Common name: Fireweed Groundsel, Fireweed
Senecio linearifolius A.Rich. APNI*
Description: Perennial herb or shrub 50–150 cm high, stems few-branched, glabrous to cobwebby.
Leaves variable, mostly linear to lanceolate or narrow-elliptic, 6–15 cm long and 5–15 mm wide with margins ± recurved and entire to sparsely toothed, lower surface mostly cobwebby, base tapered and petiole-like; or sometimes leaves ± elliptic to obovate, 5–10 cm long and 10–30 mm wide with margins strongly and regularly toothed, lower surface glabrous, lamina scarcely tapered and base stem-clasping and auriculate.
Inflorescence corymbose, heads numerous; heads cylindrical, 2–3 mm diam., glabrous except at apices; involucral bracts 10–12, 4–5 mm long; bracteoles c. 5. Ray florets 4–8; ligules 4–6 mm long; disc florets 8–12.
Achenes compressed, 2–2.5 mm long, brown, glabrous; pappus 5–8 mm long.
Flowering: throughout year.
Distribution and occurrence: Mostly in wet sclerophyll forest; chiefly in the escarpment ranges, south from Tenterfield and west to Nundle.
NSW subdivisions: NC, CC, SC, NT, CT, ST, NWS, SWS
Other Australian states: Vic. Tas.
Text by G. J. Harden
Taxon concept: Flora of NSW 3 (1992)
Taxa not yet included in identification key
Senecio linearifolius var. arachnoideus,
Senecio linearifolius var. dangarensis,
Senecio linearifolius var. denticulatus,
Senecio linearifolius var. intermedius,
Senecio linearifolius var. latifolius,
Senecio linearifolius var. macrodontus
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.