



ae 
Polemoniaceae 311 
POLEMONIACEAE Phlox Family 
Herbs or shrubs, annual or perennial; juice colorless. Leaves simple or com- 
pound, often dissected; stipules none. Flowers perfect, regular; calyx 5-lobed to -parted, 
persistent. Corolla 5-lobed. Stamens 5, distinct, inserted in the corolla-tube, alternate 
with the corolla-lobes. Ovary superior; style 1, 3-lobed or -cleft. Fruit a capsule, 
3-celled, loculicidal, usually with a thick placental axis. Seeds few to many, small, 
often mucilaginous when wet. 
A. Calyx distended and at lenth burst by the capsule; leaves opposite or alternate. 
B. Leaves opposite, entire; plant perennial; corolla salverform. PHLOX (p. 311) 
BB. Not as above in all of the first 3 points; corolla often not salverform. 
GILIA (p. 312) 
AA. Calyx not distended nor burst by the capsule; leaves alternate. 
C. Calyx-teeth spine-tipped; leaves compound; stamens inserted at unequal heights 
in the corolla-tube. NAVARRETIA (p. 314) 
CC. Calyx-teeth herbaceous, not spine-tipped. 
Leaves compound, pinnate; leaflets entire (except P. confertum) ; stamens in- 
serted equally high in the corolla-tube; corolla rotate to funnelform. 
POLEMONIUM (p. 316) 
DD. Leaves simple, entire or pinnately or palmately dissected; stamens inserted at 
unequal heights in the corolla-tube; corolla salverform to funnelform. 
COLLOMIA (p. 315) 
PHLOX PHLOX 
Herbs, erect or diffuse. Leaves opposite or some of the upper ones alternate, entire. 
Flowers large, white or red or blue or purple, in terminal cymes or cymose panicles. 
Calyx tubular or tubular-campanulate, 5-ribbed; segments acute or acuminate, mostly 
scarious-margined. Corolla salverform; tube narrow; segments obovate or orbicular or 
obcordate, spreading. Stamens inserted at unequal heights. Capsule ovoid, at length 
bursting the calyx-tube. Seed not emitting spiral threads when wetted. (Gk. phlox—= 
flame; the name of some flame-colored flower.) 
A. Densely tufted, mostly forming cushion-like mats or tufts; leaves crowded up to 
the flowers; flowers solitary in most species. 
Lb. Flowers solitary, the annual growth 1|-flowered. 
C. Stem and leaves with woolly or cob-webby hairs. 
[. Leaves densely white-woolly except at tip. E. 
P. lanata Pip. 
DD. Leaves somewhat woolly but not densely so. E. 
P. canescens T. & G. 
CC. Stem and leaves without woolly or cob-webby hairs except sometimes at 
ieaf-base. 
E. Calyx slightly woolly; leaves often woolly at base. 
F. Herbage finely glandular. E. 
P, rigida, Benth. 
FF. Herbage not glandular. 
G. Leaves involute, glabrous. E. 
P. depressa Rydb. 
GG. Leaves plain, often ciliate. 
H. Leaves all needle-shaped; style half as long as the corolla. C. FE. 
(P. douglasti andicola.) 
P. dougilasii Hook. 
