Family: Asteraceae
Calotis multicaulis
Citation:
Druce, Rep. Botl Soc. Exch. Club Br. Isl. 1916:611 (1917). Common_name: Woollyheaded burr-daisy.
Synonymy: Goniopogon multicaule Turcz., Bull. Soc. Nat. Mosc. 24:174 (1851).
, Calotis multicaulis Common name: None
Description:
Annual herb to 50 cm high; stems erect or ascending, branched, sparsely pubescent; radical leaves petiolate, oblanceolate, 2-4.5 cm long, soon withering; cauline leaves sessile, cuneate to oblanceolate, 1.5-5 cm long, 2-10 mm wide, narrow at the base, dentate or lobed in the distal portion, sparsely hairy.
Capitula in loose leafy terminal cymes of 2-8, c. 1.5 cm diam.; receptacle conical, 0.8-2 mm diam., naked; involucral bracts 15-20, narrowly lanceolate, acute, 2-3.5 mm long, pubescent; ray florets 12-20, 2-seriate; ligules oblong, 3-4 mm long, white or bluish.
Achenes 1.5-2 mm long, woolly with tangled branched hairs; wings broad, upcurved, c. 1 mm long, woolly on the margins; pappus of 12-20 unequal awns 1-2.5 mm long, spreading, curved, flexible, minutely barbellate, dark; disk florets sterile.
Distribution:
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On silly sands and loams, mainly on floodplains and dry stream beds.
S.Aust.: NW, LE, NU, GT, EP. W.Aust.
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Conservation status:
native
Flowering time: May — Oct.
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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:
Closely related to the following species, and separated from it by the chromosome base number of x = 4 (x = 5 in C. plumulifera) which prevents gene flow between the two species. Their ranges are adjacent in this State but do not overlap.
Author:
Not yet available
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