POLEMONIACEAE 971 
b. Calyx-lobes less than 14 as long as the tube. 19. P. maculata. 
B. Calyx-lobes bristle-like. 
Leaves conspicuously decurrent on the internodes: calyx-lobes about as 
long as the tube: corolla-tube pubescent. 20. P. acuminata. 
Leaves not decurrent on the internodes: calyx-lobes shorter than the 
tube: corolla-tube glabrous. 
Stems glabrous or puberulent : leaf-blades relatively narrow. 21. P. paniculata, 
Stems villous, and glandular above: leaf-blades relatively broad. 22. P. amplifolia. 
1. Phlox Roemeriàna Scheele. Annual, sparingly hirsute, or glabrate below. Stems 
usually branched at the base ; branches erect or ascending, 0.5-3 dm. tall: leaves mostly 
alternate ; blades spatulate-oblong or lanceolate, 2-4 cm. long, mostly acute or acuminate, 
sessile: calyx villous-hirsute, 8-10 mm. long; lobes subulate, as long as the tube or 
longer, spreading: corolla-tube glabrous, 1 cm. long ; limb about 2 em. broad : capsules 
5-6 mm. long. 
On high prairies, Texas. Spring. 
2. Phlox ténuis (A. Gray) E. Nelson. Annual, glabrous or slightly pubescent, not 
villous. Stems 5-10 cm. long, erect or diffuse : leaves mostly opposite ; blades linear or 
narrowly linear-lanceolate, 1-2.5 cm. long, acute: calyx 6-7 mm. long; lobes subulate, 
about as long as the tube : corolla lavender ; tube finely pubescent, surpassing the calyx ; 
limb 12-15 mm. broad, the lobes rhombic-obovate, acute : capsules about 4 mm. long. 
In low grounds, eastern and southern Texas, Spring. 
3. Phlox Drummóndii Hook. Annual, somewhat villous, at least below, and viscid. 
Stems 1-3 dm. tall, often branched at the base and sometimes above : leaves alternate ; 
hlades narrowly oblong to lanceolate, or those at the base of the stem spatulate-oblanceo- 
late, 1.5-4 em. long, acute, sessile: calyx 8-9 mm. long; lobes subulate : corolla laven- 
der; tube pubescent, surpassing the calyx; limb 1.5-2 cm. broad, the lobes obovate, 
abruptly pointed : capsules about 4 mm. long. 
Insand orsandy soil, Texas. Spring. 
4. Phlox villosíssima (A. Gray) Small. Annual, conspicuously villous-hirsute 
throughout. Stems 1-3 dm. tall, simple or much-branched : leaves mainly opposite ; 
blades linear-lanceolate to almost linear, 2-6 cm. long, acute or somewhat acuminate, 
bristly, sessile: calyx densely pubescent, 9-12 mm. long ; lobes lanceolate-subulate, nearly 
erect, about as long as the tube: corolla pale lavender ; tube finely pubescent, somewhat 
surpassing the calyx ; limb 2-2.5 cm. broad, the lobes orbicular-obovate or orbicular- 
jap tee us abruptly pointed : capsules 5-6 mm. long. [P. Drummondii var. villosissima 
A. Gray. 
In river valleys, southern Texas. Spring. 
5. Phlox áspera E. Nelson. Annual, pubescent with short rigid hairs. Stems 
branched from the base ; branches 12-17 cm. tall, often with a few longer hairs mixed with 
the puberulence: leaves opposite ; blades narrowly lanceolate to linear, 2-4.5 cm. long, 
thick and firm : calyx, like the pedicels, glandular; lobes twice as long as the tube, awn- 
tipped : corolla violet ; tube glandular-pubescent, about twice as long as the calyx ; lobes 
cuneate-obovate, about 11 mm. long, mucronate-acute: capsules 4-5 mm. long. 
In dry soil, southern Texas. Spring. 
6. Phlox réptans Michx. Perennial, often sparingly pubescent. Stems branched at 
the base, the branches of 2 kinds ; sterile prostrate or pean T fertile erect or ascending : 
leaves of 3 kinds, basal 4-10 cm. long, with spatulate or ovate blades and margined petioles, 
those of the sterile shoots similar but smaller, those of the fertile stems usually oblong or 
oblong-lanceolate : calyx 10-13 mm. long, sparingly pubescent; lobes narrowly linear or 
linear-subulate, about as long as the tube : corolla purple or violet ; tube 2-2.5 cm. long ; 
limb 2.5-3 cm. broad ; lobes obovate or cuneate-obovate : capsules 2.5-3 mm. long. 
In open woods, Pennsylvania to Kentucky, south to Georgia and Alabama. Spring. 
7. Phlox divaricata L. Perennial, more or less densely viscid-hirsute. Stems erect 
or ascending, 2-5 dm. long, usually tufted, producing decumbent or creeping shoots at the 
base: leaves opposite; blades oblong to lanceolate, or ovate-lanceolate, 1.5-5 cm. long, 
usually acute, entire, sessile, the upper ones sometimes cordate ; those of the shoots often 
longer, sometimes broadest above de middle, sessile: calyx 6-10 mm. long; lobes linear- 
subulate, curved at maturity : corolla lavander or bluish ; tube 1-1.5 em. long ; limb 2.5-3 
em. broad ; lobes apiculate or notched : capsules subglobose, 4-5 mm. long. 
In damp woods, Ontario to Minnesota, south to Florida and Louisiana. Spring. 
8. Phlox amoena Sims. Perennial, villous or hirsute. Stems ascending or decum- 
bent, 1-2.5 dm. long, often branched at the base : leaves opposite ; blades leathery, spatu- 
late to oblong or linear, 1-4.5 em. long, obtuse or merely acute, often erect or ascending, 
sessile : ian compact, often congested : calyx bristly-pubescent, less than 1 cm. long ; 
