SYNOPSIS OF THE FLORA OF COLORADO. 91 



cave, slightly emarginate-bifid, lower deflexed, deeply 3-cleft, scarce 

 equal in length to the upper, usually bearded ; tube elongated, scarcely 

 ampliate ; sterile filanieut naked. 



Var. TORREYI, Gr. Bot. Mex. Bound., p. 114. (P. Torreyi, Benth. in 

 DC. Prod. 10, p. 324.) Tall, 2-3 high, glaucous; leaves entire, can- 

 line sessile, lanceolate or linear ; panicle elongated, few-flowered ; corolla 

 l'-l' long, somewhat dilated above, throat less bearded or naked; lips, 

 especially the upper, a little longer; bright scarlet. Hall & Harbour, 

 395. Cahou City, Brandegee. Upper Arkansas, Porter. Ute Pass, Coul- 

 ter.. Not common. 



PENTSTEMON GLABER, Pursh. Gr. Rev. I. c., p. 59. Very glabrous ; 

 stems 6'-3 high, usually several from the same root, stont ; leaves fleshy, 

 glaucous, sessile, entire, 2'-4' long, 4 // -9 // wide ; flowers large, showy, in 

 a . thyrsoid panicle, violet-purple, 12 // -15 // long; sepals broadly ovate, 

 submembrauaceous on the margin, obtuse or more or less pointed; corolla 

 bright purple, showy, widely dilated above, the limb shortly 2-lobed 

 with the lobes rounded and spreading equally, bearded in the throat ; 

 anthers loosely hairy, hirsutulous or glabrous, the divaricate cells dehis- 

 cent from the base nearly to the summit, but not expanded ; the sterile 

 filament short-hirsute toward the apex or glabrous. Hall & Harbour, 

 384. Monument Park, Porter. Plains near Denver, Dr. Smith. Com- 

 mon. 



Var. ALPINTJS, Gr. (P. alpinus, Torr.) Dwarf, 4 / -12 / high, more strict, 

 sometimes pruinose-puberulent; sepals from an ovate base or oblong- 

 lanceolate, long acuminate. Parry. " Rocky Mountains on both sides." 

 Hoopes. 



PENTSTEMON CYANANTHUS, Hook. Gr. Rev. 1. c., p. 60. (P. glaber, 

 var. cyananthus, Gr.) Glabrous; stems slender but sometimes stout- 

 l-2 high ; cauline leaves broadly ovate or oblong, acute or acurni, 

 nate, 2 / -4 / long, l'-2' broad ; thyrsoid panicle usually very short, 4' long- 

 sepals ovate-lanceolate with a long attenuated acumiuation ; otherwise 

 as in P. glaber. Platte River, Coulter. 



Var. BRANDEGKEI, Porter. Minutely pubemlent except the peduncles 

 and flowers ; stem stout, erect, 1 J-2 high ; leaves opposite, very entire, 

 thick, coriaceous, veiny, the lower ones spatulate or ovate-lanceolate, 

 narrowed to the base, upper ones much larger, somewhat crowded, cor- 

 date-ovate, sessile, clasping and almost connate, finely ciliate on the mar- 

 gins, 2 / -3 / long, I'-IJ' broad; bracts of the ample thyrse (6' long) similar 

 but smaller; cymes 6-8-flowered ; calyx-segments broad-ovate, with scari- 

 ouserose-deuticulate margins, subulate-acuminate, glabrous; corolla I'-IJ' 

 long, abruptly veiitricose-campaimlate, the upper part and the rounded 

 lobes bright azure blue, paler or white beneath, slightly hairy in the 

 throat, smooth within ; sterile filament scantily bearded under the dilated 

 apex; capsule ovoid, acute. Sierra Mojado, Brandegee. 



PENTSTEMON FREMONTI, Gr. Gr. Rev. I. c., p. 60. Pruinose puber- 

 uleut, a span or more high ; lower leaves spatulate, cauline lanceolate, 

 sessile; panicle strict, spike-form, naked, cymules approximate, many- 

 flowered, very short-peduucled ; sepals oblong-ovate, acute, membra- 

 nous on the margin ; corolla 9" long, narrowly funnel-form, scarcely 

 bilabiate ; anthers sparingly hirsute ; sterile filament dilated and bearded 

 at the apex. 



Var. PARRYI, Gr. King's Rep. vol. 5, p. 218. Stem slender, 1- 

 2 high ; leaves lanceolate or ovate-lanceolate, 2' long, 4 // -9 // wide ; 

 panicle few-many-flowered, more or less interrupted, with the pedun- 



