis; middle and upper leaves oblanceolate-oblong, 1-2.5 × 0.2-0.6 cm, glabrous or sometimes sparsely strigose, base attenuate, margin scabrous-ciliate, apex rounded to acute. Capitula solitary at ends of branches, 25-30 mm in diam., peduncle apex dilated; bracts leaflike, surrounding capitulum. Involucres patelliform, 1.2-1.5 cm in diam.; phyllaries 2-seriate, lanceolate, 7-8 × 1-1.5 mm, sparsely scabrous or glabrous, margin scabrous-ciliate, apex acuminate. Ray florets bluish or whitish, tube ca. 1.5 mm, lamina linear-oblong, ca. 1.2 × 0.25 cm; disk florets yellow, 4-5 mm, tube 1.3-1.5 mm, limb funnelform, enlarged, sparsely hairy at base, lobes unequal, triangular, ca. 0.7 mm. Achenes yellowish brown, obovoid, compressed, 2.5-3 mm, strigose, 2- or 3-ribbed. Pappus 1-seriate, of ray florets sordid, basally connate scales ca. 1 mm, of disk florets brownish, numerous, rigid bristles 3-4.2 mm.

Sandy seashores; near sea level. Zhejiang (Putuo) [Japan].


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