PaRT 1, 1922] CARDUACEAE: VERNONIEAE 87 
heads all peduncled or a few sessile, about 21-flowered; involucre campanulate, 6 mm. high; 
scales appressed, irregularly imbricate, white-tomentose and resinous on the back, glabrous 
near the purple margin, ciliate or arachnoid, rounded or obtuse to subacute and apiculate 
or mucronate; achenes pubescent and resinous; pappus purple, the bristles 6 mm., the scales 
0.8 mm. long. 
TYPE LOCALITY: Kerrville, Texas. 
DISTRIBUTION: ‘Texas. 
97. Vernonia Reverchonii Gleason, Bull. N. Y. Bot. Gard. 
4: 208. 1906. 
Stems erect, 5 dm. high, simple to the inflorescence, glabrous or sparsely pubescent; 
leaves numerous, crowded, the blades firm, spreading, narrowly oblong-lanceolate, 5—8 cm. 
long, 4-7 mm. wide, gradually tapering to the acute and mucronate tip, entire, flat or slightly 
revolute, narrowed at base, minutely scabrous above, thinly pubescent to glabrous and pitted 
beneath, l-nerved with faint lateral veinlets; inflorescence flattened, compact; heads about 
21-flowered; involucre broadly campanulate to hemispheric, 6-8 mm. high; scales appressed, 
oblong, rounded and cuspidate to subacuminate, tomentose except near the margin, densely 
arachnoid-ciliate; achenes minutely pubescent, resinous in the furrows; pappus tawny-purple, 
the bristles 7 mm. long, the conspicuous scales 1-1.3 mm. long. 
TYPE LOCALITY: Seymour, Texas. 
DISTRIBUTION: Texas. 
98. Vernonia angustifolia Michx. Fl. Bor. Am. 2:94. 1803. 
Chrysocoma graminifolia Walt. Fl. Car. 196. 1788. 
Liatris umbellata Bertol. Nov. Comm. Bonon. 8: 79. 1846. 
Vernonia graminifolia Trel.; Brann. & Cov. Rep. ole Surv. Ark. 18881: 189. Jl 1891. 
Cacalia graminifolia Kuntze, Rev. Gen. 968. N 1891. 
Stems erect, simple to the inflorescence, 5-10 dm. high, glabrous, pubescent, or short- 
hirsute; leaves crowded, narrowly linear, 5-10 cm. long, revolute, 1-nerved, or the lower flat, 
narrowly oblong, and 5—10 mm. wide, scabrous above, sparsely pubescent beneath, especially 
on the midvein, sparsely glandular-dotted; inflorescence ample, rather compact, 5—30 cm. wide; 
heads 11-21-flowered; involucre campanulate, 6 mm. high; scales usually red or purple, 
appressed or slightly spreading, glabrous or puberulent on the back, ciliate or entire, the outer 
triangular-subulate, the inner lance-ovate, subacute to acuminate; achenes pubescent on the 
ribs, resinous and dark-dotted in the furrows, 3 mm. long; pappus usually purple, the bristles 
6.5 mm., the narrow scales 0.5—0.7 mm. long. 
TYPE LocaLity: Carolina. ae 
DISTRIBUTION: North Carolina to Florida and Mississippi. 
ILLUSTRATION: Nov. Comm. Bonon. 8: pl. 4 
99. Vernonia dissimilis Gleason, Bull. N. Y. Bot. 
Gard. 4: 224. 1906. 
Stems stout, erect, 8-11 dm. high, glabrous above, pubescent or short-hirsute below; 
leaf-blades firm, sessile, narrowly lanceolate, 10-15 cm. long, 1-2 cm. wide, acuminate at each 
end, sharply serrate, flat, scabrous above, especially near the margin, sparsely pubescent 
beneath, pinnately veined with conspicuous lateral veinlets; inflorescence dense, flattened; 
heads 21-flowered, sessile or short-peduncled; involucre campanulate, 4 mm. high; scales 
closely imbricate in few series, appressed, dark-red, the inner ovate-lanceolate, strongly 
arachnoid-ciliate, puberulent on the back, obtuse or rounded, the outer subacute to sharply 
acute; achenes pubescent on the ribs, somewhat resinous in the furrows, 2.5 mm. long; pappus 
bright-purple, the bristles 6 mm. long, the scales 0.5—0.7 mm. long. 
TYPE LOCALITY: Auburn, Alabama. 
DISTRIBUTION: Alabama. 
100. Vernonia concinna Gleason, Bull. N. Y. Bot. Gard. 
4°°2252, +1906. 
Stems erect, simple, 8 dm. high, glabrous; leaves numerous, the blades thin, spreading, 
oblong-linear or narrowly oblanceolate, flat, acute, entire or minutely denticulate, narrowed 
