PENNELL—SOROPHULARIACEAE OF THE ROCKY MOUNTAINS. 343 
name, because in Pursh’s Flora first accompanied by a description, must be main- 
tained as there applied. 
Penstemon cristatus Nutt. (in Fraser’s Cat. 1813, nomen nudum) Gen. Pl. 2: 52. 1818. 
“Hab. On arid denudated argillaceous hills from the confluence of Teeton River 
and the Missouri [South Dakota] to the Mountains.” Type seen in herbarium of 
the Academy of Natural Sciences of Philadelphia. The original name of Nuttall, 
which in justice should be restored. 
Chelone erianthera Steud. Nom. Bot. 186. 1820-4. 
Chelone cristata Spreng. Syst. Veg. 2: 813. 1825. 
Dry sandy plains and rocky hills, in the open, at altitudes of 1,400 to 2,400 meters; 
Submontane (Subboreal) Zone; flowering from early June to early July. Northern 
high plains, upper Missouri drainage south to southeastern Wyoming. 
Souru Daxora: Custer: Bull Springs, Rydberg 919, in part (U). Meade: Elk Canyon, 
Rydberg 919, in part (U, Y); Fort Meade(U). Stanley: Saddle Pass, Over 6116 (U). 
Wromina: Albany: Dale Creek; Laramie, Pennell 5877 (Y); Tie Siding. Carbon: 
Fort Steele, Tweedy 4304 (U, Y); Saratoga (F); T B Ranch (M). Converse: 
Douglas, Bates (E). Fremont: Shoshone Agency, S. R. Martin (P). Laramie: 
Near Cheyenne, Greene (Y); Islay (U). Sheridan: Between Sheridan and Buf- 
falo, Tweedy 3418 (Y). Weston: Newcastle, J. M. Bates (U). Yellowstone 
National Park: Gardiner River, Tweedy 865 (F, U). 
15a. Penstemon eriantherus saliens (Rydb.) Pennell. 
Penstemon saliens Rydb. Mem. N. Y. Bot. Gard. 1: 344. 1900. “Montana: 
Columbia Falls, Mrs. J. J. Kennedy, 58.’’ Type seen in herbarium of the New York 
Botanical Garden. 
The prevalent form in western Montana, extending into the Yellowstone National 
Park. 
Wyromina: Yellowstone National Park: Mammoth Hot Springs, Scheuber 331 (Y). 
16. Penstemon ophianthus Pennell, sp. nov. 
Stems several, 10 to 30 cm. tall, from a branched caudex, below densely puberulent 
with reflexed hairs, above puberulent with spreading gland-tipped hairs; leaves dull 
green above and beneath, entire or slightly sinuate-dentate, somewhat cinereous- 
puberulent to glabrate, those at the base of the stem with lanceolate, obtuse to acutish 
blades 3 to 5 cm. long, these gradually narrowed into margined petioles 2 to 3 cm. 
long, the stem leaves sessile (opposite leaves not meeting around stem), acutish, the 
largest mostly 6 to 7 cm. long, 0.8 to 1 cm. wide; thyrsus narrow, mostly over one- 
half the height of the plant, composed of 4 to 10 fascicles, each consisting of 2 short 
axillary branches, their pedicels about equaling the peduncle; sepals 7 to 9 mm. long, 
lanceolate, acuminate, obscurely or not ribbed, entire, slightly scarious-margined 
proximally, glandular-puberulent; corolla 15 to 20 mm. long, the tube and throat 11 
to 15 mm. long, the throat inflated and rounded ventrally, the 2 posterior lobes 4 to 5 
mm. long, united and arched one-third their length, projecting forward, the 3 ante- 
rior lobes 4 to 5 mm. long, united at base, spreading; corolla externally glandular- 
puberulent, within lanate with long (white) hairs over the bases of the anterior lobes, 
bluish (not seen fresh; “red-lilac’’ according to Payson 347); anther sacs widely 
divaricate, 0.8 mm. long, ovate, glabrous, distinct, with long line of contact, this 
equaling the length of either sac, opening throughout, the suture nearly glabrous; 
sterile filament exserted, flat, scarcely enlarged distally, slightly decurved at the 
apex, bearded on the posterior face, especially distally, with long yellow hairs; cap- 
sule 10 to 11 mm. long, ovate, acuminate, glabrous; seeds 3 to 3.5 mm. long, irregu- 
larly lanceolate-curved in outline, the angles prominent, the surface finely alveolate- 
reticulate, dark brown. 
