PHLOX FA^IILY " 683 



Corolla 2 cm. or more long; calyx-lobes broadly triangular-lanceolate, obtu'ash. 



1. C. grandifloTa. 

 Corolla about 1 cm_ long: calyx-lobes lanceolate, acute. 2. C. linearis. 



Floral leaves Uke the stem-leaves, linear; stamens inserted at the same height. 

 Calyx-lobes triangular, merely acute. -3. C. tenella. 



Calys-lobes lanceolate, aristate-tipped. 4. C. aristella. 



Leaves, at least the lower, pinnately divided; divisions again toothed. 



5. C. heierophyUa. 

 Perennials with a cespitose rootstock. 6. C. debilis. 



1. C. grandiflora DougL Stem at first simple, later on decidedly branched, 

 1.5-7 dm. high, hirsute above: leaves linear-lanceolate, 4—10 cm. long, o-lo mm. 

 broad, puberulent, those of the inflorescence ovate and shorter, decidedly vis- 

 cid; flowers in dense head-hke leafy spikes ending the stem and its branches, 

 those of the branches often smaller and with smaller flowers: corolla trmnpet- 

 shaped, yellowish, turning reddish, 2-3 cm. long; limb 12-1.5 mm. broad: lobes 

 oblong. Gilia grmidiflora A. Gray. In sandy or gravelly soil: B.C. — Mont. — 

 Utah — Calif. Son. — Suhmont. My-Au. 



2. C. linearis Xutt. Stems simple or in age sometimes branched, 1-^ dm. 

 high, hirsutulous; leaves Unear-lanceolate, 1.5-5 cm. long. 2-8 mm. wide, puberu- 

 lent, the floral ones ovate or lance-ovate, often paler at the base and sometimes 

 tinged with red ; flowers in terminal head-hke spike : corolla trumpet-shaped, 10-15 

 mm. long: lobes oval: limb 4—5 mm. broad. C. lanceolata Greene. Dry and 

 sandv soil; Minn. — Neb. — Colo. — Calif. — B.C.: adv. in Que., N. B., and X. Y. 

 Plai'—Mord. My-Au. 



3. C. tenella A. Gray. Stem slender, 1 dm. high or less, dichotomously 

 branche<i, glandular-puberulent ; leaves narrowly Unear-obtuse, 2-5 cm. long, 

 1-3 mm. wide; flowers axillar\-, subsessile; calyx in fruit 5 mm. long: corolla 

 purphsh, trumpet-shaped, 7-S mm. long; hmb about 3 mm. wide: lobes narrowly 

 ovate. Gilia leptotes A. Gray. Drj- hills : B.C.. — Wyo. — ^Utah — Calif. Sub- 

 mont. Je-.Jl. 



4. C. aristella A. Gray) Rydb. Stem mostly simple, about 1 dm. high, 

 filiform, glandular above; leaves lance-linear, 1-3 cm. long. 1-3 mm. wide, taper- 

 ing at both ends; flowers in the upper axils : cal\-x in fruit 5 mm. long; coroUa 

 trumpet-shaped, about 1 cm. long; limb about 2 mm. wide. Gilia aristella A. 

 Gray. Bare hillsides: Wash. — Mont. — n Calif. Son. — Suhmont. Je. 



5. C. heterophylla Hook. Stem at first simple, soon branched from the 

 base, puberulent, 1—4 dm. high; leaves hirsute, the lower pinnatifid or bipinnatifid, 

 with lanceolate, acuminate or acute divisions, the upper lanceolate or oblanceo- 

 late, toothed or entire, the floral ones ovate and about 1 cm. long; flowers in 

 head-hke clusters at the end of the branches; calyx in fruit 7-S mm. long; teeth 

 ovate-lanceolate, acuminate; corolla rose-colored, 12-15 mm. long; limb 5-6 mm. 

 broad. G. heterophylla Dougl. Open groimd: B.C. — Ida.— Calif. Suhmont. 

 Ap-Au. 



6. C. debilis (S. Wats.) Greene. Stems 5-15 cm. high, decumbent, viscid- 

 pubescent above: leaves thick, petioled, puberulent, obovate-spatulate to ob- 

 lanceolate in outline, the earUer entire, the later often ;3-.5-lobed at the apex; 

 floral leaves like the others, but sessile and crowded: calyx-lobes lance-subulate; 

 corolla violet. 15 mm. long, funnelform; lobes oblong: stamens exserted. Gilia 

 debilis S. Wats. G. Hoicardii M. E. Jones. Among loose rocks: Wash. — Mont. 

 — ^Wyo. — Utah — Ore. Mont. — Alp. Jl-Au. 



3. PHLOX L. Phlox. 



Perennial (aU ours), or annual herbs, often shrubby at the base. Leaves 

 opposite or sometimes alternate above, entire. Flowers in terminal cor>Tnbiform 

 or paniculate c^Tnes. Cah-x of 5 sepals, united into a .5-ribbed tube: lobes often 

 ptmgent. CoroUa salverform. white, blue, purple, or red, with a slender tube; 

 lobes spreading, obovate, orbicular, or obcordate. Stamens 5, included; fila- 

 ments equally adnate to the tube of the corolla. Capsule included in the tube 

 of the cai>-x, which is ruptured at maturity. Seeds not emitting spiral threads 

 when wetted. 



