146 POLEMONIACKJR. 



Simple or sparingly branched: flowers sessile in dense leafy-braoted heads: corolla salver- 

 form 



Corolla-tube little or not at all exserted beyond the leafy bracts. 11, 15, 16 



Corolla tube much exserted 13,13, 14 



* * Leaves alternate, lobed or parted; rarely a few entire or opposite. 

 t Leaves palmately parted into rigid pungent divisions: stems woody: flowers large, sessile: 



corolla salverform: stamens included 17, 18 



tt Leaves pedately 6 -7 -parted: soft-hairy perenniak. 



Flowers white in dense heads: some leaves 3-parted or entire 34 



Flowers violet or purplish, solitary, subsessile in forks or axils. 35 



ttt Leaves pinnately incised deft or divided, rarely a few entire or opposite: bracts some- 

 times nearly palmately cleft. 

 a. Flown In dense leafy-bractcd clusters or heads: lobes of the calyx, bracts and upper 



leaves mostly rigid and pungent. 



Much branched annuals: sometimes viscid: never woolly except in- thoheads* stigmasofteu 

 only 2. 

 At least some of the leaves bipinnatifid. 



More or less viscid; odor disagreeable. 19, 20 



Not viscid: leaf -segments filiform SI to 24 



Leaves simply pinnatifid or many entire. 



Not viscid; bracts and calyx fine-woolly 25 



Viscid 36 to 28 



Densely woolly, at least when young: corolla salverform: stamens exoerted. 



Leaves rigid, not viscid: filaments exserted; anthers sagittate 39 to 33 



Leaves not rigid: petioles broad: flowers small, white, numerous 34 



6. Inflorescence bractleis or nearly ao: leaves not rigid or pungent. 



Stems from creeping rootstocks, 1 or 2 incher )pgh 35 



Flowers in long-pedunculate ovoid heads: leaf -lobes filiform 36, 37 



Flowers clustered or solitary: leaf -lobes slender (except 41) 38 to ^ 4 



Corolla pinkish, slender, twice as long as calyx 45, 46 



* * * Leaves entire, (rarely or 3 small lobes), alternate, or the lower opposite, sessile: corolla 

 salverform to funnetform: stamen unequally inserted: more or less viscid annuals. 



Flowers on filiform peduncles: corolla pink, 5 to 10 lines long. 47 



Flowers in loose cluster or scattered: calyx-lobes slender 48 



Flowers in the forks and upper axils: calyx-lobes awn-like 49 



Flowers in leafy -bracted capitate clusters or a few scattered. 



Calyx-lobe* acute: corolla 5 lines long .., . . I . . 50 



Calyx-lobes obtuse: corolla 10 to 15 lines long .,^ 51 



1 1. Dactylophyllum, Gray. 

 L GK Uniflora, Benth. Corolla white or pinkish, nearly rotate. W. Cal 



