396 POLEMONIACliAE (PHLQX FAMILY) 



ends of the branches: calyx-tube :glandula,r-pubescent, the scarious line be- 

 low the sinuses very narrow; teeth oblong-lanceolate, . ajasiiate-pointed: 

 corolla-tube well exserted; segments narrow, obtuse, entire: style, abput. 

 equaling the tube of the corolla. — Gravelly or stony hills; eastern Wypming 

 to Assiniboia. 



9. Phlox multiflora A. Nels. Bull. Torr. Bot. Club 25:, 278. 1898. Suf- 

 frutescent as to the caespitose muph branched prostrate base, the numerous 

 herbaceous stems nearly erect, 6-10 cm. high, the branches simple, 1-flowered: 

 leaves broadly, linear, glabrous, apiculate, 1^2 era. long, opposite ior, fascicled: 

 peduncles finely pubescent, 1-3 cm. long: calyx angled by the prominent mid- 

 rib of the lobes, membranous in the sinus only ;,lobes,linear-apiculatej equal- 

 ing the tube: tube of the corolla exceeding the calyx; lobes obovate, ,entire, 



1 cm. long: style as long as the calyx.-^In the foothills of the ntountains; 

 from Colorado to Montana. 



10. Phlox dei)ressa (E. Nels.) Rydb.Bull. Torr. Bot. Club 33: 149. 1906. 

 Depressed-caespitose, rising but little above, the ground: leaves 1 cm. long, 

 rarely 2 cm.: flowers mostly subsessile, the corolla-lobes 67? mm. long: other- 

 "wise much like the preceding. (P. densa Brand, 1, c.i 83j sep.ms; to,be merely 

 a still more compact form with sonae traces pf lanate pubescence,) — In moist 

 swales on the plains; Colorado, Wyoming, and Idaho. 



' 11. Phlox andicola (Brit.) E. Nels. 1. c. 11. Stems, from a rhizome,, usually 

 erect, often branched at the surface of the ground and with opposite branches 

 at the nodes, white, the bark exfoliating with age in thin shreds, 5-JD cm. 

 high; sparsely la,nate on the calyx and bases of the le,a,veg, thq stems granular- 

 pubescent and somewhat glandular: leaves acerose or sub,ijlate> often some- 

 what bisulcate, pungent, 1-2 cm. long: flowers sessile or on peduncles 2 mm. 

 long: calyx-teeth, as long as the tube^ pungent: corolla ■yifhite, the tube some- 

 what hairy near the base within, one and a half times the length of the calyx, 

 the lobes broadly obovate,, 5t7 mm. long: style about as long as the c^lyx. — 

 On the plains east of the Rocky Moimtains, from Montana to western Ne- 

 braska and eastern Wyoming. 



12. Phlox Kelseyi Brit. Bull. Torr, Bot, Club 19: ,225. 1892. Ma,ny- 

 stemmed from a woody root, the stems spreacling, creeping or ascending, 

 sometimes 20 cm. long, glabrous or slightly pubescent above, very leafy: 

 leaves sessile, oblong or linear-oblong, glabrous or ngarly so on both sides, 

 5-15 mm. long, 2^ mm. wide, thick, rigid, the apex mucronately tipped with 

 a short spine, the margins revolute, ciliate; upper kaves narrower and longer 

 than the lower: flowers sessile or short-peduncled, the peduncles and ca,lyx 

 somewhat . glandular-pubescent or glabrous: calyx-teeth, subulate, ^s long as 

 or longer than the tube: coroUaTtube somewhat exceeding the calyx-lobes; 

 limb about; 1.5 cm. broad, bright blue or lilac, the lob^ obovate-cuneate, 

 rounded. [Brand in his monogra,ph of this family {Pflahzenreich) reduces 

 the following to varietal rank, which is probably quite justifiable: P, oHio- 

 marginata Jones, Zoe 4: 367. 1894; P. costata Rydb. Mem. N. Y. Bot. Card. 

 1: 315. 1900; P. coUina Rydb. 1. c; P. diapengioides Rydb. 1, c.]— Wyoming 

 and Montana. 



13. Phlox longifolia, Nutt, 1. c. Usually erect in habit, 10^25 cm. high, 

 finely pubescent or glabrous: leaves linear, with prominent midveins! and 

 somewhat thickened cartilaginous margins, 3-6 cm. long, 2-3 mm! wide; 

 flowers on pedicels 1-3 cm, long: calyx with slightly replicate sinuses: corolla 

 white, the tube somewhat exceeding the calyx, the lobes obovate or cuneate- 

 obovate, entire, emarginate, or erpse, 8-10 mm', long: ovules generally solitary 

 in each cell. — Along the western side of the Rocky Moimtains from Montana 

 to, Colorado and Utah; also in Oregon and Washington. 



14. Phlox cernua E. Nels, 1. c. 22. Suffrutescent at base and many-stemmed, 

 6-12 cm. high, the lower part of the stems purple; glabrous throu^out or tl;e 

 stems puberulpnt below: leaves Unear, spi^eadihg, 2-3 cm. long, less than 



2 mm. wide: flowers on slender pedicels (about ^, cm. long), inclined to be 

 nodding: calyx writh somewhat replicate sinuses, the teeth half the length 

 of the tube: corolla white or tinged with purple, the tube twice the length of 



