1580 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



24. Verbesina otophylla Blake, Contr. U. S. Nat. Herb. 22: 638. 1924. 

 Known only from the type locality, Hacienda Buena Vista, 20 miles east of 



Abasolo, Tamaulipas. 



Shrub; branches strigillose; leaves alternate, lanceolate or elliptic-lanceolate, 

 7.5 to 10.5 cm. long, 1 to 1.3 cm. wide, acuminate, sessile and narrowly auriculate- 

 clasping at base, serrate, strigillose above, practically glabrous beneath; heads 5, 

 cymose, the pedicels 6 to 20 mm. long; involucre 6 to 7 mm. high, slightly graduate, 

 the phyllaries oblong, obtuse to acutish, appressed; rays 4.5 mm. long. "Jara." 



25. Verbesina potosina Robinson, Proc. Amer. Acad. 27: 175. 1892. 

 San Luis Potosi; type from Hacienda de Angostura. 



Suffrutescent (?) ; stem simple below the inflorescence, spreading-pilose, very 

 leaf}'; leaves alternate, lanceolate or lance-oblong, 5.5 to 16 cm. long, 8 to 20 mm. 

 wide, acuminate, sessile and auriculate-clasping, entire or slightly denticulate, 

 grayish green above, densely canescent-tomentose beneath; heads several or 

 manj', cymose-panicled, the pedicels 1.5 to 6.5 cm. long; involucre about 6 mm. 

 high, scarcely graduate, the phyllaries lanceolate, acuminate; rays about 2 mm. 

 long. 



26. Verbesina oreopola Robins. & Greenm. Proc. Amer. Acad. 34: 550. 1899. 

 Known only from the type locality, San Luis PotosC. 



Shrub; branchlets hirsutulous; leaves alternate, lanceolate or narrowly lance- 

 oblong, 5 to 15 cm. long, 1 to 2.5 cm. wide, attenuate, narrowed to the sessile, 

 usually biauriculate base, smoothish above, rather sparselj' pilosulous to canes- 

 cent-tomentose beneath, obscurely serrulate; heads several in a flattish cymose 

 panicle; involucre 4 mm. high, about 2-seriate, the phyllaries ovate or oblong- 

 ovate, obtusish; pales with short, erect or incurved mucros; raj's 5 mm. long. 



27. Verbesina auriculata DC. Prodr. 5: 617. 1836. 

 Oaxaca; type from Tehuantepec. 



Shrubby; stem finely velvety; leaves alternate, elliptic-oval, 18 to 27.5 cm. 

 long, 5 to 11 cm. wide, acuminate, attenuate to the obtusely auriculate sessile 

 base, dentate, scabrous above, sordid-tomentulose beneath; heads numerous, 

 cymose, with small rays; involucre 2 or 3-seriate, the phyllaries broadly ovate, 

 acute or ol^tuse; pales subulate-tipped, stiff", nearly glabrous. 



28. Verbesina acapulcensis Robins. & Greenm. Proc. Amer. Acad. 34: 551. 

 1899. 



Known only from the type locality, vicinity of Acapulco, Guerrero. 



Stem puberulent, winged by the decurrent leaf bases; leaves alternate; petioles 

 short, winged; blades ovate or oval-ovate, 10 to 22 cm. long, 2.5 to 12 cm. wide, 

 acuminate at each end, callous-denticulate, scabrous above, sordidly subto- 

 mentose-pilosulous beneath; heads numerous, short-pediceled; involucre 5 to 

 6 mm. high, the phyllaries oblong-ovate, acute; raj's about 4 mm. long. 



29. Verbesina xanthochlora Robins. & Greenm. Proc. Amer. Acad. 34: 

 551. 1899. 



Known only from the type locality, Atlixco, Puebla. 



Herb (?) ; stem canescent-puberulent, narrowly winged by the decurrent leaf 

 bases; leaves mostly opposite, ovate-oblong, about 12 cm. long, 5 czn. wide, 

 obtuse, subentire or dentate-serrate, green on both sides, strigillose; heads short- 

 pediceled, cymose; involucre 5 mm. high, the phyllaries suborbicular, with 

 obtuse or rounded, squarrose, herbaceous tips; rays about 5 mm. long. 



30. Verbesina mollis H. B. K. Nov. Gen. & Sp. 4: 203. 1820. 



Verbesina sericea Kunth & Bouche, "Ind. Sem. Hort. Berol. 1848: 14. 1848;" 



Ann. Sci. Nat. III. Bot. 11: 228. 1849. 

 Vernonia exaltata Hort.; Kunth & Bouche, Ann. Sci. Nat. IIL Bot. 11: 228. 



1849, as synonym. 



