60 POLEMONIACEAE, Vou. IL. 
Flowers in dense or capitate cymes, or heads; flower-clusters leafy-bracted. 
Perennial; corolla-tube not longer than the calyx. 5. G. iberidifolia, 
Annual; corolla-tube 2-3 times as long as the calyx. 6. G. pumila, 
Corolla rotate; leaf-segments acicular. 7. G.acerosa, 
1. Gilia longiflora (Torr.) Don. White-flowered Gilia. Fig. 3472. 
Cantua longiflora Torr. Ann. Lye, 2: 221. 1827. 
Gilia longiflora Don, Gard. Dict. 4: 245. 1838. 
Collomia longifl. A. Gray, Proc. Am. Acad. 8: 261, 1870, 
Annual, glabrous, paniculately branched, 1°-2° 
high. Leaves all alternate, sessile, 1’-24’ long, pin- 
nately divided into linear-filiform segments or the 
uppermost entire; flowers numerous, white, panicu- 
late, about 2’ long; calyx-teeth triangular-lanccolate, 
actuninate, shorter than the tube; corolla salverform, 
its tube narrow, 4 or 5 times as long as the orbicular 
or ovate, rounded or pointed, spreading lobes; sta- 
mens unequally inserted; ovules 8-12 in each cell; 
capsule narrowly oblong, exceeding or equalling the 
calyx; seed-coat mucilaginous and emitting spiral 
threads when wetted. 
In dry soil, Nebraska and Colorado to Texas and Ari- 
zona. May-Sept. 
Gilia ribra (L.) Heller (Gilia coronopifolia Pers.), a 
related species with less spreading corolla-lobes, is com- 
monly cultivated, and rarely escapes from gardens to 
roadsides and waste grounds, 
2. Gilia aggregata (Pursh) Spreng. Scar- 
let Gilia. Fig. 3473. 
Cantua aggregata Pursh, Fl. Am. Sept. 147. 1814. 
Gilia aggregata Spreng, Syst. 1: 626, 1825. 
Biennial, pubescent or puberulent; stem simple’ 
or sparingly branched, 2°-4° high, leafy at least 
below. Leaves alternate, the basal often tufted, 
mostly petioled, 1’-3 long, pinnately parted into 
narrowly linear segments; inflorescence narrowly 
thyrsoid-paniculate, often 12’ long; flowers ses- 
sile or very nearly so in small peduncled clusters, 
scarlet or red; corolla tubular-funnelform, the 
tube 1’-14’ long, slightly thicker upward, the limb 
cleft into ovate or lanceolate acute or acuminate 
spreading or recurved lobes; stamens unequally 
or about equally inserted in the throat; ovules 
numerous; seeds mucilaginous and emitting spiral 
threads when wetted. 
In dry soil, western Nebraska (according to 
Coulter) to Texas and Mexico, west to British 
Columbia and California. June—Aug. 
3. Gilia pinnatifida Nutt. Small-flowered 
Gilia. Fig. 3474. 
Gilia pinnatifida Nutt.; A. Gray, Proc. Am, Acad, 8: 
276. 1870, 
Biennial or perennial from a deep root, much 
branched, viscid-glandular, 6’-2° high. Leaves 
thick, pinnatifid, the basal tufted, 1’-3’ long, the 
segments linear-oblong, sometimes toothed, ob- 
tuse or acutish, 2”-6” long, those of the stem 
altcrnate, smaller, the uppermost minute and en- 
tire; flowers very numerous, small, paniculate, 
some sessile, some petioled; calyx 5-lobed, the 
lobes lanceolate to ovate; corolla salverform, 
3-5” long, the limb violet or blue, its white tube 
longer than the calyx and its obovate lobes; sta- 
mens exserted; seeds not mucilaginous nor emit- 
ting spiral threads when wetted. 
In sandy soil, western Nebraska and Wyoming to 
New Mexico, Has been mistaken for G. inconspicua, 
June-Aug. 
