Hyalosperma semisterile (F.Muell.) Paul G.Wilson APNI*
Synonyms: Helipterum jessenii F.Muell. APNI*
Helipterum semisterile APNI*
Description: Erect or ascending sparsely cottony to glabrous annual branching at base, to 15 cm high.
Leaves slender, semi-terete, 5–15 mm long, c. 0.2 mm wide, obtuse to acute.
Heads terminal, solitary; heads broadly cup-shaped, c. 4 mm long, radiant, glabrous; outer involucral bracts silver to pale brown, glossy; inner bracts with yellow ovate lamina 2–5 mm long; receptacle convex. Florets numerous. Corollas c. 2.5 mm long, deeply 5-toothed.
Achenes compressed obovoid, c. 1.5 mm long, verrucose; pappus bristles ± equal to corolla.
Flowering: spring to early summer.
Distribution and occurrence: Grows in woodland or exposed places; widespread in inland districts.
NSW subdivisions: NWS, CWS, SWS, NWP, SWP, NFWP, SFWP
Other Australian states: Qld Vic. S.A.
Text by Paul G. Wilson
Taxon concept: Flora of NSW 3 (1992)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
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