Puerto Rico Longshoot

Vernonia borinquensis Urban, Symb. Ant. 3: 390. 1903
Vernonia borinquensis Stahlii Urban, Symb. Ant. 3: 391. 1903.
Vernonia borinquensis resinosa Gleason, Bull. Torrey Club 46: 236. 1919.
Vernonia borinquensis hirsula Gleason, Bull. Torrey Club 46: 236. 1919. Stems shrubby, climbing, 5-30 dm. high, branching above, striate, slender, glabrous or nearly so; leaves spreading or somewhat reflexed, the blades firm, ovate to oblong-lanceolate, 3-6 cm. long, 13-35 mm. wide, acuminate, entire, somewhat revolute, rounded or obtuse at the base, minutely and sparsely papillose-pubescent and becoming scabrous above, pubescent with short curved hairs or occasionally sericeous, and usually resinous-dotted beneath; petioles 2-5 mm. long; inflorescence lax and open, of numerous, divaricately spreading, freely branched, flexuous cymes 5-15 cm. long; bracteal leaves resembling the cauline in shape, the lower 2.5-3.5 cm. long, reduced above, the upper equaling or barely exceeding the involucre; heads 1-2 cm. apart, about 18-flowered; involucre 6 mm. high, turbinate-campanulate; scales loosely imbricate, the outer somewhat spreading, acuminate, glabrous or nearly so, the inner sparsely strigose-pubescent ; achenes 1.5-2 mm. long, densely pubescent or rarely glabrous; pappus tawny, the bristles 5 mm., the scales 0.5-1.1 mm. long.
Type locality: Mt. Guvuy, near Utuado, Porto Rico. Distribution: Porto Rico.