456 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



•Specimens examined: Skamania County, Suksdorf 1487 ; Peshastin, Sandberg db Leiberg 

 495; Spokane, Henderson 2273; Blue Mountains, Piper 2448. 

 Zonal distribution: Arid Transition. 



POLEMONIACEAE. Phlox Family. 



Calyx distended and at length burst by the capsule. 



Corolla large, saherform: leaves all opposite, entire: seeds not 

 becoming mucilaginous when wetted; ours all sufTruticose 



perennials Phlox (p. 456). 



Corolla tubular, funnelform or salverform, usually small; 



leaves mostlj- alternate, usually not entire Gili.'V (p. 459). 



Calyx not distended nor burst by the capsule. 

 Corolla not rotate. 



Calyx lobes spine-tipped; leaves pinnatifid Navarretia (p. 463). 



Calyx lobes not spine-tipped; leaves entire or pinnatifid. Collomia (p. 464). 

 Corolla rotate (in ours); leaves pinnate, the leaflets entire Polemonium (p. 466). 



PHLOX. 



Densely tufted species with crowded leaves; flowers solitary on the 

 shoots. 



Herbage beset with woolly hairs I. P. canescens. 



Herbage not beset with woolly hairs. 



Calyx not at all wooly; leaves hispid-ciliate. 



Leaves grooved, 5 to 6 mm. long 2. P. condensata. 



Leaves usually plane, 8 to 14 mm. long 3. P. caespitosa. 



Calyx sparsely woolly; leaves often woolly at base. 



Herbage finely glandular 4. P. rigida. 



Herbage not glandular. 



Leaves all acerose ; style half as long as corolla 5. P. douglaaii. 



Leaves not all acerose; style nearly as long as co- 

 rolla 6. P. diffusa. 



Loosely tufted taller species; flowers in cymes. 

 Style long, usually equaling the corolla tube. 



Inflorescence not glandular; leaves narrowly linear 7. P. longifolia. 



Inflorescence glandular. 



Whole plant viscid-pubescent; leaves linear, 2 to 4 mm. 



wide 8. P. viscida. 



Only the inflorescence viscid-pubescent; leaves linear, 1 



mm. wide T 9. P. viridis. 



Style short, not longer than the ovary. 



Upper leaves on flowering stem dilated at base. 



Leaves linear, soft ; cymes loose 10. P. speciosa. 



Leaves lanceolate, rigid; cymes dense 11. P. lanceolata. 



Upper leaves on flowering stems not dilated at base. 



Leaves linear or narrowly lanceolate 12. P. whitedii. 



Leaves broader, lanceolate 13. P. occidentalis. 



1. Phlox canescens Torr. & Gr. Pac. R. Rep. 2^: 122, pi. 6. 1855. 



Type locality: "On the Cedar Mountains, south of Great Salt Lake," Utah. 



Range: Eastern Washington to California and Colorado. 



Specimens examined: Wenas, Cotton 917; Horse Heaven, Cotton 589; Rattlesnake 

 Mountains, Cotton 566; Klickitat Hills, Gorman, April, 1895; Columbus, Suksdorf, April 

 13, 1896. 



Zonal distribution : Arid Transition. 



