F. Muell., Linnaea 25:418 (1853).
Synonymy: Not Applicable
Common name: Tall yellow-top, showy groundsel, camel weed.
Erect glabrous glaucous shrub, 70-150 cm tall; leaves somewhat crowded and overlapping, oblanceolate to spathulate, 5-9 x 1.5-2.5 cm, serrulate distally, the upper ones sometimes entire and obtuse, shortly decurrent or stem-clasping.
Inflorescence corymbose, of 10-50 capitula, repeatedly branching, branches stiffly erect; peduncles 2-3 rarely 4 cm long, apically dilated and hollow; involucre narrowly campanulate., 9-11 x 6-7 mm; bracts 12-18; calyculus often absent, sometimes of 1 or 2 bracteoles; ray florets 4-8; ligules 7-15 x 4-5 mm, 4-8-nerved, rarely the nerves redoubled to 8-12 or 14; disk florets 30-45.
Achene subcylindric, 5-6 x c. 1.5 mm with hairs short, spreading, most dense between the indistinct ridges; ray-achenes yellow-green; diskachenes red-brown; pappus white to tawny, of many persistent barbellate bristles with acute barbs 4 times longer than broad, apices subplumose.
Cunningham et al. (1982) Plants of western New South Wales, p. 675.
Most frequent near stream beds, often in deep-red sand, occasional on open plains, sometimes locally abundant along the roads and ditches, occasionally collected from swamps in the south.
S.Aust.: NW, LE, GT, FR, EA, EP, MU. W.Aust.; N.T.; Qld; N.S.W.; Vic.
Flowering time: mainly Aug. — Nov.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
There is some overlap of characters between this species and the next and probably related species. The possibility of introgression in areas of likely contact needs further investigation.
Not yet available