Comprehensive Description
provided by North American Flora
Vernonia angustata Gleason, Bull. Torrey Club 40: 309. 1913
Vernonia sublanata angustata Gleason, Bull. N. Y. Bot. Gard. 4: 177. 1906.
Stems herbaceous, slender, puberulent or thinly pubescent, sparingly branched above; leaf-blades thin, flat, spreading, narrowly oblong with parallel sides, 3-5 cm. long, 4-8 mm. wide, obtuse or rounded, mucronate, entire, acute at the base, thinly pubescent above, thinly gray-tomentulose and resinous-dotted beneath, one-nerved; petioles 1-2 mm. long; cymes few, widely spreading or horizontal, simple or sparingly branched, bearing each 2-7 heads separated by internodes 1-2 cm. long, depressed or gently curved between the heads; bracteal leaves like the cauline but gradually reduced in size, the upper only 1 cm. long; heads about 18flowered; involucre broadly campanulate, 6-7 mm. high; scales loosely and irregularly imbricate, strigose-pubescent especially at the base and apex, thinly resinous-dotted, acuminate or sharply acute, the outer lanceolate, the inner narrowly oblong; achenes pubescent, 2 mm. long; pappus white, the bristles 6 mm., the scales 0.9 mm. long.
Type locality: Santiago, Cuba. Distribution: Cuba.
- bibliographic citation
- Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY
Comprehensive Description
provided by North American Flora
Vernonia gnaphaliifolia A. Rich, in vSagra, Hist Cuba 11: 34. 1850.
Vernonia arborescens Griseb. Cat. PI. Cub. 144. 1866. Not V. arbcrescens Sw. 1806. Vernonia sublanata Gleason, Bull. N. Y. Bot. Gard. 4: 177. 1906. Vernonia crassinervia Wright; Gleason. Bull. N. Y. Bot. Gard. 4: 180. 1906. Vernonia gnaphaliifolia platyphylla Gleason, Bull. Torrey Club 46: 238. 1919.
Stems herbaceous or suflruticose, 1 m. high or less, slender, thinly pubescent; leaf-blades broadly elliptic to oblong-obovate or oblong-lanceolate, 3-5 cm. long, 1-2 cm. wide or rarely narrower, acute or obtuse, entire or undulate, usually somewhat revolute, narrowed to an acute or obtuse base, rugose and papillose-hirsute above, or scabrous with the persistent hair-bases, closely gray-pubescent, resinous beneath the hairs, and veiny beneath deaf-blades flat, broadly elliptic and tomentose beneath in the variety) ; petioles 3-4 mm. long; inflorescence divaricately branched, the cymes lax, 5-15 cm. long, somewhat crowded in the upper axils, bearing 3-6 heads; bracteal leaves oblong, the upper equaling the involucre, the lower twice as long; heads 1-2 cm. apart, about 21 -flowered; involucre hemispheric, 7 mm. high; scales loosely and irregularly imbricate, narrowly lance-oblong, sharply acute, green with a scarious margin, villous below, becoming glabrate at the middle and puberulent at the apex; achenes densely pubescent, 3 mm. long; pappus white or very pale-brown, the bristles 5 mm., the scales 0.7 mm. long.
Type locality: Near Canasi, Cuba
Distribution: Cuba.
- bibliographic citation
- Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY