Larkdaisy

Plants 1–5+ dm. Stems usually erect. Leaf blades obovate to lanceolate, 2–6(–8+) cm × 8–25(–40+) mm. Involucres 8–15+ × 8–15+ mm. Phyllaries 30–50+ in 4–8+ series, glabrous or sparsely tomentulose. Florets 30–60+. Cypselae 1–2.5+ mm; pappi stramineous, 1–3+ mm. 2n = 32, 64.

Centratherum violaceum (Schrank) Gleason
Spixia violacea Schrank, PI. Rar. Hort. Monac. pi. 80. 1821. Ampht-rrphis intermedia Link & Otto, Ic. PI. Sel. 65. 1822. Centralherum intermedium Less. Linnaea 4: 320. 1829. Baccharoides violaceum Kuntze, Rev. Gen. 320. 1891.
Stems. erect, with ascending branches, 3-5 dm. high, stout, somewhat angled, puberulent; leaves 3-4 cm. long, 1-1.8 cm. wide, the blades thin, ovate to oblong-ovate, obtuse or subacute, deeply crenate-serrate, glabrous above, puberulent beneath, abruptly arcuately narrowed at base into a long margined petiole; heads on terminal peduncles; outer involucral scales 5-9, 15-25 mm. long, foliaceous, resembling the foliage leaves in shape and texture; intermediate scales scarious, ovate to ovate-lanceolate, acuminate into a prominent awn, glabrous except some arachnoid tomentum near the base of the awn; inner scales rounded to subacute at the apex, ciliate with short glandular hairs and somewhat glandular on the back; achenes obovoid, prominently ribbed.
Type locality: Brazil.
Distribution: Martinique and Guadeloupe; also in northern South America.

Centratherum muticum (H.B.K.) Less. Linnaea 4: 320. 1829
Ampherephis mutica H.B.K. Nov. Gen. & Sp. 4: 32. 1818. Baccharoides muticum Kuntze, Rev. Gen. 320. 1891.
Stems thinly pubescent below, cinereous and branching above, 5-8 dm. high; leaf-blades
rather thick and firm, narrowly ovate or ovate-oblong, 15-20 mm. long, 5-7 mm. wide, sharply
serrate, gradually attenuate at base, puberulent on both sides, resinous beneath; outer involu-
cral scales equaling or a little longer than the heads, the intermediate acute or with short
awns, the inner obtuse to rounded, not glandular-ciliate, glabrous below, glandular on the
back toward the apex.
Type locality: Colombia.
Distribution: Mexico and Central America; also in South America.

Centratherum punctatum Cass. Diet. Sci. Xat. 7: 384. 1817
Ampherephis arislata H.B.K. Nov. Gen. & Sp. 4: 32, 1818. Baccharoides punctatum Kuntze, Rev. Gen. 320. 1891.
Stems erect, 2-5 dm. high, puberulent to tomentulose, especially above; leaf-blades firm. lanceolate to oblong-laneeolate, 2-3 cm. long, 4-7 mm. wide, acute, serrulate or entire, attenuate at base into a margined petiole, thinly pubescent and glandular-punctate on both sides; outer involucral scales foliaceous, narrowly oblanceolate, serrulate or entire, little exceeding the head; intermediate scales pubescent near the tip, abruptly narrowed into an awn 2-4 mm. long; inner scales obtuse or acute, spinulose-denticulate, mucronate or short-awned.
Type locality: Isthmus of Panama. Distribution: Panama; also in Colombia.

Centratherum punctatum, also known by its common name Brazilian bachelor's button is a species of flowering plant from the genus Centratherum.