310 PITTONIA. 
rowly elliptical very acute segments of unequal length, the 
shortest hardly equalling the tube of the corolla, the longest 
almost equalling the full length of the corolla; corolla 
broadly funnelform, the segments shorter than the tube, 
rather obtuse, almost equalled by the longer sete of the 
crown. 
Nez Perces Co., Idaho, Heller, July, 1896 (n. 3440). 
PENTSTEMON PULCHELLUS. Czespitose undershrub, with 
very short crowded sterile leafy branches, and upright flow- 
ering stems, the latter only 2 or 3 inches high including the 
short thyrsoid inflorescence: herbage light green and gla- 
brous throughout: leaves coriaceous, entire, the lowest from - 
ovate to oblanceolate, only 4 to ? inch long including the 
slender petiole, those of the stem in about two pairs, oblong 
or lanceolate-oblong, sessile: flowers numerous, deep blue, 
compacted in an interrupted thyrsus of about two-verticil 
lasters: sepals, obovate, abruptly acute, with thin purple- 
scarious margins: corolla about 4 lines long, with narrow 
tube and abruptly spreading limb, the throat sparsely bairy. 
On alpine summits of the Blue Mountains, Oregon, W. C. 
Cusick, n. 1720; distributed for a variety of P. confertus, 
from which it cannot fail to be distinguished by its coria- 
ceous leaves and suffrutescent habit. 
PENTSTEMON GENICULATUS. More manifestly suffrutescent 
than the last, the short prostrate ligneous branches only spar- 
ingly leafy, the branchlets divaricate: leaves an inch long 
including the slender petiole, ovate-lanceolate, acute, entire; 
the whole plant glabrous, except the pubescent calyx and 
outside of the corolla: flowering stems mostly 3 to 6 inches 
high, erect, rigid, with abont 2 or 3 pairs of sessile or sub- 
sessile obovate or ovate-lanceolate leaves: flowers in a single 
dense subeapitate terminal cluster which is twice as broad as 
high : sepals elliptic-lanceolate, very acute, viscid-pubescent : 
