ROBINSON AND GREENMAN. — GENUS VERBESINA. 551 



++ ++ Leaves permanently sordid-tomentose beneath : Bolivian. 



57. V. Soratse, Sch. Bip. ined. Branches terete, pubescent, nar- 

 rowly and irregularly winged by the decurreut bases of the winged petioles : 

 leaves alternate, ovate, acuminate, crenate-serrulate, rugose, scabrous- 

 tomentose above, paler and soft sordid-tomentose beneath, 6 to 10 cm. 

 long, 2.5 to 5 cm. broad, pinnately veined, rather abruptly narrowed to 

 a winged and somewhat crisped petiolar portion ( 1 to 2.5 cm. long) : 

 corymbs much branched ; branches and pedicels covered with loose sordid 

 woolly pubescence; involucre campanulate, 7 mm. in diameter: rays 

 about 10, oblong, pale yellow?, 7 mm. long: achenes of the disk-flowers 

 (immature) linear, attenuate below ; pappus of 2 unequal slender awns. 

 — Linnaea, xxxiv. 528, & Bull. Soc. Bot. France, xii. 79 ; Britton, Bull. 

 Torr. Club, xix. 150 (all mere mentions). — Sorata, Bolivia, Mando7i, 

 no. 55, and in the same locality at 2,400 m. altitude, February, 1886, 

 Dr. H. H. Rusby, no. 1722. 



-1- H- luvolucral scales obovate-oblong, rounded at the apex : pales villous at the 



summit: Chilian. 



58. V. Saubinetia, Klatt, 1. c. xx. 92. SavMnetia heliantJioides, 

 Remy in Gay Fl. Chil. iv. 284, t. 49. —Near Coquimbo, Chili. 



1- -I- -1- Involucral scales broad, ovate : pales glabrous or nearly so. 

 ++ Involucral scales acute : leaves acuminate, tomentulos^ beneath, alternate. 



59. V. acapulcensis. Stem tomentulose, partially winged by the 

 cuneate decurrent herbaceous bases of the leaves : leaves alternate, ovate, 

 cuspidate-denticulate, acuminate at each end, green, scabrous, and lepi- 

 dote above, paler and sordid-tomentulose beneath, 1 to 1.8 dm. long, 2.5 

 to 7.5 cm. broad, pinnately veined ; petioles relatively short, winged ; 

 heads 35 to 40, short-pedicelled in a rather dense leafless corymb, sub- 

 globose, 1.2 to 1.8 cm. in diameter; involucral bracts 2-seriate, ovate, 

 acute, scarcely herbaceous, somewhat stramineous, striate, ciliate : rays 

 about 10, oblong, scarcely exserted : achenes of the disk-flowers about 

 4 mm. long, narrowly to rather broadly winged, often tuberculate above; 

 awns subequal. — Vicinity of Acapulco, Mexico, Dr. Edward Palmer^ 

 no. 162 (coll. of 1894-1895). Type in herb. Gray. 



++ ++ Involucral scales obtuse : leaves obtuse, barely puberulent beneath, opposite, 

 the uppermost alternate. 



60. V. xanthochlora. Herbage yellowish green : stem canescent- 

 puberulent, narrowly winged by the green decurrent bases of the leaves ; 

 these mostly opposite, ovate-oblong, obtuse, subentire or denticulate, 

 green and concolorous on both sides, appressed-puberulent under a lens : 



