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Conyza sumatrensis (Retz.) E.Walker
Family Asteraceae
Common name: Tall Fleabane

Conyza sumatrensis (Retz.) E.Walker APNI*

Synonyms: Conyza albida Willd. ex Spreng. APNI*
Conyza floribunda Kunth APNI*

Description: Robust, erect annual herb to 2 m high, hispid; stems unbranched or branched into an extended inflorescence, hirsute with long spreading septate hairs.

Leaves hispid with short antrorse hairs; basal leaves lanceolate to oblanceolate, 4–10 cm long, 5–12 mm wide, margins toothed; upper leaves lanceolate to linear, entire.

Inflorescence an extended panicle with numerous heads; heads broad-campanulate, 4–6 mm long, 6–10 mm diam.; involucral bracts hirsute, green with paler glabrous margins, inner surface reddish brown when reflexed. Florets creamy; outer florets filiform; inner florets few.

Achenes ovoid, sparsely hairy with thickened margins; pappus of many gold minutely barbellate bristles 3 mm long.


Herbarium
Sheet

Herbarium
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Flowering: chiefly December–August

Distribution and occurrence: Weed of cultivation, pasture and wasteland; widespread, west to the Deniliquin area. Native of N Amer.
NSW subdivisions: *SC, *NC, *CC, *NT, *CT, *ST, *NWS, *CWS, *SWS, *SWP, SFWP, *LHI
Other Australian states: *Qld *Vic. *W.A. *S.A.
AVH map***

Text by J. Everett
Taxon concept: P.S. Green (1994)


APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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