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Flora of Taiwan | Family List | Compositae

Vernonia Schreb.


Vernonia patula

Credit: HAST

Erect branching subshrubs or herbs, rarely scandent. Leaves alternate, pubescent or glabrous. Heads discoid, in corymbs or sometimes panicles, florets pink, purple or blue. Involucre campanulate or subglobose, bracts imbricate, in many series, outer series smaller, sometimes spreading, acute, acuminate, awn-tipped, or obtuse. Receptacle alveolate denticulate, rarely with crisped hairs, florets all tubular, fertile. Corolla regular, 5-cleft. Anthers obtuse or sagittate at base, auricles connate. Style arms linear, subacute, puberulent. Achenes 8 to 10-ribbed, truncate, callose at base, glabrous or pubescent. Pappus bristles numerous, 1- or 2-seriate, inner row capillary, deciduous or persistent; outer row very short.

About 1,000 species in warmer regions of America, Asia and Africa; in Taiwan, five species, one of which is represented by two varieties.


1 Plants erect or ascending.   (2)
+ Plants scandent or climbing.   (5)
2 (1) Pappus bristles 2-seriate; achenes hirsute.   (3)
+ Pappus bristles 1-seriate; achenes glabrous.   (4)
3 (2) Involucre and inner pappus ca. 4-5 mm.   var. cinerea
+ Involucre and inner pappus ca. 3-3.5 mm.   var. parviflora
4 (2) Plants woody at base, ca. 10 cm tall.   Vernonia maritima
+ Plants herbaceous, 35-70 cm tall.   Vernonia patula
5 (1) Leaves subcoriaceous; florets ca. 10 per head; achenes glandular; pappus whitish tawny, 4-4.5 mm long.   Vernonia elliptica
+ Leaves chartaceous; florets ca. 5 per head; achenes puberulous; pappus reddish brown, 9-11 mm long.   Vernonia gratiosa

Lower Taxa

Related Synonym(s):


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