Family: Asteraceae
Helipterum strictum
Citation:
Benth., Fl. Aust. 3:646 (1867).
Synonymy: Xyridanthe stricta Lindley, Sketch Veg. Swan Riv. Col. xxiv (1840).
Common name: Slender sunray, urn paper-daisy.
Description:
Annual herb 10-50 cm high; stems erect to ascending, few-branched, glabrous, green; leaves alternate, lanceolate to oblanceolate, sometimes subamplexicaul, obtuse to acute, 1-5.5 cm long, 2-10 mm wide, glabrous, flat, dark-green to glaucous.
Capitula solitary or few in loose corymbs, on naked peduncles passing into the leafy stems; involucre campanulate, 9-14 mm long, c. 4-seriate, glabrous; outer bracts ovate, obtuse, scarious, brown to golden-brown, progressively longer; inner bracts uniseriate, similar but hyaline-winged, with spreading white ovate laminae 2-5 mm long; receptacle flat; florets 6-25, the innermost few often sterile.
Fertile achenes narrow-obovoid, compressed, 3-4 mm long, sericeous; pappus bristles 14-23, connate at the base, 5-6 mm long, long-plumose below, more shortly plumose above, with a terminal tuff of clavate hairs, persistent.
Published illustration:
Cunningham et al. (1982) Plants of western New South Wales, p. 692.
Distribution:
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On heavy alluvial soils and among rocks.
W.Aust.; N.T.; Qld; N.S.W.
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Conservation status:
native
Flowering time: July — Sept.
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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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