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Genus Picris Family Asteraceae

Description: Annual to perennial taprooted herbs; with 2-hooked rigid non-glandular hairs and/or unhooked spines, bases not enlarged; stems terete, usually solitary, branched above.

Leaves basal and cauline, alternate, flat, margins ± toothed to pinnatisect.

Heads in loose terminal corymbs, few to numerous, cylindrical; involucral bracts herbaceous, ovate to linear, in many rows, ± equal, graduated or outer much smaller; receptacle flat, naked, pitted. Florets all ligulate, numerous, bisexual, fertile; ligule linear. Anthers sagittate at base, apical appendage minute.

Achenes terete, usually ribbed, transversely wrinkled, tapered at apex; pappus of plumose bristles, in 1 row, with a few shorter outer barbellate bristles.

Distribution and occurrence: World: c. 60 species, Europe, Asia, Africa & Australia. Australia: c. 10–15 species (1 species naturalized), all States except N.T.

Text by L. Murray & E. A. Brown
Taxon concept:

 Key to the species 
1Midrib on adaxial side of ar least some of the outer involucral bracts with very long, curled hairs, length of longest hairs more than 3.5 mm long2
Midrib of all involucral bracts naked or hairs straight and not longer than 0.3–3 mm long3
2Hairs on midrib in more than one line, mass of hairs covering the whole of the involucrumPicris evae
Hairs on midrib in a single line
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Picris barbarorum
3Outer involucral bracts in 2–3 rows, rarely longest outer bracts longer than 2/3 of length of innermost bracts, usually marked shorter; all bracts straight; outer bracts upright to slightly squarrose, not as wide as inner bractsPicris angustifolia
Outer involucral bracts in 2–4 rows, usually many outer longer than 2/3 the length of innermost bracts, often almost as long as the innermost bracts; outer bracts straight or recurved, upright to distinctly squarrose, not as wide or wider than the inner bracts
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4Achenes 3.9–5.2 mm long; fruting heads 0.9–1.3 cm longPicris squarrosa
Achenes 5–8 mm long; fruiting heads 1.3–1.5 cm long
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5Involucral bracts all naked, outer bracts slightly squarrose, straightPicris eichleri
Involucral bracts always with a single line of short and strong to slender hairs along midrib on abaxial side of bracts, outer bracts straight and upright to conspicuously squarrose and recurved
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Picris burbidgei

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