690 POLEMONIACEAE 



2.- L. pungens (Torr.) Nutt. Suffmticose perennial, 1-3 dm. high; leaves 

 5-8 mm. long, puberulent, but not glandular, or glabrate, digitately 3-7-divided, 

 with linear-subulate, straight, ascending divisions; flowers axillary, solitary; calyx 

 tubular, 5-ridged, about 1 cm. long, glabrate; teeth subulate, pungent, much 

 shorter than the tube; corolla yellow or yellowish, 15-20 mm. long; lobes about 

 5 mm. long, oblong. Gilia pungens (Torr.) Benth. Sandy valleys and hill- 

 sides: Mont. Colo. Calif. B.C. Plain Mont. Je-Jl. 



3. L. brevifolium Rydb. Suffruticose, branched perennial, 1-2 dm. high; 

 stems puberulent and slightly glandular above; leaves 3-5 mm. long, glandular- 

 puberulent or glabrate, 3-5-divided into subulate, acerose ascending divisions; 

 calyx about 8 mm. long, glandular-puberulent; teeth subulate-acerose, much 

 shorter than the tube; corolla about 15 mm. long. Dry hills: Utah Wash. 

 (? Colo.). Son. Je. 



4. L. patens Heller. Suffruticose perennial, 1-3 dm. high; branches puberu- 

 lent; leaves 5-7 mm. long, curved, 3-7-divided into subulate divisions, puberu- 

 lent or glabrate, somewhat glandular; calyx 7-8 mm. long, glandular-puberulent; 

 teeth subulate, erect, shorter than the tube; corolla about 15 mm. long, trumpet- 

 shaped; lobes oblong, about 6 mm. long; stamens inserted in the throat. Gilia 

 pungens squarrosa A. Gray. Arid regions: Utah Ariz. Nev. Son. Je-Jl. 



5. L. Watsonii (A. Gray) Rydb. Suffruticose perennial; stems erect, 5-15 

 cm. high; branches glandular-pubescent; leaves opposite, palmately 3-7-divided, 

 with narrowly linear acerose divisions, glandular-pubescent; calyx tubular, 

 glandular-ciliate ; teeth subulate, much shorter than the tube; corolla white, with 

 a purplish throat, 18-25 mm. long; lobes oval, nearly as long aa the tube. G. 

 Watsonii A. Gray. Cliffs and rocky hills: Utah Colo. Son. Submont. My-Jl. 



6. L. Nuttallii (A. Gray) Rydb. Perennial, with a woody base; stems 

 numerous, erect, 1-3 dm. high, crisp-puberulent; leaves palmately 3-7-divided 

 into linear or linear-filiform divisions, or the lower ones entire; flowers axillary, 

 clustered at the ends of the stems; calyx tubular, villous; teeth lance-subulate; 

 corolla 1-2 cm. long, salver-shaped, white with a yellow throat; lobes oval. Gilia 

 Nuttallii A. Gray. Mountains: Wash. Wyo. N.M. Calif. Mont. Subalp. 

 My-Au. 



8. GILIA R. & P. 



Annual, biennial, or perennial herbs. Leaves all or at least the upper ones 

 alternate, entire to pinnatifid. Flowers perfect, mostly cymose. Calyx cam- 

 panulate; tube more or less hyaline in the sinuses and bursted by the fruit; lobes 

 subequal. Corolla trumpet-shaped or salverform, with an open salverform 

 throat. Stamens 5, usually equally high inserted. Capsule usually many 

 seeded; seeds changed when wetted, mucilaginous and usually spirilliferous. 



Flowers capitately or spicately glomerate. 



Plant strigose or short-villous (nearly glabrous in G. nuda) ; floVers leafy-bracted. 

 Perennials; flowers in dense heads or spikes. I. CONGESTAE. 



Annuals, repeatedly branched, with small clusters of flowers in the axils of the 



leaves, more capitate at the ends of the branches. II. PUMILAE. 



Plants glabrous; flowers in long-peduncled heads, not leafy-bracted. 



III. CAPITATAE. 



Flowers openly paniculate or thyrsoid-paniculate. 

 Leaves pinnately divided. 



Corolla-tube over 1 cm. long; calyx-lobes lanceolate, attenuate and spine-tipped; 



biennials. 



Inflorescence thyrsoid, narrow. IV. AGGREGATAE. 



Inflorescence open and inclined to be flat-topped. V. LONGIFLORAE. 



Corolla-tube less than 1 cm. long. 



Stamens conspicuously exserted; corolla nearly salverform; biennials. 



VI. PINNATIFID AE. 

 Stamens not exserted, or barely so; corolla with a more or less funnelform 



throat; annuals. VII. INCONSPICUAE. 



Leaves entire or the lower ones toothed or lobed. 



Leaves not filiform. VIII. LEPTOMERIAE. 



Leaves or their divisions filiform; annuals. IX. MINUTIFLORAE. 



I. CONGESTAE. 

 Leaves entire. 



Plant 3-4 dm. high, Suffruticose. 1. G. frutescens. 



