Conyza sumatrensis (Retz.) E.Walker
Walker, E.H. (1971) Journal of Japanese Botany 46: 72. Type: ?.
Erigeron sumatrensis Retz., Observationes Botanicae 5: 28(1789), Type: ?.
Erect stemmed herb up to 2 m tall. Stems clothed in pale hairs.
Leaf blades 20-35 x 2.5-3 mm, petioles absent. Surfaces of the leaf blade clothed in hairs.
Flowers borned in terminal panicles of heads. Heads multiflowered, 6-7 mm diam. Outer flowers with a narrow corolla tube to about 4 mm long. Inner flowers (disk flowers) have a calyx of about 24 hairs (pappus) 3-3.5 mm long. Corolla tube about 3.5 mm long, corolla lobes triangular, about 0.5 mm long. Stamens 5, fused to form a tube around the style. Anthers attached about halfway up the tube.
Features not available.
Distribution and Ecology
An annual herb native to North America but naturalized in Australia occurring in CYP, NEQ, CQ and NSW. Altitudinal range from 4-1500 m. Found in Sclerophyll Forest, Notophyll Vine Forest, Open Eucalyptus and Melaleuca Forest and in various types of woodland and shrubland.
A weed of cultivated and disturbed ground.
Herb (herbaceous or woody, under 1 m tall)
Shrub (woody or herbaceous, 1-6 m tall)