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Electronic Flora of South Australia species Fact Sheet

Family: Asteraceae
Sigesbeckia microcephala

Citation: DC., Prod. 5:496 (1836).

Synonymy: S. orientalis sensu J. Black, Fl. S. Aust. 874 (1957), partly non L.

Common name: Pale Indian weed.

Description:
Erect annual herb to 80 cm high; stems terete, branched, slightly pubescent, brownish; leaves in remote pairs, sessile or shortly petiolate, lanceolate to elliptic, 3.5-9 cm long, 6-25 mm wide, flaccid, pubescent, prominently veined; margins irregularly dentate.

Capitula c. 1 cm diam., on peduncles shorter than the leaves; outer involucral bracts linear to oblanceolate, 4-7 mm long, pubescent with minute nonglandular hairs; ray florets c. 8; ligules 1-2 mm long, broadly oblong, 2- or 3-toothed at the apex, yellow; disk florets 10-20, yellow; receptacular scales obovate, obtuse, pubescent.

Achenes c. 3 mm long, slightly angled, blackish.

image of FSA3_Sigesbeckia_mic.jpg Branch, leaf, capitulum and achene.
Image source: fig. 649a in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Published illustration: Cunningham et al. (1982) Plants of western New South Wales, p. 667.

Distribution:  In mallee, mulga and forest communities.

  N.T.; N.S.W.; Vic.

Conservation status: native

Flowering time: May — Oct.


SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: No text

Author: Not yet available


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