ry many and broad ones ; disk yellow ; seeds < 

 cave, not winged but callous-toothed all around the edge and 

 with very small callus at base only, smooth, without pappus 

 or scales, 1 line long, oval ; flowers very many and barely half 

 as high as wide. Grows in water in creeks, etc. Marsh Lake, 

 Sierra Madre Mts., Chihuahua, Mex., 7000 feet alt., in the 

 Tropical Life Zone, Sept.. 1903. 



Verbesina monticola n. sp. 



Tall, erect, 3-4 feet high, slender, paniculately branched, 

 with long internodes, scabrous throughout; leaves opposite, 

 lanceolate, long-acuminate, serrate, 4 inchces long, at base 

 broadly cuneate into a short (6 lines long) marginless petiole, 

 3-nerved, thick; heads short-peduncled, 9 lines high and wide 

 exclusive of the 1-inch-long yellow and narrow rays; scales 

 lanceolate, the outer acuminate, the inner obtuse ; rays sterile 

 and with small squamellae; disk akenes long-silky, with 2 

 stout awnlike long and chaffy squamellae and several shorter 

 and lacerate ones. The plant resembles Helianthus Nuttdlii. 

 Mound Vallev, Sierra Madre Mts., Chihuahua. Mex.. in 

 meadows, at 7000 feet alt.. Sept., 1903, in the Middle Temper- 

 ate Life Zone. L E. Diehl. 



Conyza pulcherrima n. sp. 



Annual, tufted, erect, 1-2 feet high, stems strict and spi- 

 cately flowered above with sessile large heads in the axils of 

 the somewhat reduced leaves; white-floccose throughout, not 

 glutinous ; leaves oblong, appressed, very obtuse, pinnately 

 incised or toothed, about 1 inch long, sessile, soft; heads 3-6 

 lines wide. 3 lines high ; scales oblong, acuminate and beauti- 

 fully laciniate and purple at tip ; akenes smooth except on the 

 sides and midrib ; outer pappus of flat, thin, very short scales. 

 not subulate. Soldier Canon, Sierra Madre Mts., Chihuahua, 

 Mex., Sept., 1903, at 6000 feet alt., in the upper edge of the 

 Lower Temperate Life Zone. 



Hymcnopappus Wislizeni var. setiformis n. var. 



Biennial like the other species; lower leaflets broadly 

 linear or spatulate-linear ; heads turbinate, lemon-yellow; 

 ]iappus of manv setae barely paleaceous below and very nar- 

 row. It differs 'from H. Wislizeni in the pappus and more nar- 

 row heads as well as in the leaves. This is the common Ari- 

 zona form. H Wislizeni has nearly filiform leaflets, broad 



