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Flora of Taiwan | Family List | Compositae | Laggera

Laggera alata (D. Don) Sch. Bip. ex Oliver, Trans. Linn. Soc. 39: 94. 1873; Kitamura, Mem. Coll. Sci. Kyoto Imp. Univ., Ser. B, Biol. 13: 250. 1937; Li, Fl. Taiwan 4: 899, pl. 1238. 1978.

六角草

Laggera alata

Credit: HAST

  • Erigeron alatum D. Don

    Stout, leafy herbs, much branched, pubescent or tomentose. Stems 50 cm tall, erect, with entire wings, wings ca. 2 mm broad. Cauline leaves oblong, 8×1.5-2 cm, apex obtuse, base narrowed-decurrent, margins mucronulate, sometimes almost entire, upper surface green, lower surface pale, densely hairy on both surfaces, upper leaves gradually smaller. Heads in racemes on short axillary winged branches, drooping in fruit. Florets purplish. Involucre ovoid, 9 mm across, bracts 5-seriate, outer ones shorter, herbaceous, lanceolate, often recurved, inner ones longer, linear, scarious, acuminate. Corolla of outer florets filiform, 6 mm long, shortly 5-lobed; corolla of central florets tubular, 7 mm long, shortly 5-lobed, papillose. Achenes 1 mm long. Pappus 5.5 mm long, bristles equal, minutely scabrid.

    TAICHUNG: Fengyuan, Peng 12196.

    Tropical Africa and Asia. Taiwan, waste places and sunny meadows, not common.


     

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