_PENTSTEMON SCROPHULARIACE & 515 
P. Oreganus. P. Gairdneri var. Oreganus Gray. Cinereous-puber- 
ulent and the inflorescence glandular: stems numerous from a much 
branched woody base, very slender, 4-8 inches high: leaves linear or the 
lowest ones linear-spatulate, about an inch long by a line or less wide, all 
opposite: thyrsus very narrow and loose; the peduncles mostly 1-flowered : 
sepals oblong-lanceolate, acute, about 2 lines long: corolla tubular or but 
little funnelform, 8-10 lines long, obscurely bilabiate and the lips but little 
spreading: sterile filament bearded on the upper side. On dry ridges, 
southeastern Oregon. — 
P. laricifolius H. & A. Bot. Beech. 376. Glabrous: stems tufted, 2-5 
inches high: lignescent caudex not rising above the soil: leaves very slen- 
der, when dry filiform, the larger a fourth of a line wide, and with the 
margins revolute, an inch or less long, much crowded in subradical tufts 
and scattered on the tiliform flowering stems: flowers few, loosely racemose, 
slender-pedicelled: sepals ovate-lanceolate: corolla tubular-funnelform, 
6 lines long, the small purple limb obscurely bilabiate: sterile filament 
bearded on the upper side. Interior of Oregon to Wyoming. 
-§ 2 SaccantHEeRA Benth. Bot. Mag. t. 3391. Herbaceous 
perennials, some woolly at base, mostly with ample and showy flow- 
ers. Anthers sagittate or horseshoe-shaped: the cells confluent at 
the apex, and there dehiscent by a continuous cleft, which extends 
down both sides only to the middle: the base remaining closed and 
saccate : sometimes hirsute never lanate. 
P. glandulJosus Lindl. Bot. Reg. t. 1262. Soft-pubescent and viscid: 
stems rather stout 2-3 feet high: leaves broad and thinnish, the lower 
ones from ovate to oblong, 6-8 inches long, dentate: upper ones from ovate- 
lanceolate and acuminate, to cordate-clasping, usually denticulate: thyrsus 
contracted and interrupted, leafy below : cvmes short-pedunculate, few—sev- 
eral flowered: sepals attenuate-lanceolate, lax, 6-8 lines long: corolla 1-14 
inches long, with funnelform inflatei throat and broad spreading lips: 
raya pement glabrous. On moist prairies eastern Oregon to Washington 
an aho. 
P. venustus Dougl. Lindl. Bot. Reg. t. 1309. Very glabrous: stems 
rather strict and simple, 1-2 feet high, leafy: leaves thickish in texture, 
oblong-lanceolate or the upper ovate-lanceolate, closely and subulately 
serrate, about 2 inches long: thyrsus naked, mostly narrow: peduncles 
1-3-flowered : sepals ovate, acute or acuminate, only a line or 2 long, much 
shorter than the narrow proper tube of the corolla: upper part of the fer- 
tile filaments and of the sterile one (as also usually anthers and lobes of 
the corolla within), sparingly pilose. Eastern Oregon to Idaho. 
P. diffusus Dougl. Lindl. Bot. Reg. t. 1132. Glabrous or merely pu- 
berulent: stems numerous, diffuse, 10-18 inches high: leaves thin, from 
oyate to oblong-lanceolate or the upper subcordate, sharply and unequally, 
sometimes laciniately, serrate, 1-4 inches long: thyrsus commonly inter- 
rupted and leafy: pedicels mostly shorter than the ovate or lanceolate and 
acuminate, sometimes laciniate-toothed sepals: corolla 8-12 lines long, 
violet, funnelform, the lips widely spreading: anthers and inside of corolla’ 
glabrous: sterile filament more or less hairy above. On wooded rocky 
banks of the Cascade Mountains in Oregon to Brit. Columbia. 
P. Richardsoni Dougl. Lindl. Bot. Reg. t. 1121. Glabrous through- 
out: stems very diffuse or decumbent, 6-18 inches long, simple or panicu- 
lately branched above: leaves from ovate to narrowly lanceolate in outline, 
and from entire or incisely toothed to laciniate-pinnatifid, 1-3 inches long, 
often alternate: thyrsus loosely panicled, the peduncles 2-flowered : sepals 
ovate to ovate-lanceolate, acute, about 2 lines long: corolla bright red to 
