212 BOTANY. 



;m inch long, purplish white, the limb beardless; beard of th<- sterile fila- 

 ment rather short, somewhat interrupted. — Colorado, 1873, Wolf (292). 



I'iaistkmon CRI8TATUS, Nun (Watson, Bol Bang, p. 219). — Agua 

 Azul. X. Mex., July, 1874, Rothrock (129). 



Penistemon Jamesii, Benth. (Gray, I c. p. 67). — Puberulent, 4 to 12 

 inches high; leaves linear-lanceolate, often denticulate, rig-id; cymelets 

 3- to 4-flowered in a spicate panicle; Bepals viscid-puberulent ; corolla I 

 inch or more long, pale purple, abruptly campanulate above, the lip and 

 sterile filaments less bearded than in P. cristaim. — Santa Fe*, N. Mex., June 

 1874, Rothrock (2). 



Pentstemon humilis, Nutt. (Watson, I. c. p. 220). — South Park, Colo- 

 rado, 1873, Wolf. 



Pentstemon glaucus, Grab., var stenosepalus, Gray (Watson, I. c. 

 p. 221).— Utah, 1871, 1872, Watson's Rep. ; mountains of Colorado, 1873, 

 Wolf (297, 298, 301). 



Pentstemon Hallii, Gray (Proc. Am. Acad. 6, p. 70).— Stems 3 to 5 

 inches high, numerous, glabrous except the very minutely glandular inflores- 

 cence ; leaves entire, pale, linear-spatulate or linear-attenuate at base ; 

 raceme simple, 4-10-flowered with short pedicels ; sepals ovate or oblong 

 with scarious and often erose margins ; corolla deep blue, about 1 inch long, 

 ventricose-campanulate above the short base, the lips short; the sterile 

 filament short-bearded. -South Park, Colorado, July, 1873, Wolf (303). 

 Var. Aeizonicus, Gray, Mount Graham, Arizona, at 9,250 feet elevation, 

 August, 1874, Rothrock (426). 



Pentstemon confertus, Dougl., var ceruleo-purpureus, Gray (Wat- 

 son, /. c. p. 221).— Nevada and Utah, 1871, 1872, Watson's Rep ; South 

 Park, Colorado, 1873, Wolf (293,294). 



Pentstemon deustus, Dougl. (Watson, /. c. p. 221).— Nevada, 1871, 

 1872, Watson's Rep. 



Pentstemon l^etus, Gray | Watson, 1. c. p. 455). — Mineral Hill, 

 Nevada, 1871, 1872, Watson's Rep. 



Chionopiiila Jamesii, Benth. — Low. glabrous, from a thick rootstock: 

 stem Bcapiform, 1 to 4 inches high, with a pair of leaves above the middle. 

 terminated by a crowded spike of flowers; radical leaves tapering into the 



