Senecio linearifolius var. arachnoideus I.Thomps. APNI*
Description: Plants not glaucous; immature leaves and stems commonly clothed with ± dense white wool early in development.
Upper-stem leaves narrow to very narrow-elliptic, to 12 cm long; base (excluding auricles) ± attenuate and petiole-like or cuneate; auricles, if present, often ± disjunct from or only narrowly connected to lamina, sometimes rather large, entire, often lobed; margin of leaves mostly denticulate to dentate, not revolute, frequency of teeth 2–5 per cm; upper surface: veins sometimes strongly impressed, at first usually appressed-cobwebby, glabrescent; lower surface with scattered, weak, coarse spreading hairs or moderately cobwebby, glabrescent; secondary venation sharply raised; tertiary venation distinct.
Peduncles often cobwebby around anthesis. Involucral bracts 9–13, 3.5–4.5 mm long, 1.5–2.5 mm long. Florets 18–25; ligulate florets (5–)6-–8; disc florets 13–17.
Achenes 2.0–2.5 mm long, usually glabrous,rarely with papillose hairs in bands.
Flowering: Spring to late Summer
Distribution and occurrence: Widespread in eastern NSW
Grows in forest and coastal scrub.
NSW subdivisions: CC, SC, NT, CT, ST, NWS
Other Australian states: Tas.
Text by Peter G. Wilson
Taxon concept: Thompson, Muelleria vol. 20 (2004)
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