ROBINSON AND GREENMAN.— GENUS VERBESINA. 551 
++ ++ Leaves permanently sordid-tomentose beneath: Bolivian. 
57. V. Soratee, Scu. Bre. ined. Branches terete, pubescent, nar- 
rowly and irregularly winged by the decurrent 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. 
— Linnea, xxxiv. 528, & Bull. Soc. Bot. France, xii. 79; Britton, Bull. 
Torr. Club, xix. 150 (all mere mentions). — Sorata, Bolivia, Mandon, 
no. 55, and in the same locality at 2,400 m. altitude, February, 1886, 
Dr. H. H. Rusby, no. 1722. 
+ + Involucral scales obovate-oblong, rounded at the apex: pales villous at the 
summit: Chilian. 
58. V. Sauprnerta, Klatt, 1. c. xx. 92. Saubinetia helianthoides, 
Remy in Gay Fl. Chil. iv. 284, t. 49. —Near Coquimbo, Chili. 
-e + Involucal scales broad, ovate: pales glabrous or hails so. 
++ Involucral scales acute: leaves acuminate, tomentulose 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 em. 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 em. 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, 
ho. 162 (coll. of 1894-1895). Type in herb. Gray. 
*+ +» Involucral scales obtuse: leaves obtuse, barely puberulent beneath, opposite, 
the uppermost alternate. 
xanthochlora. Herbage yellowish green: 
ens narrowly winged by the green decurrent bases of the leaves; 
these mostly opposite, ovate-oblong, obtuse, subentire or denticulate, 
gteen and concolorous on both sides, appressed-puberulent under a lens: 
stem canescent- 
