This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Perennial, woolly-tomentose; stems erect, rather stout, simple, solitary, or 2-4 from the woody root, 6'-18' high. Leaves alternate, narrowly linear, pinnately parted into 3-5 linear segments, or some or many of them entire, 1'-2' long; flowers in an elongated narrow spicate thyrsus, sessile in small clusters, purplish, 4"-6" long; tube of the corolla somewhat exceeding the calyx, considerably longer than the ovate-oblong lobes; calyx-lobes acuminate; anthers equally inserted in the throat.
In dry soil, western Nebraska to Wyoming and Utah. May-Aug.
Perennial by a deep root, woolly-tomentose, at least when young, branched from the base or also above, 3'-18' high. Leaves mostly petioled, ¥-2' long, pinnately divided into 3-9 narrowly linear sharp-pointed segments, or the uppermost entire; flowers white, densely capitate-clustered, 2"-3" long, the clusters bracted by the upper leaves, 1/2'-1' broad, sometimes corymbed; calyx-lobes awn-like; corolla-tube about the length of the calyx, slightly longer than the oval lobes; filaments equally inserted in or below the sinuses of the corolla; ovules 1-4 in each cavity.
In dry soil, South Dakota to Nebraska, Colorado, California, Montana and Idaho. In our first edition included in the similar G. congesta Hook. May-Aug.
Gilia pumila Nutt. Journ. Acad. Nat. Sci. Phila. (II.) 1: 156. 1848.
Annual, branched from the base and sometimes also above, woolly at least when young, 3'-8' high. Leaves alternate, thick, 1/2'-1' long, pinnately divided into linear mucronulate sometimes lobed segments, or the uppermost entire; flowers in dense or at length looser simple or compound cymes, sessile; corolla 3"-4" long, its tube about 3 times the length of the lobes and twice as long as the calyx; calyx-lobes awn-like; stamens inserted in or below the sinuses of the corolla, somewhat exserted; ovules 5 or 6 in each cavity.
In dry soil, western Nebraska to Texas, Idaho, Nevada and New Mexico. April-June.
Gilia tricolor Benth., of California, admitted into our first edition as recorded escaped from gardens to roadsides at Lincoln, Nebraska, is not known to have become established within our area.
Perennial, from a woody base, 4'-7' high, glandular-pubescent, bushy-branched, the slender branches erect-ascending. Leaves 1' long or less, pinnately parted into 3-7 acicular entire segments; flowers scattered, on slender pedicels 1' long or less; corolla rotate, about 10" wide, its lobes rounded at the apex, abruptly contracted at the base; filaments filiform; anthers oblong; capsule about as long as the calyx-tube.
Rocky and gravelly soil, Kansas to Texas, Mexico and New Mexico. April-Aug.