Erigeron sumatrensis Retz.

Retzius, A.J. (1788), Observationes Botanicae 5: 28. Type: Indonesia. E. Sumatra, Rev. D. Wennerberg s.n.

Tall Fleabane

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.

Achenes oblong-elliptic to obovoid, ca. compressed. Pappus composed of mostly 10-30 subcapillary, barbellate bristles, sometimes with an outer series of much shorter bristles

Features not available.

An annual herb native to North America but naturalised in Australia occurring in NEQ, CEQ and southwards throughout southern Australia. 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.

Conyza sumatrensis (Retz.) E.Walker, Journal of Japanese Botany 46: 72 (1971).