74 NORTH AMERICAN FLORA [VoLUME 33 
51. Vernonia inaequiserrata Schultz-Bip. Jour. Bot. 
12325 “S65: 
Vernonia rubricaulis Griseb. Mem. Am. Acad. II. 8: 511. 1862. Not V. rubricaulis Humb. & 
Bonpl. 1810. 
Stems apparently herbaceous, 1-2 m. high, thinly cinerous-tomentose; leaf-blades firm, 
narrowly oblong to elliptic-oblong, 6-9 cm. long, 1—2.5 cm. wide, acute or short-acuminate, 
irregularly serrate to subentire, narrowed or subobtuse at base, rugose and nearly glabrous 
above, prominently reticulate and cinerous-tomentose beneath; cymes spreading, terminal 
and subterminal; lower bracteal leaves resembling the cauline, gradually reduced above, the 
upper twice as long as the 13-flowered heads; involucre campanulate-cylindric, 8 mm. high; 
scales closely imbricate, appressed, thinly arachnoid or pubescent and frequently densely 
glandular near the tip, the outer subacute and mucronate, the inner obtuse, rounded, or mu- 
cronulate; achenes 3.5 mm. long; pappus-bristles sordid-purple or tawny, 6 mm. long, the 
outer scales white, 1 mm. long. 
TYPE LOCALITY: Cuba. 
DISTRIBUTION: Cuba. 
ILLUSTRATION: Ark. Bot. 1315: pl. 1, f. 4. 
52. Vernonia Valenzuelana A. Rich. in Sagra, Hist. Cuba 
115336 A850: 
Vernonia rigida Valenzuelana Griseb. Cat. Pl. Cub. 144. 1866. 
Stems woody, 10-15 dm. high, thinly pubescent, freely branched; leaf-blades rigid, 
coriaceous, narrowly oblong to elliptic-oblong, 8-10 cm. long, 8-17 mm. wide, acute, entire, 
or remotely denticulate with spinulose teeth, somewhat revolute, truncate to rounded or 
subcordate at base, rugose, but glabrous and shining above, puberulent and prominently 
reticulately veined beneath; cymes numerous, erect or ascending, sparingly branched; bracteal 
leaves resembling the cauline, but gradually reduced, the uppermost 1 cm. long; heads about 
21-flowered; involucre campanulate-cylindric, 8-9 mm. high; scales all appressed, closely 
and regularly imbricate, arachnoid-ciliate, pubescent, the outer ovate, the inner ovate-lanceo- 
late, acute and cuspidate; achenes glabrous; pappus nearly white, the bristles 6 mm. long, 
the scales erect, white, narrowly linear, 1-1.2 mm. long. 
TYPE LOCALITY: Vuelta de Abajo, Cuba. 
DISTRIBUTION: Cuba. 
ILLUSTRATION: Ark. Bot. 131: pl. 1, f. 2. 
53. Vernonia purpurata Gleason, Bull. Torrey Club 40: 322. 1913. 
Stems shrubby, 2—2.5 m. tall, thinly tomentose below, becoming densely so in the in- 
florescence; leaf-blades heavy, rigid, coriaceous, elliptic-oblong, 5-7 cm. long, 2-3 cm. wide, 
obtuse or subacute, entire or irregularly repand, obtuse or rounded at base, strongly rugose, 
but shining and essentially glabrous above, minutely puberulent on the veins beneath; petioles 
2-4 mm. long; inflorescence small, irregular, composed of several short leafy cymes bearing 
each 4-10 heads; bracteal leaves narrowly oblong or oblong-linear, not present below many 
heads; heads secund, or aggregated at the tips of the cymes, 8-flowered; involucre narrowly 
cylindric, 6 mm. high; scales closely imbricate, appressed, sharply acute, thinly strigose, the 
outer ovate-triangular, the inner microscopically spinulose-serrulate, purple-brown at the 
exposed tip; pappus pale yellow-brown, the bristles 7 mm. long, the scales narrowly linear, 
1.2—- 1.4mm. long. 
TYPE LOCALITY: Jiquarito mountain, Sierra Maestro, Oriente, Cuba. 
DISTRIBUTION: Eastern Cuba.° 
54. Vernonia aronifolia Gleason, Bull. Torrey Club 
AD: 323° 193. 
Stems suffrutescent or shrubby, stout, freely branched, 12-15 dm. high, finely and thinly 
tomentose, especially above and in the axils; leaf-blades thin but firm, obovate-oblong, 8 cm, 
