POLEMONIACEAE 1101 
ich. and Mass.—Sum.—A very showy plant. The flowers are adapted to 
Cross- on EE by humming-birds. 
3. PHLOX L. Dwarf-shrubby, perennial, or annual plants. Leaves 
mostly opposite, with their bases connected by stipular lines, in some species 
alternate, the blades entire. Inflorescence primarily cymose, the cymes often 
arranged in eorymbs or panicles, bracted. Calyx tubular; lobes narrow, acute 
or awned. Corolla typically bright-purple, but ranging to rose-red, lue- 
violet, or to white, pale eye often striate with 5 groups of A p 
lines: lobes cuneate to broadly obovate. Capsule subglobose to ellipsoid, 4-6 
mm. long.—About 50 p unn a North modum except that one extends from 
Alaska into Siberia. Several of these, as well as hybrids between them are 
in eultivation and have A: locally. Many of the species are markedly 
variable. 
Stems woody, aS or decumbent; axillary latent o CDDOMSBHES leav 
es mostly 
persistent : Bore scence a few-flowered cyme; pedice 
often elongat I. SUBULATAE. 
Stems herbaceo s decumbent or erect; i 
: axillary 2 
shoots inconspicuous: leaves deciduous or a f 
sistent : infloresce nce few 
Plant perennial : ^ leaf-blades obtuse to acute with 
Short awn-tips: inflorescence bilaterally 
1, II. DIVARICATAE. 
saree annual: leaf-blades acute, with prominent 
awn-tips : inflorescence asymmetrical. III. DRUMMONDIANAE. 
Calyx- ples mos Pd than the tu 
p 
e. 
Leaves medium-sized, their margins roughish or 
oe with soft hairs, and their lateral veins 
seu IV. OvATAE. 
ones relatively large, their margins ciliate-serru- 
late stiff oues and their lateral veins 
DPosüncnt areola V. PANICULATAE. 
I. SUBULATA 
Corolla-lobes entire, erose, or shallowly Eo eT stamens all 
included ; style 1-8 mm. lon 
Corolla-lobes conspicuously notched (exceptionally nearly en- 
ire) ; stamens partly exserted; style 4-12 mm. long. 
p numerous, wded; low wer tages 8—20 mm. long; 
nu 
1. P. nivalis. 
1 2. P. subulata. 
Nodes few, more remote; lower leaves 20—60 mm. long; 
sinuses in the corolla-lobes averaging 3 mm. deep. 3. P. bifida. 
DIVARICAT 
Sterile shoots becoming decumbent, often roo at nodes; 
leaves rather broad; inflorescence lax ; MER glabrous. 4. P. divaricata. 
Sterile A erect. or oU Me D rooting 7 odes ; leaves 
ostly narro inflores mpa 
ig eps mostly “near to ETE y persistent ; 
bracts spreading ; inflorescence- hairs sometimes gla nd- 
tipp 
Nodes few: leaves pubescent or sometimes glabro 
the upper spreading, passing rather abruptly into "the 
bracts. 9. P. pilosa, 
Nodes numerous; leaves always glabrous, the upper 
enang passing gradually into glandular-pubescent 
6. P. floridana. 
md “oblong SUD to lanceolate, many of them persis- 
ten bra ending ; inflorescence- hairs coarse, 
esiandular 7. P. amoena. 
