PHLOX FAMILY 683 



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



1. C. grandi flora. 



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



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



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



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



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



5. C. heterophylla. 

 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, 5-15 mm. 

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

 cid; flowers in dense head-like 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. Submont. My-Au. 



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

 high, hirsutulous; leaves linear-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-like spike; corolla trumpet-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, glandular-puberulent; 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 leptotes A. Gray. Dry 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; calyx in fruit 5 mm. long; corolla 

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

 Gray. Bare hillsides: Wash. Mont. n Calif . Son. Submont. Je. 



6. 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 7-8 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. Calif. 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; 

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

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

 Wyo. Utah Ore. Mont. 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 corolla. Capsule included in the tube 

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

 when wetted. 



