348 Scrophulariaceae 
NN. Calyx 8—10 mm. long; corolla distinctly funnelform, 2—3 cm. 
long Veet: P. gairdneri hians Pip. 
LL. Stem-leaves lanceolate to spatulate; basal leaves often wider. 
O. Basal leaves elliptic-oblong; stem-leaves spatulate to oblong. C. E. 
F.-collinus Nels, 
OO. Basal leaves spatulate to obovate; stem-leaves lanceolate. 
P. Inflorescence glandular-viscid; sepals lanceolate. E. 
P, miser Gray 
PP. Inflorescence not glandular; sepals ovate. E. 
F. perpulcher Neils. 
KK. Stem ashy-puberulent at least up to the inflorescence. 
Q. Leaves linear to ovate; sterile filament bearded at tip. C. E. (P. con- 
fertus globosus.) F. attenuatus Doug]. 
QQ. Leaves linear to oblanceolate; sterile filament glabrous. C. E. 
P. roezli Regel. 
GROUP 4 
A. Inflorescence glabrous or nearly so up to the calyx. 
B. Corolla minutely pubescent inside; 8—16 mm. long; often yellowish or whitish. 
Es P. deustus Doug. 
BB. Corolla glabrous inside. 
C. Stem-leaves linear to lanceolate, often in whorls of 3; corolla 10-16 mm. 
long. E. F. triphyllus Doug]. 
CC. Stem-leaves often wider, none in whorls of 3; corolla 16—27 mm. long. 
D. Leaves often alternate, coarsely dentate or lobed; corolla red to purple; 
sepals acute. C. E. P, richardsonii Doug. 
DD. None of the leaves alternate, finely serrate or dentate; corolla blue; sepals 
acuminate. W.C. 1'. diffusus Doug. 
AA. | Inflorescence pubescent or puberulent. 
E. Leaves glandular-pubescent. E. F. glandulosus Lindl. 
EE. Leaves not glandular-pubescent. 
F. Stem glabrous below the inflorescence. 
G. Corolla 1.2—2 cm. long. 
H. Stem-leaves lanceolate to linear-lanceolate. E. 
F. dayanus How. 
HH. Stem-leaves oblong or wider. 
I. Calyx glandular. C. E. F. pinetorum Pip. 
II. Calyx not glandular. U. E. 1’. rattani minor Gray 
GG. Corolla 2—3.2 cm. long. 
J. Sepals lanceolate, 6—8 mm. long. 
K. Inflorescence not head-like. U. E. F. rattani Gray 
KK. Inflorescence head-like. E. (P. stenosepalous.) 
P. glaucus stenosepalus Gray 
JJ. Sepals ovate, 2—4 mm. long. E.  P. venustus Doug. 
FF. Stem puberulent or pubescent below the inflorescence. 
L. Basal leaves all or nearly all entire. 
M. Inflorescence narrow, wand-like. 
N. Stem hoary-puberulent or -pubescent. E. P., pruinosus Doug]. 
NN. Stem not so. 
O. Leaves 2.5 cm. or less long, lower ones spatulate or oblanceolate, 
upper ones oblong or linear-oblong. E. 
P. humilis Nutt. . 

