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.
| Branch, leaf, capitulum and achene.
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Image source: fig. 649a in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).
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Published illustration:
Cunningham et al. (1982) Plants of western New South Wales, p. 667.
Distribution:
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In mallee, mulga and forest communities.
N.T.; N.S.W.; Vic.
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Conservation status:
native
Flowering time: May — Oct.
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SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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Biology:
No text
Author:
Not yet available
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