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Genus Hyalosperma Family Asteraceae

Description: Annual herbs.

Leaves alternate, cauline, simple, semiterete.

Heads solitary, terminal. Heads cup-shaped to turbinate; involucral bracts multiseriate, glossy, glabrous or sparsely woolly, the claws always scarious, the inner with white or coloured lamina; receptacle flat to conical, naked. Florets numerous, bisexual. Corollas tubular, expanded above, actinomorphic. Anthers tails filiform. Style branches rounded to broad-triangular.

Achenes oblong to obovoid, glabrous, smooth or papillose; pappus bristles filiform, plumose, united in a ring at base and caducous as a whole.


Distribution and occurrence: World: 10 species, endemic Australia. Australia: all States except N.T.

Text by Paul G. Wilson
Taxon concept:

 Key to the species 
1Involucral bracts with a radiating white or coloured lamina; Heads more than 3 mm long2
Involucral bracts without a radiating white or coloured lamina; involucre less than 3 mm longHyalosperma demissum
2Heads turbinate; pappus bristles united towards base; central leaves obtuseHyalosperma glutinosum
Heads hemispherical or cup-shaped; pappus bristles free
                       Back to 1
3
3Heads broadly cup-shaped; central leaves obtuse to acute; receptacle convexHyalosperma semisterile
Heads hemispherical (spreading from base); central leaves acuminate or flexuous; receptacle conical
                       Back to 2
Hyalosperma praecox

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