POLEMONIACEAE 1099 
Styles several times longer than the ovary: filaments nearly or quite as long as the 
corolla: top of the ovary and bases of the style glandular-pubescent. 
Woo ovate to elliptic: calyx-lobes mostly less than 
lon 1. N. ovatum. 
Leaf-blades elliptic to elliptic-lanceolate: calyx-lobes mostly 
ver 7 mm. lon 2. N. corymbosum. 
Styles slightly UE than the ovary: filaments much shorter 
than the corolla: ovary and styles glabrous. 
Calyx-lobes line cu" oe linear-lanceolate, sparingly ciliate: 
stem villous-hirs 3. N. quadrivalve. 
Calyx-lobes ovate A ovate lanceolate, closely ciliate: stem 
glabrous or puberulen . N. affine. 
1. N. ovatum (Nutt.) Britton. Plant 2-7 dm. tall, soft-pubescent, spine- 
armed, panieulate above: leaf- -blades somewhat acuminate: ea = -lobes simply 
hite k 
corymbosum aA Eos tze 
Plant 2— : dm. tall, unarmed or nearly 30, 
mbos bove: leaf-blades. " elliptie to 
elliptic. his acute: calyx-lobes glan- 
dular-ciliate: corolla mainly azure-blue, 11- 
15 mm. long: 
m. 4-6 mm. long H 
corymbosa Macbrid ee often cal- 
eareous, and stream-banks, Coastal Plain, 
] 'S. C.—Sum 
3. N. quadrivalve (Walt.) Kuntze. Plant 2-10 dm. long, ede decumbent, 
spine-armed: leaf-blades narrowly elliptie or z so, 4— A long: calyx- 
lobes 6-8 mm. long: o blue or lilac, 7-8 mm. long: capsu e 5- 6 mm. an ng, 
surpassed by t [H. quadrivalvis Walt.|— E a n EUM ; 
ponds, and dickes, Um Plain, Fla. to La. and Va.—S 
4, affine (A. Gray) Kuntze. Plant 2-7 dm. long, often creeping, spine- 
a leaf-blades linear-elliptie or nearly so, 3—10 em. lo ec calyx-lobes 4.5—5 
mm. long: corolla violet, 9-10 mm. long: capsule 6-7 m ong, surpassing 
tie calyx. '[H. affiwis A. Gray]—Swampy places, Coastal Plain and adj. 
provinees, Miss. to Tex., Mo., and Ind.—Sum.- 
Faminy 5. POLEMONIACEAE — Purox FAMILY! 
Plants of moderate size. Calyx of 5 partly united sepals, their free 
parts (lobes) deltoid to subulate. Corolla of 5 partly united petals, the 
1 d. Andro 
free parts (lobes) conspicuous, convolute in bu eciu 
stamens, often unequal. Gynoecium of 3 united carpels, the styles emi 
Fruit a loculicidal capsule —Compris rises 20 genera and 200 species, mos 
numerous in western North America; all but about 10 of the species are 
limited to the New World. 
Corolla campanulate: stamens in part res = 1. POLEMONIUM. 
cor funnelform to salverform : stamens erect. 
eaf-blades pinnately parted: corolla funnelfor rm: filaments 
Wo adnate up to the corolla-thr oat (in our species). 2. GILIA. 
Leaf-blades entire or nearly so: corolla salverform: filaments 
ually adnate to the corolla-tube. 3. PHLOX. 
1 Contributed by Edgar Theodore Wherry. 
