Print Fact SheetCyanthillium cinereum

Taxonomy

Cyanthillium cinereum (L.) H. Rob., Proc. Biol. Soc. Washington 103:252. 1990

Common synonyms

Baccharis chinensis Lour.; Blumea chinensis (L.) DC.; Blumea chinensis var. chinensis; Blumea nitida Wall.; Blumea nitida Wall. ex C.B.Clarke; Cacalia chinensis (L.) Kuntze; Cacalia cinerea (L.) Kuntze; Cacalia cinerea var. umbrosa Kuntze; Conyza chinensis L.; Conyza chinensis var. chinensis; Conyza cinerea L.; Conyza sinensis J.F.Gmel.; Cyanopis erigeroides DC.; Cyanopis erigeroides var. erigeroides; Cyanthillium chinense (L.) Gleason; Cyanthillium cinereum var. cinereum; Cyanthillium cinereum var. ovatum Isawumi; Cyanthillium cinereum var. ugandense (C.Jeffrey) Isawumi; Cyanthillium cinereum var. viale (DC.) Isawumi; Duhaldea chinensis (Lour.) DC.; Eupatorium myosotifolium Jacq.; Eupatorium reflexum Moench; Seneciodes cinereum (L.) Kuntze ex Kuntze; Senecioides cinerea (L.) Kuntze; Senecioides cinerea (L.) Kuntze ex Britton & P. Wilson; Serratula cinerea (L.) Roxb.; Vernonia chinensis (L.) Less.; Vernonia chinensis var. chinensis; Vernonia cinerea (L.) Less.; Vernonia cinerea f. aridicola Domin; Vernonia cinerea f. genuina Domin; Vernonia cinerea f. latifolia Domin; Vernonia cinerea subsp. vialis (DC.) Humbert; Vernonia cinerea var. antoniensis (L.) Bolle; Vernonia cinerea var. cinerea; Vernonia cinerea var. erigeroides (DC.) Domin; Vernonia cinerea var. erigeroides (DC.) H.O.Forbes; Vernonia cinerea var. glabriuscula DC.; Vernonia cinerea var. lanata Kosterm.; Vernonia cinerea var. lentii (O.Hoffm.) C.Jeffrey; Vernonia cinerea var. linifolia (Blume) J.Kost.; Vernonia cinerea var. obtusa J.Kost.; Vernonia cinerea var. parviflora (Reinw. ex Blume) DC.; Vernonia cinerea var. parviflora (Reinw.) DC.; Vernonia cinerea var. ugandensis C.Jeffrey; Vernonia cyanonioides Walp.; Vernonia diffusa Decne.; Vernonia erigeroides (DC.) DC.; Vernonia lentii Volk. & O.Hoffm.; Vernonia leptophylla DC.; Vernonia linifolia Blume; Vernonia montana Hook.f.; Vernonia parviflora Reinw.; Vernonia physalifolia DC.; Vernonia rhomboides Edgew.; Vernonia sinulata Miq.

Common name

Little Ironweed

Description

Propagule or dispersal unit is the fruit with pappus. Fertile part 1.4-2.1 mm long, 0.3-0.5 mm wide, in side view widest in upper part (obovoid) or widest in the middle, +/- straight, the upper (apical) end narrowing, in cross-section round (terete), flattened or angular (prismatic), basal scar (carpopodium) pronounced and well-differentiated, central, beak (=thinner sterile stalk between seed and pappus) absent, wings absent, fruit surface light brown or straw, smooth (except at cellular level), with simple straight hairs or glands or glandular hairs, thickened margin absent, longitudinal ribs absent.

Pappus type bristles / hairs, pappus elements clearly differentiated, rarely all +/- similar (by misinterpretation), up to 0-5 mm long, in one row, pappus elements numerous, elements falling off individually, the individual bristles rough / serrated (barbellate), +/- equal width along length, white / translucent.

Ecology

Annual herb, seeds wind-dispersed. Tropical to subtropical regions. Found in open forests, along roads and in disturbed or fallow areas.

Native range

Tropical Africa and tropical Asia.

Introduced range

Tropical areas on all continents and Pacific islands