212 HOT A NY. 



an inch long, purplish-white, the limb beardless; beard of the sterile fila- 

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



Pentstemon ceistatus, Nutt. (Watson, Bot King, p. 219). — Agua 

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



Penis temon Jamesii, Benth. (Gray, I. c. p. G7). — Puberulent, 4 to 12 

 niches high ; leaves linear-lanceolate, often denticulate, rigid ; cymelets 

 3- to 4 -flowered in a spicate panicle ; sepals viscid-puberulent ; corolla 1 

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

 sterile filaments less bearded than in P. rristatus. — Santa Fe - , N. Mex., June 

 1874, Rothrock (2). 



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

 rado, 1873, Wolf. 



Pentstemon glaucus, Grab., var stenosepalus, Gray (Watson, /. 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 confeetus, Dough, var c^eruleo-puepueeus, Gray (Wat- 

 son, I. 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^tus, Gray (Watson, 1. c. p. 455). — Mineral Hill, 

 Nevada, 1871, 1872, Watson's Rep. 



Chionophtla Jamesii, Benth. — Low, glabrous, from a thick rootstock; 

 stem scapiform, 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 



