ParT 1, 1922] CARDUACEAE: VERNONIEAE 75 
long, 4 cm. wide, abruptly acuminate, remotely denticulate with subulate or spinulose teeth, 
obtuse or subacute at base, glabrous above, minutely puberulent beneath; veins prominent, 
reticulate; cymes terminal and lateral, spreading, unbranched, 15-20 cm. long, very leafy, 
bearing 6-10 heads; bracteal leaves resembling the cauline in shape, or varying to broadly 
oblong-elliptic, the upper gradually reduced to half the size of the cauline; heads 34-47- 
flowered; involucre hemispheric or broadly campanulate, 8-9 mm. high; scales imbricate 
only at base, the outer linear-lanceolate, the middle broadly ovate-oblong, the inner linear- 
oblong, and all terminated by an erect, spreading, or somewhat reflexed, linear, spinulose- 
serrulate tip; achenes dark-brown to nearly black; pappus pale-tawny, the bristles 8 mm., 
the scales 0.8 mm. long. 
TYPE LOCALITY: Vicinity of Sumidero, Pinar del Rio, Cuba. 
DISTRIBUTION: Cuba. 
55. Vernonia Wrightii Schultz-Bip. Jour. Bot. 1: 234. 1863. 
Vernonia arborescens Wrightii Maza, Anal. Soc. Esp. Hist. Nat. 19: 268. 1890. 
Vernonia leptoclada Gleason, Bull. N. Y. Bot. Gard. 4: 183. 1906. Not V. leptoclada Schultz- 
Bip. 1863. 
Stems shrubby, 1-4 m. high, freely branched above, pubescent; leaf-blades heavy and 
coriaceous, dark-green, spreading or ascending, oblong to broadly elliptic, 5-10 cm. long, 
1.5—3 em. wide, sharply acute or mucronate, revolute, entire or with a few remote spinose teeth, 
rounded to subcordate at base, rugose, scabrous, and shining above, glabrate beneath or 
minutely puberulent, especially on the veins; petioles 1-2 mm. long, pubescent; cymes long 
and spreading, with numerous heads; bracteal leaves resembling the cauline, but gradually 
reduced to 1 cm. long; heads 1—3 cm. apart, about 21-flowered; involucre campanulate, 
6-8 mm. high; scales pubescent and ciliate, the outer ovate, acuminate into mucronate, 
squarrose or erect tips, the inner erect or somewhat spreading, sharply acute or subulate; 
pappus pale-brown, the bristles 6 mm., the broad scales 0.8 mm. long. 
TYPE LOCALITY: Cuba. 
DISTRIBUTION: Eastern Cuba. 
ILLUSTRATION: Ark. Bot. 1315: pl. 1, f. 9. 
56. Vernonia yunquensis Gleason, Bull. N. Y. Bot. Gard. 
4:191. 1906. 
Stems erect, sparingly branched, 1.2 m. tall, very thinly but closely canescent; leaf-blades 
firm, dull-green above, pale beneath, broadly elliptic, 4-5 cm. long, 1.8—2.7 em. wide, obtuse 
or mucronate, entire, obtuse or acute at base, glabrous, glandular-punctate and somewhat 
rugose above, closely and densely gray-tomentose with prominently reticulate veins beneath; 
heads about 5, sessile or nearly so in a terminal capitate cluster, about 34-flowered; involucre 
campanulate, 7 mm. high; scales closely and regularly imbricate in several series, red or purple, 
gray-tomentose on the back, acute or subacute and mucronate, the outer broadly ovate, the 
inner ovate-lanceolate to lanceolate; achenes hirsute with appressed hairs; pappus nearly 
white, the bristles flattened, 4.5 mm. long, the scales 0.9-1 mm. long. 
TYPE LOCALITY: El Yunque mountain, Baracoa, Cuba. 
DISTRIBUTION: Cuba. 
ILLUSTRATION: Ark. Bot. 131: pl. 3, f. 6. 
57. Vernonia segregata Gleason, Bull. Torrey Club 
A032 7-7 LOIS: 
Stems shrubby, 1—2.5 m. high, closely pubescent to finely tomentulose; leaves numerous, 
crowded, the blades firm, oblong to elliptic-obovate, broadest at or above the middle, 2.5—4 em. 
long, 1-1.5 cm. wide, obtuse or subacute, entire, obtuse or rounded at base, scabrellate and 
resinous above, glabrous and densely resinous beneath and puberulent on the midvein; petioles 
1-2 mm. long; inflorescence terminal, irregular, of several short, simple or sparingly branched 
cymes bearing each 2-8 heads in a terminal subcapitate cluster or at the base of the branches; 
heads 8-flowered; involu¢re campanulate, 3-4 mm. high; scales loosely and irregularly im- 
