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Electronic Flora of South Australia species Fact Sheet

Family: Compositae
Picris squarrosa

Citation: Steetz in Lehm., Pl. Preiss. 1:488 (1845).

Synonymy: P. hieracioides L. var. squarrosa (Steetz)Benth., Fl. Aust. 3:678 (1867).

Common name: None

Description:
Biennial or perennial 30-80 cm high, hispid with rigid spine-like hairs, sometimes tubercle-based, with 2-hooked apices; stems erect, sparsely branched, hispid; basal leaves elliptic to narrowly lanceolate, narrowed at the base, acute, 6-22 cm long, 1-3 cm wide, shallowly sinuate-toothed to almost entire, hispidulous to hispid; cauline leaves lanceolate to linear, amplexicaul with rounded auricles, decreasing in size up the stem.

Capitula in a loose corymb; peduncles 3-9 cm long, with several minute bracteoles near the apex; involucre 11-15 mm long, 3-5-seriate; outer bracts loose, spreading to recurved, in 2-4 series, lanceolate, 2-5 mm long, glabrous, grading into the bracteoles; inner bracts 12-18, linear-lanceolate, acurainate, 10-14 mm long, slightly pubescent.

Achene 7-9 mm long, narrowed towards the apex but never filiform-beaked, ribbed, brown to yellowish; pappus bristles cream, mostly 7-9 mm long.

Distribution:  On coastal dunes, alluvium along rivers, and disturbed ground elsewhere.

S.Aust.: EP, MU, SL, SE.   W.Aust.; Vic.

Conservation status: native

Flowering time: July — Dec.


SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: The material here referred to P. squatrosa may include one or more undescribed species; in particular, populations along the Murray appear to represent a distinct entity with smaller leaves and paler involucres. The names P. asperrima Lindley, Edwards' Bot. Reg. Misc. 24:58 (1838) and P. barbarorum Lindley, Edwards' Bot. Reg. Misc. 24:58 (1838) are based on specimens of Picris of this aggregate from Tas. and W.Aust. respectively, and either may be applicable to some of the S. Aust. material.

Author: Not yet available


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