Lindley, Sketch Veg. Swan Riv. Col. xxiv (1839).
Derivation: From the generic name Aster and the modern Latin suffix -ideus, similar to, from the general appearance of the type species.
Synonymy: Athrixia Ker Gawler, Edwards' Bot. Reg. 8:681 (1823), partly. 7 species in Australia, all but one endemic to W.Aust. (G. Kroner (1980) Mitt. Bot. München 16:1-268.)
Common name: None
Annual herbs with glandular and non-glandular hairs; stems short, leafy; leaves cauline, alternate, entire, flat.
Capitula terminal, solitary on long naked wiry peduncles, homogamous to heterogamous, discoid; involucres hemispherical, multiseriate, reflexed in fruit; outer bracts sessile, subulate, plumose; intermediate bracts with subulate plumose laminae on successively longer rigid herbaceous claws; innermost bracts linear, with scarious margins and short plumose apices; receptacle flat, naked, pitted; outer florets uniseriate, female, fertile, tubular, sometimes absent; corollas narrowly funnel-shaped, 4-or 5-toothed, glandular, yellow; disk florets numerous, bisexual, fertile, tubular, 5-merous; corollas narrowly funnel-shaped, glandular, yellow; anthers tailed at the base with acute terminal appendages; style branches linear, truncate, with papillose apices.
Achenes terete, papillose; pappus uniseriate, of free plumose bristles.
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