396 POLEMONIACEAE (PHLOX FAMILY) 



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

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

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

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

 to Assiniboia. 



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

 frutescent as to the caespitose much 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 cm. long, opposite or 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-apiculate, 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 mountains; 

 from Colorado to Montana. 



10. Phlox depressa (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 6-7 mm. long: other- 

 wise much like the preceding. (P. densa Brand, 1. c. 83, seems to be merely 

 a still more compact form with some traces of 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, 5-10 cm. 

 high; sparsely lanate on the calyx and bases of the leaves, the stems granular- 

 pubescent and somewhat glandular: leaves acerose or subulate, 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 white, the tube some- 

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

 the lobes broadly obovate, 5-7 mm. long: style about as long as the calyx. 

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

 braska and eastern Wyoming. 



12. Phlox Kelseyi Brit. Bull. Torr. Bot. Club 19: 225. 1892. Many- 

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

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

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

 5-15 mm. long, 2-4 mm. wide, thick, rigid, the apex mucronately tipped with 

 a short spine, the margins re volute, ciliate; upper leaves narrower and longer 

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

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

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

 limb about 1.5 cm. broad, bright blue or lilac, the lobes obovate-cuneate, 

 rounded. [Brand in his monograph of this family (Pflanzenreich) reduces 

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

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

 1: 315. 1900; P. collina Rydb. 1. c.; P. diapensioides 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 mid veins 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- 

 pbovate, entire, emarginate, or erose, 8-10 mm. long: ovules generally solitary 

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

 to Colorado and Utah; also in Oregon and Washington. 



14. Phlox cernuaE. Nels. I.e. 22. Suffrutescent at base and many-stemmed, 

 6-12 cm. high, the lower part of the stems purple; glabrous throughout or the 

 stems puberulent below: leaves linear, spreading, 2-3 cm. long, less than 

 2 mm. wide: flowers on slender pedicels (about 1 cm. long), inclined to be 

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

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



