ROBINSON AND GREENMAN, —GENUS VERBESINA. 549 
“+ ++ ++ ++ ++ Stem mostly provided with narrow or broad herbaceous wings: tall 
herbaceous species of the United States. 
= Wings of the achene very narrow or obsolete: leaves ovate, opposite: heads 
rather small and few-flowered. 
49. V. occipenratis, Walt. Fl. Car. 213 (1788); Gray, Syn. Fl. i. 
pt. 2, 287, q. v. for rather extensive synonymy. — Woods, etc., Pennsyl- 
vania to Florida “and Illinois” (doubted). 
= Wings of the meni broad: leaves chiefly alternate: heads rather large, 
ume rously flowered: rays long. 
50. V. HELIANTHOIDES, Michx. Fl. ii. 185; Gray, Syn. Fl. i. pt. 2, 
288. Actinomeris helianthoides, Nutt. Gen. ii. 181; DC. Prodr. v. 575, 
vii. 290, incl. formal vars. Nuttallii and Elliottii. 2A. oppositifolia, DC. 
l. c. vii. 290 (opposite-leaved form). — Open woods, etc., Ohio to Towa, 
Georgia, and Texas; common. 
9. Sauprnetia (Saubinetia, Remy in Gay, Fl. Chil. iv. 284, ex- 
tended). Heads as in the last or smaller: rays present, yellow (rather 
pale in V. boliviana, of uncertain color in V. guatemalensis), short, little 
exserted : leaves oblong or ovate to lanceolate, not lobed (except some- 
times in V, boliviana). 
* Stem wingless: leaves sessile and biauriculate or borne on winged biauriculate 
petioles ; auricles (narrow and sometimes obscure in V. oreopola) herbaceous, 
continuous with the blade, neither deciduous nor decurrent. 
+ Leaves ovate or ovate-lanceolate, narrowed to winged auriculate petioles : 
S. American. 
51. V. porrvrana, Klatt, Ann. Naturh. Hofmus. Wien, ix. 361 (1894). 
V. Bridgesii, Rusby, Mem. Torr. Club, iv. 212 (1895).— Andes of Bo- 
livia, Ouming, near Cochabamba, Bang, no. 974. Rays pale yellow. 
* + Leaves oblong, sessile, more or less auriculate or amplexicaul: Mexican. 
++ Leaves green and glabrous beneath. 
52. V. Netsonu, Rob. & Greenm. Proc. Am. Acad. xxxii. 46. — 
Mountains of Guerrero between Ayusinapa and Petatlan, altitude 1,500 
to 2,100 m., 14 December, 1894, #. W. Nelson, no. 2118. Types in 
herb. Gray and herb. U. S. Nat. Museum. 
++ ++ Leaves pubescent to canescent-tomentose beneath. 
= Involucral scales lanceolate, acuminate. 
53. V. porosmva, Rob. Proc. Am. Acad. xxvii. 175. —San Luis 
Potosi, mesas at Hacienda de Angostura, Pringle, no. 5113. 
