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Flora of Taiwan | Family List | Compositae | Vernonia

Vernonia patula (Dryand.) Merr., Philip. J. Sci. 3: 439. 1908; Kitamura, Mem. Coll. Kyoto Imp. Univ. Ser. B, Biol. 15(3): 290. 1940; Li, Fl. Taiwan 4: 958. 1978.


Vernonia patula

Credit: HAST

  • Conyza patula Dryand

    Annual herbs; stems 20-70 cm tall, erect, branches spreading, more or less ashy puberulent. Middle cauline leaves many, alternate, membranaceous, sessile or petiolate, ovate to elliptic-lanceolate, 3.5-6×2-3.5 cm, apex obtuse, base rounded-cuneate, attenuate into petiole 1-2 cm long; upper leaves gradually smaller. Heads 20-30-flowered, ovoid, peduncled, in leafy panicles; involucre depressed-globose, 6-7×8-10 mm, bracts 4-seriate, green, outer ones gradually shorter, lanceolate, acuminate, 3-4 mm long, middle and inner bracts narrowly oblong, subtruncate; corolla glabrous, 4.5 mm long, lobes 2 mm long; anthers short bifid at base. Achenes 1-1.8×0.8 mm, 5-ribbed, glabrous. Pappus bristles ca. 3.2 mm long, white.

    YUNLIN: Kukeng, Yen 9575. TAINAN: Tungshan, Peng 7091. PINGTUNG: Chiupeng, Peng 7831.

    Widely distributed in tropical Asia. Taiwan, an uncommon weed in the south.


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