PENNELL—SCROPHULARIACEAE OF THE ROCKY MOUNTAINS. 327 
Corolla nearly tubular, the posterior lobes projecting; uni- 
formly dense, very dark, 1.5 to 2 mm. long; meses lower, tee 
spreading partially or throughout, forming mats; plants more 
or less puberulent <V. Caespitosi. 
Corolla 25 to 30 mm. long, lavender-blue or chocolate-purple, lanose 
within over bases of the strongly projecting anterior lobes. 
XVI. Whippleani 
Anther sacs densely comose; seeds slightly wing-angled; corolla throat strongly 
flattened anteriorly and ridged within; inflorescence by reduction seemingly 
racemose; leaves coriaceous; plants shrubby; woody below. DASANTHERA 
(Raf.) Pennell ! XVII. Fruticosi. 
Anther sacs opening partially by short confluent proximal slits, the anthers horse- 
shoe-shaped; seeds pale gray, minutely honeycombed. Plants shrubby at 
base; corolla widely inflated, glabrous without and within; sterile filament 
glabrous. SACCANTHERA Ben 
Corolla scarlet-red, the throat aay tubular, deeply cova the posterior lobe 
projecting, the anterior ones strongly descending-recurv 
ars Bridgesiani. 
Corolla violet or blue, the throat inflated, shallowly 2-lipped, the lobes all spreading. 
XIX. Heterophylii. 
I. CENTRANTHIFOLII. 
Stem glabrous; leaves a or nearly so; sepals triangular-ovate, acute to acumi- 
nate, 3 to 5 mm. lon 1. P. eatoni. 
Stem and leaves finely vabeibion or puberulent; sepals triangular-ovate to lanceolate, 
acute or more frequently long-acuminate, 3 to 7 mm. long. 
la. P. eatoni undosus. 
II. BARBATI. 
Anther sacs not lanate, more spreading; corolla throat relatively broad. 
Corolla within the throat glabrous anteriorly or with a few white hairs; sepals mosily 
3 to 5 mm. long 2. P. torreyi. 
— within throat lanate anteriorly with yellow hairs; sepals mostly 5 to 9 mm. 
long. 
Stem and leaves glabrous; stem leave slinear or nearly so...... .3. P. barbatus. 
Stem and leaves puberulent; stem leaves broader than linear. 
3a. P. barbatus puberulus. 
Anther sacs more or less lanate, slightly thicker and more erect; corolla cmertorens we 
4. P. trichander. 
: III. UTAHENSES. 
A single species, . ...6. P. utahensis. 
re IV. ALBIDI. 
Single species... 6. P. albidus. 
V. FREMONTIANI. 
Plants 40 to 80 cm. tall; basal and lower leaves obovate, emarginate, the upper leaves 
oblong-ovate; calyx lobes broadly ovate, abruptly short-caudate, with relatively 
Conspicuous, erose, scarious margins; corolla 23 to 25 mm. long; sterile filament 
Rearly or quite glabrous 7. P. jonesii. 
* Dasanthera Raf. Amer. Month. Mag. 2: 267. 1818. Type species, Gerardia fruticosa 
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