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Conyza canadensis (L.) Cronquist var. canadensis Family Asteraceae
Common name: Canadian Fleabane

Conyza canadensis var. canadensis (L.) Cronquist APNI*

Description: Robust, erect annual herb to 1.5 m high, hispid; stems simple below the inflorescence, sparsely hirsute with long spreading septate hairs.

Leaves with long spreading antrorse septate hairs mainly confined to the margins and lower midrib; basal leaves oblong to oblanceolate, 2–10 cm long, 3–8 mm wide, toothed; upper leaves elliptic to linear, entire or finely toothed.

Inflorescence an extensive pyramidal panicle; heads campanulate to hemispherical, 3–4 mm long, 3–4 mm diam.; involucral bracts glabrous or sparsely hairy, light brown with paler margins, inner surface light brown. Outer florets with white ligules c. 1 mm long; inner florets few.

Achenes oblong, pale, pubescent; pappus of many, creamy bristles c. 4 mm long.


Herbarium
Sheet

Flowering: most of year.

Distribution and occurrence: Grows as a weed in a disturbed sites; widespread, from the coast west to Culcairn area. Native of N Amer.
NSW subdivisions: *CC, *SC, *NT, *CT, *ST, *NWS, *CWS, *SWS
Other Australian states: *Qld *Vic. *Tas. *W.A. *S.A.
AVH map***


The single variety in NSW. Characters and distribution as for the species in NSW.

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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