SPECIES OF PENTSTEMON. 167 
P. ELLIPTICUS. Herbaceous to the base, a foot high or more, 
rather stout, glabrous throughout, glaucescent: basal leaves 
ample, slender petioled, the elliptic-blades 24 or 3 inches long, 
thin, faintly 3-nerved, the cauline all reduced, lanceolate, sessile 
by a broad base, much shorter than the internodes, those next 
the inflorescence denticulate: thyrsus large for the P. confertus 
group, the false whorls 5 or 6, but mostly approximate: sepals 
long, lanceolate, acuminate, broadly scarious and often toothed 
or serrated : corollas purple, 3 inch long, rather broad as to both 
tube and limb, scarcely ventricose, lower lip bearded, as also the 
sterile filament at tip and below it. 
Type in U. S. Herb. from some unrecorded station in the 
State of Washington, in 1889, by G. R. Vasey, n. 446. 
P. VERONIC@/FOLIUS. Herbaceous throughout, or old plants 
with short suffrutescent base, stout, a foot high, glabrous except 
as to inflorescence, glaucescent: basal leaves small, elliptic- 
lanceolate, petiolate, entire, cauline larger, in about 5 pairs, 
oblong to lanceolate, sessile, 2 or 3 inches long, entire, or 
more or less distinctly denticulate: thyrsus much interrupted, all 
parts glandular-pubescent: sepals lanceolate, acuminate, scari- 
ous-edged ` corolla ł inch long, with narrow-funnelform tube 
and bilabiate, only sparsely hairy limb. 
Known to me only as collected by Sandberg, in Idaho, in 1892, 
the type from Lake Waha, n. 245, and larger plant with leaves 
all entire, from Viola, Latah Co., n. 479. The leaves in all 
respects, save as to the bloom on them, recall those of some large 
Veronica. 
P. ALBERTINUS. Near P. humilis, about as large, more slender, 
the foliage thinner : basal leaves 2 inches long, of ovate-elliptic 
acute blade and slender petiole of equal length, cauline in about 
3 pairs, oblong to ovate-lanceolate, 1 to 14 inches long, shorter 
than the internodes, often like the basal quite entire, some den- 
ticulate, all parts glabrous: thyrsus rather lax : sepals lanceo- 
late, acute: corolla blue, ł inch long, tube ventricose, limb 
ample, loosely bearded, as also the sterile filament at tip. 
Sheep Mountain, Alberta, July, 1895, Mr. John Macoun, 
Geol. Surv. n, 11865, as in my herbarium, 
