PHLOX FAMILY 687 



midrib, ciliate and more or less glandular beneath; calyx about 5 mm. long, some- 

 what glandular; lobes lanceolate, in fruit divergent; corolla pink-purple; lobes 

 obovate, 4-5 mm. long. P. albomarginata minor M. E. Jones. Dry hills: Mont. 

 Utah. Submont. Jl-S. 



20. P. linearifolia (Hook.) A. Gray. Suffruticose perennial; herbaceous 

 branches 1.5-3 dm. long, with straw-colored bark; leaves narrowly linear, about 

 2-5 cm. long, 1-2 mm. wide; flowers long-pedicelled ; calyx glabrous, about 1 

 cm. long; corolla 2-2.5 cm. long; lobes obovate or oblanceolate, 7-12 mm. long. 

 Plains: B.C. Wyo. Utah Ore. Plain Submont. Ap-Jl. 



21. P. longifolia Nutt. Perennial, with a woody base; stems 1-2 dm. high, 

 erect, glabrous below, usually puberulent above or more puberulent throughout 

 (var. puberula E. Nels.); leaves linear, with strong midrib, 3-7 cm. long, 2-3 mm. 

 wide; calyx usually more or less pubescent, sometimes glandular, about 1 cm. 

 long; corolla 18-20 mm. long; lobes obovate, 8-10 mm. long. P. cernua E. Nels., 

 a young form with nodding flowers. SWEET WILLIAM. Plains and hills: Mont. 

 N.M. Utah Ore. B.C. Plain Submont. My-Au. 



22. P. austromontana Coville. Stems 5-10 cm. high, woody at the base, 

 minutely canescent, not glandular; leaves linear-subulate, acerose, 1-1.5 cm. 

 long (rarely 2-2.5 cm. in var. prostrata), arcuate-spreading in age, minutely 

 canescent; flowers subsessile; calyx 6-9 mm. long, glabrous or slightly puberulent; 

 teeth acerose; corolla white or rarely purplish, 15-20 mm. long; tube exceeding 

 the calyx; lobes obovate, 5-7 mm. long. P. densa A. Brand, a denser more com- 

 pact form. Dry mountains: se Colo. Ariz. Calif.; L. Calif. Son. Submont. 



23. P. Stansburyi (Torr.) Heller. Stems with a ligneous branched base, 

 1-2 dm. high, pubescent and more or less glandular throughout; leaves thick, 

 spreading, linear or linear-lanceolate, 2-2.5 cm. long, 2-3 mm. wide, or in the 

 var. brevifolia ovate-lanceolate or oblong, 0.5-2 cm. long, 3-4 mm. wide; calyx 

 1 cm. long, glandular; teeth subulaibe-acerose, as long as the tube; corolla pink 

 or rose-colored; lobes cuneate-obovate, erose or emarginate, 7-8 mm. long. P. 

 viscida E. Nels., a low, more viscid form. SWEET WILLIAM. Dry regions: Colo. 

 N.M. Calif. Wash. Son. Submont. Ap-Je. 



24. P. viridis E. Nels. Stems several from a ligneous base, 0.5-1.5 dm. 

 high, glabrous below, glandular-pubescent above; leaves linear-acerose, 2-3 cm. 

 long, 1 mm. wide; pedicels short, glandular-pubescent; calyx glandular-pubes- 

 cent, about 1 cm. long; teeth acerose, as long as the tube; corolla light blue; 

 lobes 6-7 mm. long, obovate-cuneate, emarginate. P. aculeata A. Nels. Table- 

 lands: Wash. Ida. My-Je. 



25. P. gladiformis (M. E. Jones) E. Nels. Stems softly pubescent and 

 slightly glandular throughout, prostrate at the base; leaves thick, with prominent 

 midrib, narrowly lance-linear, 1.5-2 cm. long, about 2 mm. wide; flowers sub- 

 sessile; calyx nearly 1 cm. long, sparingly glandular, ciliate; teeth acerose, slightly 

 longer than the tube; corolla white; tube twice as long as the calyx; lobes cuneate- 

 obovate, entire, 7 mm. long. P. longifolia gladiformis M. E. Jones. Dry regions: 

 Utah. Submont. My. 



26. P. speciosa Pursh. Shrubby perennial, 5-10 dm. high; annual branches 

 2-3 dm. long, glandular-viscid above; leaves linear or the upper lance-linear, 

 4-7 cm. long, 2-4 mm. wide, more or less pubescent; flowers in lax corymbiform 

 cymes; calyx fully 1 cm. long, glandular-pubescent; lobes subulate; corolla 2-2.5 

 cm. long; lobes 8-14 mm. long, obcordate or obovate, from deeply emarginate to 

 entire. P. Sabini Dougl. Copses and hillsides: Wash. Wyo. Calif. Son. 

 Submont. My-Je. 



4. MICROSTERIS Greene. 



Small branched annuals. Leaves all except the floral ones opposite, narrow 

 and entire. Flowers small, perfect, axillary. Calyx tubular, 5-cleft, ruptured 

 by the fruit; lobes scarious-margined. Corolla salver-shaped, with a narrow 

 tube; throat funnelform. Stamens unequally adnate to the corolla-tube. Cap- 

 sule 3-celled; seeds few, large, the coat, when wetted, mucilaginous but without 

 sp iracles. 





