376 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
long, the tube and throat 12 to 13 mm. long, the throat slightly inflated, flattened 
and 2-ridged within ventrally, the 2 posterior lobes 4 to 5 mm. long, united and 
arched two-thirds their length, projecting, the 3 anterior lobes 4 to 5 mm. long, 
united at base, spreading; corolla externally glandular-puberulent, within slightly 
pubescent over the bases of the anterior lobes, glabrous elsewhere, sky-blue, within 
violet at base of lobes, pale within the throat, on anterior side with violet lines, one 
of these extending medianly into each lobe (not seen fresh); anther sacs widely diva- 
ricate, 1 mm. long, oblong, glabrous, distinct, with short line of contact, opening 
throughout, the suture minutely ciliolate; sterile filament included, flat, scarcely 
enlarged distally, bearded nearly throughout (densely so distally) with golden-yellow 
hairs on the posterior face; capsule 7 mm. long, ovate, acuminate, glabrous; seeds 1.5 
to 1.7 mm. long, irregularly quadrangular, curved, the angles sharp, not winged, the 
surface very minutely alveolate-reticulate, blackish, slightly glistening. 
Type in the herbarium of the New York Botanical Garden, collected on open 
mesas and gravelly hillsides at Pagosa Springs, Colorado, in flower, July 2, 1917, by 
E. Bethel. 
Open sagebrush (?) mesas and slopes, frequently gravelly, at altitudes of 2,000 to 
2,200 meters; Upper Sonoran Zone; flowering from June to late July. Valley of 
San Juan River in southwestern Colorado. 
Cororapo: Archuleta: Pagosa Springs, Bethel (D, Y). La Plata: Bayfield, Bethel 
(D, Y). Montezuma: Lone Mesa (U); Mancos, Baker, Earle & Tracy 27 (F, 
M, JU, Y). 
79. Penstemon abietinus Pennell, sp. nov. 
Stems tufted, much branched, prostrate and ascending, spreading, less than 5 cm, 
tall, from a thick woody caudex, although often with long woody prostrate stems, 
densely grayish-puberulent with reflexed hairs; leaves thickened, dull pale green 
above and beneath, not veined, sparsely puberulent above or glabrate, entire, all 
cauline, the blades sessile, linear, acute, the largest mostly 1 to 1.2 cm. long, 0.8 to 
1.2 mm. wide; thyrsus narrow (flowers seeming axillary), composed of few (1 to 4) 
fascicles, each consisting of 2 axillary shortened branches, each of these bearing 
usually but a single flower; sepals 4 to 5 mm. long, lanceolate-attenuate, acuminate, 
not ribbed, proximally with slightly erose, expanded, scarious margins, slightly 
glandular-puberulent; corolla 12 to 15 mm. long, the tube and throat 8 to 10 mm. 
long, the throat scarcely inflated, flattened and 2-ridged within ventrally, the 2 
posterior lobes 4 to 5 mm. long, united and arched one-third to two-fifths their 
length, projecting, the 3 anterior lobes 4 to 5 mm. long, united at base, spreading; 
corolla externally glandular-puberulent, within slightly pubescent over bases of 
the anterior lobes, glabrous elsewhere, blue (not seen fresh); anther sacs widely 
divaricate, 1 mm. long, oblong-ovate, glabrous, distinct,:with short line of contact, 
opening throughout, the suture nearly glabrous; sterile filament included, flat, 
scarcely enlarged distally, densely bearded nearly throughout with golden-yellow 
hairs on the posterior face; capsule not seen. 
Type in the U. 8. National Herbarium, no. 237297, collected at Ireland Ranch, 
head of Salina Canyon, Utah, altitude 2,400 meters, in flower, June 15, 1894, by 
Marcus E. Jones (no. 5440; distributed as P. caespitosus Nutt.). Isotype in 
herbarium of New York Botanical Garden. 
Probably Submontane Zone. 
Uran: Sevier: Ireland Ranch, head of Salina Canyon, Jones 5440 (F, M, R, U, Y); 
Salina Experiment Station, Fishlake Forest, Eggleston 11138 (U). 
80. Penstemon whippleanus A. Gray. 
Penstemon glaucus stenosepalus A, Gray, Proc. Amer. Acad. 6: 70. 1862. ‘Rocky 
Mountains, about Pikes Peak, Clear Creek, &c., Dr. James in herb. Torr., Dr 
