19"] TRELEASE— THE DESERT GROUP XOLIXEvE. 419 



Leaves 6-7 mm. wide, smooth-edged. Inflorescence 

 with rather narrow divisions scarcely 10 cm. long and 

 lower branchlets nearly half as long. Fruit depressed, 

 4X6 mm. Seed 2 yC ^ mm. 

 Southeastern Colorado to northeastern Xew Mexico. The north- 

 ernmost species of the group. 



Specimens examined : Colorado. Between the Purgatory and 

 Apishipa rivers, north of Trinidad (Greene, Jan., 1880, — -the type). 

 New Mexico. San ^Miguel County (Braiidcgee, 1879). Lincoln 

 County (Jl'ooton, 6j6, 1897). 



Lower panicle divisions considerably shorter than the sub- 

 tending "bracts, with short stiff spreading branchlets. 



N. cespitifera Trelease. 



Leaves 6-10 mm. wide, with dorsal as well as 

 marginal roughening. Inflorescence very rough from 

 compound tussocks, with narrow divisions 10 cm. 

 long and lower branchlets scarcely one-third as long. 

 Fruit nearly orbicular, about 5 mm. in diameter. 

 Seed ? 



Xorth-central [Mexico. On the margin of the range of Dasy- 

 lirioii ccdrosanuui. 



Specimens examined : Coahuila. Battlefield of Buena Vista 

 {Wislizenus, ^08, 1847, — the type). High dry lands near Saltillo 

 (Gregg, 81, 1847). 



Inflorescence (.as usual in the genus) essentially smooth. Lower 

 bracts triangular, scarcely equaling the panicle divisions. Pedicels 

 slender; Acaulescent with one exception. 



N. Palmeri Watson, Proc. Amer. Acad. 14: 248. 1879. 



Beaiicariiea Palmeri Baker, Journ. Linn. Soc, Bot. 18 : 235. 

 1880. 



Leaves 8-10 mm. wide, serrulate-scabrous. In- 

 florescence with narrow divisions 15 cm. long and 

 rather stifif ascending lower branchlets scarcely one 

 ^ fourth as long. Fruit depressed, 4X5 mm. Seed 

 3 mm. in diameter. 

 Lower California. (Jverlapping the region of N. Bigelovii and 



