POLEMONIAC&E. 81 



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

 form 



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



Corolla tube much exserted 12, 13, 14 



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

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



corolla salverform: stamens included'. 17, 18 



ft Leaves pedatdy 5-7 -parted: soft-hairy perennials. 



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



Flowers violet or purplish, solitary, subscssile in forks or axils 35 



ttt Leave* pinnatcly incised cleft or divided, rarely a few entire or opposite: bracts some- 

 times nearly palmately cleft, 

 a. Flowers in dense leafy-bracted clusters or heads: lobes oj the calyx t bracts and upper 



leaves mostly rigid and pungent. 



Much branched annuals: sometimes viscid: never woolly except in th&heads: stigmas-of ten 

 only 2. 

 At least some of the leaves bipinnatifid. 



More or less viscid; odor disagreeable ...,...,.. 19, 20 



Not viscid: leaf -segments filiform 21 to 24 



Leaves simply pinnatifid or many entire. 



Not viscid; bracts and calyx fine-woolly 25 



Viscid 20 to 28 



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



Leaves rigid, not viscid: filaments exserted; anthers sagittate 29 to 33 



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



6. Inflorescence bractless or nearly so: leaves not rigid or pungent. 



Stems from creeping rootstocks, 1 or 2 incher high 35 



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



Flowers clustered or solitary: leaf -lobes slender (except 41) 38 to 44 



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



* Leaves entire (rarely 2 or 3 small lobes), alternate, or the lower opposite, sessile: corolla 

 salverform to funnelform: stamen unequally inserted: more or leu 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-lobes acute: corolla 5 lines long 60 



Calyx-lobes obtuse: corolla 10 to 151ines long .*^**^.... ...... 61 



1. Dactylophyllum, Gray. 



1. GK liniflora, Benth. Corolla white or pinkish, nearly rotate, W. CaL 

 11 



