PHLOX FAMILY 683 



Corolla 2 cm. or more long; calyx-lobes broadly triangular-lanceolate, obtusish. 



1. C. grandiflora. 

 Corolla about 1 cm. long; caly.x-lobes lanceolate, acute. 2. C. linearis. 



Floral le;ives like the stem-leaves, linear; stamen.s inserted at the same heigiit. 

 Calyx-liilies tri:ni)i;ul;i,r, merely acute. 3. C. tcnella. 



Calyx-lobes lanceolate, aristate-tipped. 4. C. aristclla. 



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



.5. C. hcterophijUa. 

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



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

 L5-7 dm. high, hirsute above; leaves linear-lanceolate, 4—10 cm. long, 5-15 mm. 

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

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

 those of the branches often smaller and with smaller flowers; corolla trumpet- 

 shaped, yellowish, turning reddish, 2-3 cm. long; limb 12-15 mm. broad; lobes 

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

 Utah— Calif. Son.—Suhmont. My-Au. 



2. C. linearis Nutt. Stems simple or in age sometimes branched, 1-4 dm. 

 high, hirsutulous; leaves linear-lanceolate, 1.5-5 em. 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-like spike; corolla trimipet-shaped, 10-15 

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

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

 Plain— Mont. My-Au. 



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

 branched, ghmdular-pubendent; leaves narrowly linear-obtuse, 2-5 cm. long, 

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

 purplish, trumpet-shaped, 7-8 mm. long; limb about 3 mm. wide; lobes narrowly 

 ovate. Gilia leplotes A. Gray. Dry hills: B.C.. — Wyo. — Utah — Calif. Sub- 

 7nont. Je-Jl. 



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

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

 ing at both ends; flowers in the upper axils; calyx in fruit 5 mm. long; corolla 

 trumpet-shaped, about 1 cm. long; Umb about 2 mm. wide. Gilia aristclla A. 

 Gray. Bare hillsides: Wash. — Mont. — n CaUf. Son. — Submont. 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-like 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 ground: B.C. — Ida. — CaUf. Submont. 

 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 earlier entire, the later often 3-5-lobed at the apex; 

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

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

 debilis S. Wats. G. Howardii M. Fj. Jones. Among loose rocks: Wash. — Mont. 

 — Wyo. — Utah — Ore. Mord. — Alp. Jl-Au. 



3. PHLOX L. Phlox. 



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

 opposite or sometimes alternate above, entire. Flowers in terminal corymbiform 

 or paniculate cymes. Calyx of 5 sepals, united into a 5-ribbed tube; lobes often 

 pungent. Corolla 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 coroUa. Capsule included in the tube 

 of the calyx, which is ruptured at maturity. Seeds not emitting spiral threads 

 when wetted. 



