82 NORTH AMERICAN FLORA [VOLUME 33 
78. Vernonia dictyophlebia Gleason, Bull. N. Y. Bot. 
Gard. 4: 203. 1906. 
Stems shrubby, erect, 1-2 m. high, puberulent or thinly tomentose; leaf-blades firm, 
spreading, ovate or ovate-elliptic, 6-10 cm. long, 3-6 cm. wide, broadest below the middle, 
acute or subacuminate, sharply and irregularly serrate, obtuse to broadly rounded or sub- 
cordate at base, scabrous above, subtomentose beneath, the veins very prominently reticulate; 
inflorescence depressed-hemispheric, 1-2 dm. wide; heads many-flowered, 15-20 mm. wide, 
on peduncles 2-4 em. long; involucre broadly campanulate, 12-15 mm. high; scales loosely 
but regularly imbricate in several series, glabrous, purple or purplish-green, the outer spreading 
or reflexed, the inner erect or loose, narrowly oblong, subacute to rounded, with an awn 1 mi. 
long or shorter; achenes 4 mm. long, densely glandular; pappus white, the bristles 8 mm. 
long, the scales subulate, 1 mm. long or more. 
TYPE LOCALITY: Michoacan. ! 
DISTRIBUTION: Southern Mexico, from Guanajuato to Oaxaca. 
79. Vernonia Alamani DC. Prodr. 5:61. 1836. 
? Vernonia inuloides D. C. Prodr.5:62. 1836. 
Cacalia Alamani Kuntze, Rev. Gen. 969. 1891. 
Stems shrubby, erect, 1-2 m. high, branched above, glabrate; leaf-blades firm, dull-green, 
elliptic or elliptic-oblong, 9-14 cm. long, 3-7 em. wide, broadest at the middle and tapering 
regularly to each end, finely serrulate to subentire, scabrellate above, thinly puberulent and 
sometimes resinous beneath, veinlets obscurely reticulate; heads few, large, many-flowered, 
on peduncles 2-8 em. long; involucre broadly campanulate to depressed-hemispheric, 15-20 
mm. high; scales erect or somewhat spreading, oblong with parallel sides, short-acuminate, 
acute. or rarely rounded at the apex, terminated by a mucro 2 mm. long, glabrous or scabrellate, 
the outer reflexed or spreading, the inner loose, erect; achenes 4 mm. long, thinly glandular in 
the furrows; pappus white, the bristles 8 mm. long, the scales subulate, 1.1-1.4 mm. long. 
TYPE LOCALITY: Mexico. 
DISTRIBUTION: Southern Mexico, from Guanajuato to Oaxaca. 
80. Vernonia Conzattii B. L. Robinson, Proc. Am. Acad. 
44:615. 1909. 
Stems herbaceous, erect, thinly tomentose, corymbosely branched above; leaf-blades 
firm, ovate-oblong or elliptic to ovate-lanceolate, 5-7 cm. long, 2-3 cm. wide, acuminate, 
obscurely serrulate or entire, acute or obtuse at the base, short-petioled, rugose and scabrous 
above, paler, densely pubescent or subtomentose, and resinous-dotted beneath; veins re- 
ticulate; inflorescence umbelliform, depressed-hemispheric, 8-20 cm. wide; peduncles 12-30 
mm. long, tomentose, with subulate bracteoles; heads about 34-flowered, 12 mm. in diameter; 
involucre broadly campanulate, 8-10 mm. high, the scales imbricate in several series, purple, 
mucronate, ciliate, the outer lanceolate to lance-linear, the middle oblong, mostly rounded at 
the cuspidate apex, the inner subacute; achenes glabrate, somewhat glandular; pappus nearly 
white, the bristles 6 mm. long, the scales narrowly linear, 1 mm. long. 
TyPE LOCALITY: Santa Ines del Monte, Zimatlan, Oaxaca, alt. 2700 meters. 
DISTRIBUTION: Oaxaca. 
81. Vernonia corymbiformis DC. Prodr. 5:62. 1836. 
Cacalia corymbiformis Kuntze, Rev. Gen. 969. 1891. 
Stems shrubby, erect, divaricately branched above, glabrous or puberulent; leaf-blades 
thin, bright-green, elliptic, 8-14 cm. long, 3.5-6 cm. wide, acute or subacuminate, entire, 
narrowed at the base, almost glabrous on both sides, resinous beneath, prominently veined, 
on petioles 1-2 cm. long; upper leaves similar but smaller; inflorescence depressed-hemispheric, 
3 dm. wide; heads about 26-flowered; involucre obconic-campanulate, 8 mm. high, the scales 
loosely imbricate, straight, erect or the outer spreading, purple-tinged, glabrous, narrowly 
