1416 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



23. Vernonia steetzii Schultz Bip. in Seem. Bot. Voy. Herald 297. 1856. 

 Eremosis steetzii Gleason, Bull. N. Y. Bot. Gard. 4: 230. 1906. 

 Chihuahua; type from the Sierra Madre of northwestern Mexico. 

 Shrubby, sordid-puberulous; petioles 2 to 6 mm. long; leaf blades 5 to 10 cm. 



long, 3 to 5.5 cm. wide, scabridulous above, hispidulous on the venation beneath; 

 involucre brownish white or slightly purplish-tinged, essentially glabrous; achenes 

 densely appressed-pilose. 



24. Vernonia salicifolia (DC.) Schultz Bip. Linnaea 20: 507. 1847. 

 Monosis salicifolia DC. Prodr. 5: 77. 1836. 



Vernonia uniflora Schultz Bip. Linnaea 20: 506. 1847. 



Eremosis salicifolia Gleason, Bull. N. Y. Bot. Gard. 4: 231. 1906. 



Puebla to Oaxaca; type from near "Guchinapa" and Cuernavaca. 



Stem tomentulose or tomentose; leaf blades elliptic or narrowly oblong-eUiptic, 

 4 to 8.5 cm. long, 1 to 2 cm. wide, densely gland-dotted on both sides, loosely 

 arachnoid-pilose, glabrescent; involucre purplish; achenes densely appressed- 

 pilose. "Ahuitule" {Urbina). 



25. Vernonia p aliens Schultz Bip. Pollichia 18-19: 161. 1861. 

 Eremosis pallens Gleason, Bull. N. Y. Bot. Gard. 4: 228. 1906. 

 Eremosis leiophylla Gleason, Bull. N. Y. Bot. Gard. 4: 231. 1906. 

 Vernonia leiophylla Blake, Contr. Gray Herb. n. ser. 52: 18. 1917. 

 Morelos and Michoacdn or Guerrero; type from Mexico, without definite 



locality. 



Shrubby, 3 to 5 meters high, the branches glabrate; petioles 3 to 4 mm. long; 

 leaf blades lanceolate to elliptic, 4 to 8.5 cm. long, 1.1 to 2.5 cm. wide, acute, 

 entire or obscurely serrulate, glabrous or nearly so on both sides; phyllaries 

 whitish, brownish, or purplish, acute, ciliate; achenes sparsely short-villous. 



26. Vernonia leiocarpa DC. Prodr. 5: 34. 1836. 



Eremosis leiocarpa Gleason, Bull. N. Y. Bot. Gard. 4: 232. 1906. 



"Southern Mexico"; type from Mexico, without definite locality. Guatemala. 



Shrubby, densely sordid or cinereous-tomentose; petioles about 1.5 cm. long; 

 leaf blades elliptic-oblong or elliptic-ovate, 8 to 14 cm. long, 2 to 6 cm. wide, 

 greenish or grayish above, densely and softly cinereous or sordid-tomentose 

 beneath; phyllaries densely sordid-tomentose on their exposed portions. "Palito 

 de negro" (Guatemala); "palo de asma" (El Salvador). 



Employed in El Salvador as a remedy for asthma. 



27. Vernonia melanocarpa (Gleason) Blake, Contr. Gray Herb. n. ser. 52: 18. 

 1917. 



Eremosis melanocarpa Gleason, Bull. N. Y. Bot. Gard. 4: 232. 1906. 



Veracruz to Guatemala; type from Chupadera, Guatemala. 



Stem densely puberulous, subglabrate; petioles 1.4 to 2.2 cm. long; leaf blades 

 oval or elliptic-ovate, 6 to 10.5 cm. long, 2.2 to 5 cm. wide; phyllaries colorate 

 only at apex, sordid-pilose at base and apex and on margin. 



28. Vernonia durangensis Blake, Contr. U. S. Nat. Herb. 22: 587. 1924. 

 Eremosis ovata Gleason, Bull. Torrey Club 40: 331. 1913. Not V. ovata 



Less. 1829. 

 Vernonia gleasoni Blake, Contr. Gray Herb. n. ser. 52: 17. 1917. Not V. glea- 



sonii Ekman, 1914. 

 Known only from the type locality, San Ram6n, Durango. 

 Shrubby, the stem tomentulose; petioles about 1.2 cm. long; leaf blades ovate 

 or elliptic-ovate, 6.8 to 9 cm. long, 3.5 to 5 cm. wide, densely canescent-tomentose 

 beneath, the veins about 10 pairs, prominent beneath; heads (3 or) 4-flowered, 

 forming a broad panicle; involucre 5.5 mm. high, the phyllaries tomentulose at 

 apex; achenes pilose. 



