512 SCROPHULARIACEZ PENTSTEMON 
‘mostly entire: thyrsus interrupted, leafy below, the clusters several-flower- 
ed: peduncles and pedicels short: sepals lanceolate, gradually acuminate, 
very acute, about 3 lines long, conspicuously ciliate: corolla blue or purple. 
8-10 lines long, funnelform, with a broad tube longer than the calyx, and 
abruptly enlarged throat, the lower lip bearded at base: sterile filament as 
long as the others, bearded with yellowish hairs. Hillsides and plains, 
Muddy Station, John Day Valley Oregon. 
P. acuminatus Doug!l. Lindl. Bot. Reg. t. 1285. Glabrous and more 
or less glaucous: stems stout, 6- 20 inches high: leaves coriaceous, some- 
what cartilaginous-margined, entire; radical and lowest cauline obovate 
or oblong, petioled; middle cauline lanceolate, 2-3 inches long; those sub- 
tending the flowers long-acuminate from a broadly ovate cordate-clasping 
base: thyrsus strict, leafy below, the clusters several-flowered: peduncles 
and pedicels mostly very short: sepals ovate and acute to lanceolate and 
acuminate, 3-5 lines long: corolla lilac or violet, 8-10 lines long, funnelform, 
the throat very gradually enlarged from the broad tube: sterile filament 
usually bearded at the enlarged apex: capsule firm-coriaceous, acute, lon- 
ger than the calyx. Sandy plains, Brit. Columbia to eastern Oregon, Ne- 
vada, Nebrasku and the Saskatchewan. . 
P. miser Gray Syn. Fl. Supp. 441. Pruinose-pubescent and the in- 
floreszence glandular-viscid but not villous: stems 10-18 inches high: radi- 
cal leaves spatulate or obovate; cauline lanceolate, an inch or less long: 
sepals lanceolate, merely acute: corolla violet or bluish, only halfinch long, 
rather tubular than funnelform, the throat little dilated: spreading lobes 
short; base of the lower lip moderately villous; sterile filament with dilated 
and curved tip hardly projecting from the throat densely yellow-bearded 
down one side. Along the Malheur river eastern Oregon. 
P. pruinosus Dougl. Lindl. Bot. Reg. t. 1280. Pruinose- pubescent: 
stems about a foot high: leaves from ovate to oblong, glaucescent, an inch 
or two long; the radical and lowest cauline and also uppermost cauline 
commonly entire; the others acutely and rigidly dentate or denticulate: 
thyrsus virgate, interrupted: peduncles and pedicels short, these and the 
lanceolate attenuate-acuminate sepals viscidiy villous: lower lip of the 
deep blue corolla slightly hairy within. Interior of Oregon and Washing- 
ton. Little known. 
P. ovatus Dougl, Hook. Bot. Mag. t. 2903, puberulent or pubescent: 
stems stout, 2-4 feet high: leaves ovate, the radical and lowest cauline 
slender-petioled, the others sessile, all with more or less cordate base and 
coarsely toothed, the blade 2-4 inches long, bright gene: thyrsus panicu- 
late, the lower peduncles often longer an the clusters: pedicels short, 
glandular: sepals ovate to lanceolate, acute or acuminate, about 2 lines 
long, more or less glandular: corolla bright blue, 8-10 lines long, tubular- 
funnelform, minutely hairy outside, moderately bilabiate, the lower lip 
bearded at the base: sterile filament as long as the others and bearded at 
the apex: capsule ovoid, acuminate, longer than the calyx, On the banks 
of the Willamette river near Portland Oregon to Brit. Columbia and Idaho. 
P. Whitedii Piper Bot. Gaz. xxi 490. puberulent below and glandu- 
lar pubescent above : stems several from a lignescent base 8-12inches high: 
radical leaves glabrous or sparingly puberulent, narrowly spatulate-lanceo- 
late, acute, saliently dentate with large obtuse teeth, or rarely entire or 
nearly so, 2-4 inches long: cauline about 4 pairs, ovate-lanceolate, acute, 
entire or sparingly dentate, clasping at base: thyrsus virgate, interrupted: 
duncles and pedicels short: sepals broadly lanceolate, acute, 3-4 lines 
ong: corolla bright blue, bilabiate 7-10 lines long, glandular-pubescent out- 
side, the lobes puberulent within, throat sparsely bearded: sterile filament 
bearded on one side nearly its whole length with yellow hairs. On rocky 
soil, near Wenatche, eastern Washington. 
