Comprehensive Description
(
الإنجليزية
)
المقدمة من North American Flora
Vernonia pluvialis Gleason, Bull. Torrey Club 40: 312. 1913
Baccharis Myrsinites Griseb. Fl. Brit. W. Ind. 366, in part. 1861. Not B. Myrsinites Pers. 1807. Vernonia proclivis Gleason, Bull. Torrey Club 40: 312. 1913. Vernonia reducta Gleason, Bull. Torrey Club 40: 313. 1913.
Stems shrubby, erect or trailing, 5-20 dm. long, branched above, glabrate or thinly pubescent; leaf-blades elliptic-oblong to oblong-ovate or subrhomboid, broadest near or above the middle, 3-8 cm. long, 1-3 cm. wide, acute or acuminate, entire and frequently somewhat revolute, gradually narrowed to an acute or obtuse base, minutely puberulent and glandularpunctate or resinous on both sides, sessile or on petioles f l-5 mm. long; inflorescence of several short, few -headed cymes terminating the stem and upper branches and forming a compact leafy panicle; bracteal leaves barely exceeding the heads, ovate to ovate-lanceolate; heads crowded in clusters of 2-7, not secund, 5-8-flowered ; involucre narrowly companulate or subcylindric, 5-7 mm. high; scales coriaceous, glabrate or puberulent, closely imbricate in several series, the outer ovate-triangular, acute or apiculate, the inner oblong, obtuse or rounded; achenes densely hirsute; pappus pale-brown or tawny, the bristles flat and twisted, 4-5 mm. long, the scales irregular, 0.4-1 mm. long.
Type locality: Blue Mountain Peak. Jamaica. Distribution: Higher mountains of Jamaica.
- الاقتباس الببليوغرافي
- Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY