PENNELL—SCROPHULARIACEAE OF THE ROCKY MOUNTAINS. 381 
Sepals 8 to 9 mm. long, the margin finely denticulate distally and with 
an acuminate-attentuate tip, this nearly or quite equaling the 
sepal body; corolla 30 mm. long, the posterior lobes projecting; 
leaves lanceolate, the widest 0.9 to 1.1 cm. wide. .85. P. scariosus. 
Sepals 4 to 6 mm. long, the margin coarsely denticulate distally and 
with an acuminate tip, this much shorter than the sepal body; 
corolla 20 mm. long, the posterior lobes apparently more spreading; 
leaves linear-lanceolate, the widest 0.7 to 0.9 em. wide. 
36. P. garrettii. 
Leaves ovate to lanceolate, the cauline ones lanceolate, obtuse to acute, 
the largest ones 3 to 7 cm. long; sepals with obscure narrow scarious 
margin, acute; corolla 15 to 20 mm. long 37. P. cyanocaulis. 
cant sacs opening eh accrme pedicels and sepals glabrous. Corolla 15 
m. long; plant 10 ¢ 38. P. caryi. 
poe: sacs lanate with ae Faldi these mostly much exceeding the width 
Sepals 7 to 10 mm. long, long-acuminate, with broad conspicuous scarious 
margin, slightly puberulent; corolla more widely expanded. 
39. P. strictiformis. 
Sepals 3 to 5 mm. long, obtuse to acute (or short-acuminate), with narrow 
scarious margin, glabrous; corolla less widely expanded. 
Basal leaves and stem (throughout) nearly or quite glabrous, usually not 
or but slightly glaucous; leaves mostly lanceolate, those of the stem 
frequently narrower 40. P. strictus. 
Basal leaves and stem (at base or frequently throughout) puberulent, more 
sasepotagh glaucous; leaves narrower, the basal ones narrowly lanceo- 
te, the cauline ones linear 40a. P. strictus angustus. 
Corolla as ne the throat scarcely exceeding the va diealy long basal tube; 
anther sacs densely lanate with long hairs; sterile filament glabrous; thyrsus 
lax, less secund; pedicels relatively long; herbage more glaucous 
41. P. comarrhenus. 
X. COERULEI. 
Stamens and aris included; anther sacs explanate 
Corolla 40 to 45 mm. long, glabrous within, thie lobes slightly spreading; sterile 
eae: thes closely short-bearded near the apex; capsule yo to mm. long, con- 
spicuously acuminate P. grandiflorus 
Corolla 10 to 25 mm. Jong, the lobes strongly spreading; nae Giainent stroiigly 
bearded toward the apex; capsule 10 to 15 mm. long, acuminate. 
Corolla 15 to 25 mm. long, lanate-pubescent within at base of the anterior lobes 
lavender-pink to lavender-blue; sterile filament very densely bearded. 
Corolla (15-) 20 to 25 mm. long; sterile filament strongly enlarged distally, 
very densely bearded with golden hairs; stem leaves ovate, the upper ones 
acuminate, all firm to somewhat fleshy. 
ovate-acuminate; sterile rpc aan to the apex; basal 
and stem leaves lanceolate to lance-o 
Thyrsus strongly secund, composed oy airy lax fascicles; flowers 
lavender-pink; leaves firm, very glaucous, scarcely vein 
Corolla 20 to 25 mm, long; stem leaves BS to lance-ovate; mg 
tall -- 
Corolla 15 . long; stem leaves narrower; Sethe smaller. 
upests scl: 43a, P secundifiorus lavendulus. 
