102 POLEMOXIALES 



5. Cryptanthe. 769. 



Nutlets unlike, 3 muricate and 1 smooth and shining. 



1. C. crassisepala. 



Nutlets alike, all smooth and shining. 2. C. fendleri. 



1. Cryptanthe crassisepala (T. & G.) Greene. 



In dry soil in the northwestern part of the state. Belmont; Deuel 

 County; Hat Creek Basin; Thedford. 



2. Cryptanthe fendleri (A. Gray.) Greene. 



On high dry plains and in the foot-hills and bad-lands, in the north- 

 western part of the state. Banner County; Harrison; Hat Creek 

 Basin; Sheridan County; Thedford. 



6. Oreocarya. 770. 



Corolla tube about equal to the calyx lobes, not exserted. 



Nutlets smooth, polished, brown. 1. O. suffruticosa. 



Nutlets rough, tubercled or wrinkled. 



Inflorescense a broad, open, round-topped thyrsus; its branches 

 usually again branched. 

 Plants light yellowish-green, nutlets winged, regularly wrinkled. 



2. O. hispidissima. 

 Plants dark green; nutlets merely acute angled, irregularly 



wrinkled. 3. O. thyrsiflora. 



Inflorescense a narrow or spike-like thyrsus, if more open the 

 branches simple. 

 Plants rough-hairy, over 1.5 dm. high; corolla 6-10 mm. broad. 



4. O. glomerata. 

 Plants silvery appressed-pubescent; less than 1.5 dm. high; 

 corolla 4-6 mm. high. 5. O. sericea. 



Corolla tube much longer than the calyx lobes, long exsertea. 



6. O. fulvocanescens. 



1. Oreocarya suffruticosa (Torr.) Greene. 



Common in dry soil in the western part of the state. Banner County; 

 Belmont; Box Butte County; Deuel County; Hat Creek Basin; Plum- 

 mer Ford; Sioux County. 



2. Oreocarya hispidissima (Torr.) Gray. 

 Nebraska according to Rydberg's Flora of Colorado. 



3. Oreocarya thyrsiflora Greene. 



On sandy hillsides in western Nebraska, according to Rydberg's Flora 

 of Colorado. 



4. Oreocarya glomerata (Pursh.) Greene. 



A xerophyte of the table-lands and foot-hills of the western part of 

 the state. Belmont; Deuel County; Scotts Bluff County; War Bonnet 

 Canon. 



6. Oreocarya fulvocanescens (A. Grey.) Greene. 



In dry soil in the western part of the state. Alliance; Deuel County; 



Kimball County. 



6. Oreocarya fulvocanescens (A. Gray.) Greene. 



In canons in the Hat Creek Basin. War Bonnet Canon. 



