Family: Asteraceae
Helipterum oppositifolium
Citation:
S. Moore, J. Bot., Lond. 35:165 (1897).
Synonymy: Griffithia helipteroides J. Black, Trans. R. Soc. S. Aust. 37:122 (1913).
Common name: Twin-leaved sunray.
Description:
Annual or ephemeral herb 7-12 cm high; stem few-branched, erect, glabrous, brown; leaves cauline, all opposite, linear to narrow-lanceolate, subamplexicaul, acute, 0.5-2 cm long, 1-2 mm wide, flat with recurved margins, glabrous.
Capitula few in a loose leafy cyme, shortly pedunculate; involucre campanulate, 7-8 mm long, c. 3-seriate, glabrous; outer bracts elliptic, obtuse, scarious, straw-coloured; inner bracts longer with oblong scarious claws and ovate to orbicular whitish laminae 1-2 mm long; receptacle flat; florets 12-16.
Achenes compressed, truncate, c. 2 mm long, villous; pappus bristles 15-22, c. 4 mm long, very shortly connate, evenly plumose from the base, persistent.
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Conservation status:
native
Flowering time: recorded in 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:
Known for this State on the basis of 2 collections, in 1912 and 1939.
Author:
Not yet available
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