450 POLEMONIACE® . PHLOX 
of the salverform corolla. 
* * Leaves palmately 3-7-parted, the divisions rigid and pungent: 
seeds not mucilaginous when wet. 
2 Cantua Woody-stemmed, at least at base: flowers solitary and sessile, 
or few in a cluster at the summit of short branches or branchlets. 
* * * Leaves mostly alternate and entire: seeds mucilaginous and 
throwing out spiral threads when wet. 
3 Collomia Stamens unequally inserted in or below the throat of the 
funnelform or salverform corolla: filaments slender, often exserted. 
* * * * Leaves various: seeds almost always mucilaginous when 
wet. . 
+ Leaves either opposite or palmately divided to the sessile base, 
usually both: seed-coat mucilaginous when wetted but destitute of 
spiral threads. 
4 Linanthus Low glabrous annuals with opposite leaves. 
_ + + Leaves alternate and pinnately incised cleft or divided, rarely 
entire: seed coat mucilaginous and sending out spiral threads when wet. 
5 Navarretia Low and much. branched annuals, not floccone anes 
mostly glandular and viscid: flowers capitate-crowded and densely 
foliaceous-bracted: lobes of the calyx rigid and acerose-pungent or 
spinulose: corolla tubular-funnelform. 
6 Hugelia Floccose-woolly annuals, neither glandular nor viscid: flow- 
ers capitate-glomerate and folidceous-bracted ; lobes of the calyx acerose 
or subulate and cuspidate or pungent. 
7 Ipomopsis Biennials: not woolly: flowers thyrsoid paniculate: lobes 
of the calyx subulate: corolla narrowly tubular-funnelform. 
8 Gilia Flowers scattered, crowded, or capitate-glomerate: corolla from 
funnelform to nearly rotate. 
9 Polemonium Mostly smooth perennials with pinnate leaves and 
thyrsiform or cymulose-paniculate inflorescence: lobes of the calyx 
foliaceous, enlarging in fruit. 
“ PHLOX L. Gen. n. 214. 
Herbs or suffrutescent plants with opposite entire leaves, and 
showy red, white or blue flowers in terminal cymes or cymose 
panicles. Calyx tubular or tubular-campanulate, 5-cleft and 
5-ribbed. the lobes acute or acuminate, mostly scarious-margined 
and the sinuses commonly scarious, not enlarging in fruit but 
often bursting when the seeds mature. Corolla strictly salver- 
form, with slender tube and narrow orifice, the limb 5-lobed. 
Stamens 5, straight, inserted irregularly on the tube of the corolla; 
filaments very short; anthers not exserted. Ovary oblong or 
ovoid, 3-celled; with 1-4 ovules in each cell. Capsule ovoid, 
3-valved. Seeds not mucilaginous nor emitting spiral threads 
when wet. Ours all belong to a peculiar section that is 
Suffruticulose or suffrutescent, rarely herbaceous to the ground; 
chiefly with narrow or minute and thick-margined leaves, and 
one-flowered branchlets or peduncles. 
