Calotis R.Br.
Involucre usually hemispherical. Cypselas angular, sometimes winged, mostly as long as broad. Barbellate awns 2–several Calotis
Pappus of rigid awns alternating with an equal number of scales
Leaves linear-lanceolate or oblong; basal leaves up to 8 cm long, distally serrate, occasionally pinnatifid; cauline leaves entire. Heads numerous. Involucre hemispherical, 5–10 mm diam., on axillary peduncles; bracts lanceolate to ovate, entire. Rays c. 10 mm long, white. Cypselas reddish-brown, c. 2 mm long, broad, flattened; pappus scales 2, fringed at their free edges; awns usually 2 but sometimes 1 or 3. Hairy perennial up to 80 cm high. Widespread. Open forests grasslands and roadsides. Usually clay or loam soils. Fl. all the year. White Daisy Burr Calotis dentex
Leaves cuneate or spathulate, distally toothed. Basal leaves with slender petioles; cauline leaves up to 4 cm long and 20 mm wide, narrow-ovate to linear. Rays numerous, up to 10 mm long, white to lilac. Cypselas reddish-brown, up to 1.5 mm long, cuneate, flattened; awns usually 2 but occasionally 3–4, c. 3 mm long; pappus scales infolded distally so as to appear entire. Erect to prostrate perennial up to 60 cm high, with stiff hairs. Widespread. Open forests grasslands and roadsides. Fl. most of the year Calotis cuneifolia