1412 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



Leaves oval; phyllaries acute, mostly apiculate. 



31. V. barbinervis. 

 Leaves not densely pilosulous along the costa beneath. 



Leaves elliptic or oblong-elliptic, 1.5 to 3 cm. wide; achenes 



pubescent 32. V. triflosculosa. 



Leaves ovate or elliptic, 4.5 to 6 cm. wide; achenes glabrous or 

 glandular 33. V. heydeana. 



1. Vernonia salvinae Hemsl. Biol. Centr. Amer. Bot. 2: 73. pi. 4^- 1881. 

 Leiboldia salvinae Gleason, Bull. N. Y. Bot. Gard. 4: 162. 1906. 

 Chiapas. Guatemala; type from Las Nubes, Cerro de Zunil. 



Shrubby (?); branchlets lanate or tomentose, glabrescent; petioles 1 to 4 cm. 

 long; leaf blades obovate, or oblanceolate, 10 to 20 cm. long, 4 to 7.5 cm. wide, 

 acuminate, serrulate or .serrate; heads few, on peduncles 1 to 6.5 cm. long; 

 involucre 13 to 18 mm. high, the phyllaries with indurate base and broader, ovate 

 or deltoid, spreading, herbaceous apex, puberulent or glabrate; heads violet- 

 purple, 3 to 5 cm. wide; pappus tawny. 



2. Vernonia mexicana Less. Linnaea 6: 680. 1831. 



Leiboldia mexicana Gleason, Bull. N. Y. Bot. Gard. 4: 163. 1906. 



Veracruz; type from Cuesta Grande de Chiconquiaco. 



Shrub; branches cinerous-tomentose; leaf blades obovate, 20 cm. long, short- 

 acuminate, thinly gray-tomentose beneath; involucre 2 cm. high, 3 cm. wide, the 

 phyllaries glabrous, the outer with spreading rounded herbaceous tips. (Descrip- 

 tion compiled.) 



3. Vernonia callilepis Gleason, N. Amer. Fl. 33: 81. 1922. 



Known only from the type locality, La Liberia, Michoacdn or Guerrero. 



Shrubby, 1.5 meters high; stem densely griseous-pilose; leaves short-petioled, 

 the blades elliptic or oval, 14 to 21 cm. long, 5.5 to 7.5 cm. wide, acute at both 

 ends, serrate, griseous-pilose beneath; heads few, 2.5 cm. high, the pedicels 5 cm. 

 long; involucre 2 cm. high, the outer phyllaries linear-lanceolate, foliaceous, 

 acuminate, spreading, the inner with rounded, membranous purple tips; pappus 

 brownish. 



4. Vernonia arctioides Less. Linnaea 6: 400. 1831. 



Diazeuxis ? scrrata D. Don, Trans. Linn. Soc. 16: 254. 1830. Not V. serrata 

 Less. 1829. 



Vernonia leiboldiana Schlecht. Linnaea 19: 742. 1847. 



Leiboldia ovata Schlecht. Linnaea 19: 742. 1847, as synonym. 



Leiboldia arctioides Schlecht. Linnaea 19: 743. 1847, as synonym. 



Leiboldia leiboldiana Gleason, Bull. N. Y. Bot. Gard. 4: 163. 1906. 



Leiboldia serrata Gleason, Bull. N. Y. Bot. Gard. 4: 164. 1906. 



Veracruz and Puebla; type from Cuesta Grande de Chiconquiaco. 



Suffrutescent, 1 to 2 meters high, the stout angled stem cinereous-tomentose; 

 petioles about 5 mm. long; leaf blades obovate, 11 to 24 cm. long, 5 to 12 cm. 

 wide, acute, sharply serrate; heads few, in close clusters; involucre 12 to 18 mm. 

 high, the phyllaries lanceolate to linear-lanceolate, acuminate, cuspidate, densely 

 tomentose or glabrescent; flowers purple; pappus white. 

 5. Vernonia alamani DC. Prodr. 5: 61. 1836. 



Morelos to Oaxaca; type from Mexico, without definite locality. 



Suffrutescent (?), 1 to 2 meters high; stem densely cinereous-puberulous; 

 leaf blades eUiptic-lanceolate to elliptic-oblong, 9 to 14 cm. long, 2 to 7 cm. 

 wide, tapering to each end, subentire, tomentose-puberulous on the veins beneath 

 and gland-dotted; involucre 15 to 20 mm. high, glabrous, the i^hyllaries bearing 

 mucros 2 to 4 mm. long. 



