540 PROCEEDINGS OF THE AMERICAN ACADEMY. 



oblong, obtusish: llgules about 7, bright yellow, 1.7 cm. long: disk- 

 achenes obovate, upwardly hispidulous ; wings very narrow ; awns two, 

 short. — Tepic, on foothills between Acaponeta and Pedro Paulo, 2 Au- 

 gust, 1897, Dr. J. N. Rose, no. 1948, and by the same collector between 

 Pedro Paulo and San Blascito, 4 August, 1897, no. 3343. Types in herb. 

 U. S. Nat. Museum and herb. Gray. 



■•-*• •<-+ Rays nearly white. Florida species. 



13. V. HETEROPHYLLA, Gray, 1. c. 12 (1883), & Syn. Fl. i. pt. 2, 288 ; 

 Chapm. Fl. S. U. S. ed. 3, 255. Actinonieris heterophylla, Chapm. 

 Bot. Gaz. iii. 6. — Low pine barrens, E. Florida, Chapman, Palmer^ 

 Curtiss, no. 1468% Garher. 



1- -1- Leaves rhombic or deltoid with cuneate petiolar base. 

 ++ Leaves densely canescent-tomentose beneath. 



14. y. CouLTERi, Gray. Leaves rhombic-oblong, finely toothed; 

 blade not at all hastate or deltoid. — Proc. Am. Acad. xix. 13; Hemsl. 

 1. c. iv. 57. V. Ccqy'itaneja, Hemsl. 1. c. ii. 187, in part, not Nees. — 

 S. Mexico, Zimapan, Coulter^ nos. 341, 369. 



*+ ++ Leaves covered with slightly scabrous subappressed pubescence, pale green 

 on both surfaces ; blade subhastate or deltoid. 



15. V. Schaffneri. Erect 1 -several-stemmed perenniaJ, slightly lig- 

 neous at the base : leaves about 3 pairs, opposite, the blade triangular, 

 coarsely crenate-toothed, acutish or obtuse, contracted below into cuneate 

 broadly winged entire petioles half their length; these decurrent upon 

 the stem in herbaceous wings : peduncles long, terminal, terete, wingless, 

 1-2-headed; pedicels relatively short: bracts of the involucre 2-3-seriate, 

 oblong, obtuse, canescent-pubescent about the margins : ligules about 12, 

 oblong, deep yellow, 1.8cm. long: achenes obovate, 7 mm. long, gla- 

 brous ; body black, lucid ; wings of medium breadth, thin, translucent. — 

 Mexico, San Luis Potosi, in sandy ground near the city, September, 

 1876, Schaffner, nos. 258, 301, in part. Parry & Palmer, no. 473. 



Var. exalata. Winged petioles subauriculate at the base not at all 

 decurrent. — AVith the type at San Luis Potosi, Schaffner, no. 301 in 

 part, also in " North Mexico," Parry (1878), no. 26 J in part. 



*+***+ Leaves (yellow-green) papillose-scabrous, rhombic-ovate, shallowly 



serrate-dentate. 



16. V. Capitaneja, Nees, Linnsea, xix. 729 (1847); Hemsl. 1. c. 

 187, in part (only as to pi. Bourgeau). ? F. crocea, Klotzsch in Klatt, 

 1. c. 94 (nomen subnudum). Actinomcris pedunculosa, DC. Prodr. v. 



