22 BOTANY. 
an inch long, purplish-white, the limb beardless; beard of the sterile fila- 
ment rather short, somewhat interrupted.—Colorado, 1873, Wolf (292). 
PentstemMon cristatus, Nutt. (Watson, Bot King, p. 219)—Agua 
Azul, N. Mex., July, 1874, Rothrock (129). 
Pesistemon JameEsit, Benth. (Gray, /. ¢. p. 67).—Puberulent, 4 to 12 
inches high; leaves linear-lanceolate, often denticulate, rigid ; cymelets 
3- to 4-flowered in a spicate panicle; sepals viscid-puberulent; corolla | 
inch or more long, pale purple, abruptly campanulate above, the lip and 
sterile filaments less bearded than in P. cristatus.—Santa Fé, N. Mex., June 
1874, Rothrock (2). 
PeNnTSTEMON HuMILIs, Nutt. (Watson, /. c. p. 220).—South Park, Colo- 
rado, 1873, Wolf. 
PEeNTSTEMON @LAUCcUS, Grah., var sT us, Gray (Watson, /. c¢. 
p- 221).—Utah, 1871, 1872, Watson’s Rep.; mountains of Colorado, 1873, 
Wolf (297, 298, 301). 
Pentstemon Hatin, 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. Arizonicus, Gray, Mount Graham, Arizona, at 9,250 feet elevation, 
August, 1874, Rothrock (426). 
PeNTSTEMON CONFERTUS, Dougl., var CHRULEO-PURPUREUS, Gray (Wat- 
son, J. ¢. p. 221).—Nevada and Utah, 1871, 1872, Watson’s Rep ; South 
Park, Colorado, 1873, Wolf (293, 294). 
PentTsTemon DEustus, Dougl. (Watson, J. ¢. p. 221).—Nevada, 1871, 
1872, Watson’s Rep. 
PentsTeMoN LaTus, Gray (Watson, J. c. p. 455).—Mineral Hill, 
Nevada, 1871, 1872, Watson’s Rep. 
CuionopHita Jamesu, 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 
