Family: Asteraceae
Helichrysum obtusifolium
Citation:
F. Muell. & Sonder ex Sonder, Linnaea 25:513 (1853).
Synonymy: Ozothamnus tephrodes Turcz., Bull. Soc. Imp. Nat. Mosc. 24:79 (1851), non H. tephrodes Sweet (1827).
Common name: None
Description:
Bushy somewhat rigid much-branched tap-rooted perennial, 10-30 cm tall; stems and branches wholly enveloped in longitudinally matted cobwebby hairs forming a silvery-white sheath, somewhat viscid from the exudations of underlying glandular hairs; leaves oblanceolate, usually narrowly so, with recurved margins, rounded apex and sessile base, mostly 0.4-2.5 cm long, 1-2 mm wide, discolorous, viscid, glabrous on the upper side, on the underside with a silvery-white vestiture as on the stems.
Capitula solitary, terminal on erect leafy branchlets, broadly campanulate (the lower part of the involucre firm and subglobular, with the laminae of the intermediate bracts patent at flowering) usually 1.2-1.5 cm occasionally only c. 0.7 cm long in the pressed state (including the laminae), eventually 2-3 cm, occasionally only c. 1 cm diam.: involucral bracts 4- or 5-seriate, the inner ones longest; outer bracts narrowly ovate, brown and hyaline for the most part enveloped in viscid cobwebby hairs; inner bracts with opaque white scarious narrowly elliptic entire obtuse laminae and oblong yellowish rigid opaque claws with colourless hyaline margins and a tuft of long woolly hairs distally, the laminae 8-12 mm rarely only 4 mm long and one and a half times to twice the length of the claws and the florets; florets numerous, the outer row female; style branches more or less truncate, papillose.
Achenes oblong-ellipsoid, somewhat angular, brown, with scattered antrorse papillae; pappus bristles of bisexual florets 18-22, white, for most of their length shortly plumose, coarsely so at the apex, of the female florets none.
Distribution:
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Occurs in mallee heath on deep sandy soils.
W.Aust.; N.S.W.; Vic.; Tas.
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Conservation status:
native
Flowering time: Sept. — Nov.
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SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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Biology:
Label information on 2 specimens of this species attributing them to Quorn (FR) and Oodlawirra (EA) is questionable as these localities are well outside the otherwise known range of occurrence.
Author:
Not yet available
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