Collomia.. POLEMONIACEiE. 135 



alone wants the spiricles, which are so conspicuous on the seed-coat of the gen- 

 uine species, in which they were first detected.) 



* Calyx obconical : leaves sessile, entire or sometimes sparingly incised. 

 ■i— Flowers capitate-crowded and leafy-bracted, or a few of them scattered. 

 C. grandiflora, Dougl. Erect, a foot or two high : leaves linear- or oblong-lanceolate, 

 or uppermost lance-ovate : calyx-lobes broad and obtuse : corolla buff or salmon-color, nar- 

 row-funnelform, an inch long, showy. — Lindl. Bot. Reg. 1. 1174 ; Hook. Bot. Mag. t. 2894. 

 — Plains, &c., from the Rocky Mountains, lat. 48°, to Nevada and California. Var. tenuifolia, 

 Benth., is a form with more slender corolla. 

 C. linearis, Nutt. More branching and in age spreading, a span or two high : calyx- 

 lobes triangular-lanceolate, acute : corolla half inch long, from lilac-purple to nearly white, 

 very slender, little enlarged at the throat; the limb small. — Gen. i. 126; Lindl. Bot. Reg. 

 t. 1166; Hook. Bot. Mag. t. 2983. — Lake Winnipeg and Mackenzie River (and even New 

 Brunswick, on the coast. Fowler, perhaps a chance introduction), west to the Pacific, and 

 south to California and Colorado. Passes into 



Var. subulata. Gray, 1. c. A low and slender form, diffusely branching from the 

 base : leaves narrow and acute : flowers few in the lower forks : calyx-lobes attenuate- 

 subulate ; the tips almost awnlike from a broad base, rather longer than the tube. — C. tinc- 

 toria, Kellogg, Proc. Acad. Calif, iii. 17; t. 2. — Nevada and adjacent parts of California 

 and Oregon. 



■f— ••— Flowers scattered, all solitary in the forks. 

 C. tenella, Gray. Slender, 3 or 4 inches high, loosely branched, viscid : leaves linear 

 with a long tapering base, obtusish : flowers solitary in all the forks, remote, almost ses- 

 sile : calyx-lobes rather broadly triangular, acute, shorter than the broadly turbinate tube, 

 about half the length of the narrow purplish corolla, this 3 or 4 lines long. — Proc. 1. c. ; 

 Watson, Bot. King, 262, & Bot. Calif, i. 488. — Dry hills, Utah and Nevada to eastern and 

 northern parts of California. 



* * Calyx rounded at base : leaves sessile, entire, the lower oftener opposite : flowers rather loosely 

 cymose or scattered. The mucilage-cells of the seed-coat wholly destitute of spiral fibres ! 



C. gracilis, Dougl. At length corymbosely much branched and spreading, 2 to 6 inches 

 high : leaves lanceolate, or linear or the lowest oval or obovate : corolla 5 lines long, pur- 

 ple or violet; the narrow tube yellowish and seldom longer than the subulate-linear 

 lobes of the deeply-cleft calyx. — Benth. in Bot. Reg. no. 1622, & DC. Prodr. ix. 308. 

 Gilia gracilis, Hook. Bot. Mag. t. 2924. CoUomia micrantha, Kellogg, 1. c. fig. 3. — Colorado 

 and New Mexico and from Brit. Columbia south to Arizona. (W. S. Amer.) 



* * * Calyx obtuse or acute at base : leaves all alternate and mostly incised or pinnately divided, 

 all the lower petioled : corolla pinkish-purple, slender, half inch or less long, twice or thrice the 

 length of the calyx. 



C. gilioides, Benth. Stems loosely branching, erect or diffuse, a span to 2 feet long: 

 leaves nearly simply cut or parted into lanceolate or narrowly oblong divisions : flowers 

 loose or scattered : calyx obtuse or rounded at base, deeply cleft ; the lobes linear-subu- 

 late : stamens moderately unequal in insertion : ovules solitary or rarely in pairs : capsule 

 globular. — Gray, Proc. Am. Acad. 1. c. (with var. glutinosa) & Bot. Calif. 1. c. G. gilioides 

 & G. glutinosa, Benth. 1. c, the latter a more viscid state of this variable species. Gilia 

 divaricata, Nutt. PI. Gamb. 155, a slender form. 



C. heterophylla. Hook. Low, diffuse : leaves thin, mostly pinnatifid with the lobes 

 again incised, or bipinnatifid, some of the uppermost less cut or even entire and bract- 

 Uke, subtending the more or less capitate or looser clusters of flowers : calyx acute at 

 base, cleft barely to the middle ; the lobes ovate-lanceolate : stamens very unequally in- 

 serted: ovules 2 or 3 in each cell: capsule ellipsoidal. — Bot. Mag. t. 2895; Bot. Reg. t. 

 1347. Courtoisia bipinnatifida, Reichb. Tc. Exot. t. 208. Gilia Sessei, G. Don. Navarretia 

 heterophylla, Benth. in DC. 1. c — Brit. Columbia to Cahfornia: common. 

 § 2. PhlogjCnthea, Gray, 1. c. Ovules numerous, i. e. 6 to 12 in each cell: 



filaments unequal as well as unequally inserted, sometimes a little declined: 



biennials (sometimes perhaps perennials), or annuals, slightly if at all viscid. 



(Species of Gilia, sect. Ipomopsis, Benth.) 



