PHLOX FAMILY 697 



flowering stems 3-7 cm. long, 1-5-flowered; leaves much reduced; calyx about 4 

 mm. long; lobes subulate; corolla trumpet-shaped, fully 1 cm. long. G. Grayi 

 A. Ncls. Valleys: Utah. Suhinonl. 



46. G. sinistra M. E. Jones. Stem with ascending branches, 2-3 dm. high, 

 glandular-puberulent; leaves entire, linear or lance-linear, 1-3 cm. long, 2-4 mm. 

 wide; calyx in flower, about 2 mm. long, somewhat enlarging in fruit, at last 

 bursted by the capsule; lobes subulate; corolla light blue, 5 mm. long. Collomia 

 sinistra Brand. Gumbo soil: Ida. Son. Jl. 



47. G. minutiflora Benth. Stem much branched and leafy, 2-5 dm. high, 

 minutely glandidar-puberulent or glabrate; leaves linear-filiform, entire or some 

 of the lower 3-cleft, those of the inflorescence reduced and subulate; calyx L5-2 

 mm. long; teeth subulate, about 1 mm. long; corolla white. C. linoides Nutt. 

 Plains and sandy places: B.C.— Mont. — Colo. — Ore. Plain — Submont. Jl-Au. 



48. G. tenerrima A. Gray. Stem erect, filiform, diffusely branched, 

 glandular-puberulent, 5-15 cm. high; leaves linear, 1-5 cm. long, entire, the 

 upper braot-like; flowers axillarj^; calyx short-campanulate; tube about 1 mm. 

 long; teeth triangular, shorter; corolla white, about 3 mm. long; lobes oblong, 

 equalling the tube; ovules solitary in each cell. Sandy soil: Mont. — ^Wyo. — 

 Utah — Ore. Plain — Submont. My-Jl. 



9. LANGLOISIA Greene. 



Low annuals. Leaves alternate, pinnatifid, the lower segments modified 

 into bristles, the upper bristle-tipped. Flowers perfect, in terminal involucrate 

 heads; bracts with bristle-tipped lobes. Calyx campanulate or tubular, 5-cleft; 

 lobes equal, bristle-tipped; tube in fruit cleft to the base. Corolla with a cylin- 

 dric tube and funnelform limb, regularly 5-lobed or more or less 2-lipped. Sta- 

 mens inserted in the throat, often more or less declined. Ovary 3-celled, with 

 3-8 ovules in each cell. Capsule loculicidal; seed submucilaginous when wetted. 



Corolla almost regular and stamens nearly straight. 1. L. setosissima. 



Corolla bilabiate and the stamens declined, curved. 2. L. Schottii. 



1. L. setosissima (A. Gray) Greene. Annual; stem branched from the 

 base, 3-8 cm. high, crisp-hairy; leaves glabrous, pinnatifid, the upj)er divisions 

 deltoid, setaceously tipped; calyx-teeth terminated by a long bristle; corolla 

 white, about 15 mm. long; lobes oval. Gilia setosissima A. Gray. Desert 

 regions: Ariz. — Ida. — Nev. — Cahf. Son. Mr-My. 



2. L. Schottii (Torr.) Greene. Annual; stem branched from the base, vil- 

 lous or glabrate, 2-10 cm. high; leaves pinnatifid; upper lobes lanceolate, bristle- 

 tipped; calyx tubiflar; teeth subulate, villous, longer than the tube, with long 

 bristle-points; corolla white, half longer than the cal>^; lobes oblong. G. Schottii 

 S. Wats. Desert regions: Ariz. — s Utah — Cahf.— Sonora. L. Son. Ap-Je. 



10. LINANTHUS Benth. 



Erect, glabrous slender annuals. Leaves all opposite, 3-5-divided into 

 filiform divisions or the lower entire and filiform. Flowers regular, axillary. 

 Calyx-tube white-scarious, ruptured by the fruit; lobes acerose. Corolla short- 

 salver-shaped or with a short tube and a funnelform throat; lobes broadly cuneate, 

 minutely erose or denticulate, convolute in bud. Stamens included in the tube 

 of the corolla. Capsule cylindric or oblong. Seed-coat not producing spiracles 

 when wetted. 



Corolla short salver-shaped or campanulate. 



Calyx 7-8 mm. long; corolla 10-15 mm. long; stamens inserted in the middle of the 



tube. 1. L. Bigelovii. 



Calyx 4 mm. long; corolla G-7 mm. long; stamens inserted near the base of the tube. 



2. L. Daclylophyllum. 

 Corolla with a funnelform throat and short tube. 



Corolla more than twice as long as the hirsute or strigose calyx. 



3. L. pharnaceoides. 

 Corolla about half longer than the glabrous calyx. 4. L. Harknessii. 



20* 



