Genus i. 



PHLOX FAMILY 



17. Phlox Douglasii Hook. Douglas' 

 Phlox. Fig. 3470. 



P. Douglasii Hook. Fl. Bor. Am. 2 : 73. pi. 1 jS. 1834. 

 PI1I0.Y Douglasii andicola Britton, Mem. Torr. Club 



5 : 269. 1894. 

 Phlox Douglasii longifolia A. Gray, Proc. Am. Acad. 



8: 254. 1870. Not P. longifolia Nutt. 



Similar to the preceding species; leaves pubes- 

 cent or glabrous, less imbricated, sometimes 

 spreading, rigid, usually fascicled at the nodes, 

 4"-l2" long. Flowers solitary and sessile or 

 short-pedicelled at the ends of the branches, 

 5"-8" long ; calyx-teeth narrowly lanceolate, 

 acuminate, about equalling the tube; tube of the 

 purple or white corolla longer than the calyx, its 

 lobes obovate, entire. 



Dry soil, Nebraska and Montana to Utah, Cali- 

 fornia and British Columbia. May-July. 



2. MICROSTERIS Greene, Pittonia 3: 300. 1898. 



Much-branched annual herbs, with entire leaves, all but the floral ones opposite, the small 

 flowers solitary or in pairs in the upper axils. Calyx mostly campanulate, 5-cleft, scarious 

 between the lobes. Corolla salverform, with a slender tube and a 5-lobed limb. Stamens 

 short. Ovary 3-celled. Capsule at length distending and rupturing the calyx-tube. Seeds 

 few and large, mucilaginous when wetted, but not emitting spiral tubes. [Greek, small Steris.] 



About 6 species, of western North America. Type species : Microsteris gracilis (Dougl.) Greene. 



i. Microsteris micrantha (Kellogg) Greene. 

 Small-flowered Microsteris. Fig. 3471. 



Collomia micrantha Kellogg, Proc. Cal. Acad. 3: iS. 

 186.;. 



M. micrantha Greene, Pittonia 3: 303. 1898. 



Annual, pubescent, at length corymbosely much 

 branched, 2'-6' high, the branches ascending. Lower 

 and basal leaves oblong to spatulate, obtuse, com-' 

 monly opposite and nearly sessile, the upper linear 

 or lanceolate, sessile, i'-l' long, i"-2" wide, opposite 

 or alternate, entire; cymes 1-5-flowered ; calyx-lobes 

 linear-subulate, usually longer than the tube ; corolla 

 about 4" long, the tube yellowish, narrow, equalling 

 or slightly longer than the calyx, the lobes purple or 

 violet, short ; ovules 2 or 3 in each cavity ; capsule 

 oblong, obtuse, as long as or longer than the calyx- 

 tube. 



In dry or moist soil, western Nebraska to Wyoming, 

 Colorado, New Mexico, Arizona and California. In our 

 first edition referred to the northwestern M. gracilis 

 (Dougl.) Greene. April-Aug. 



3. GILIA R. & P. Prodr. Fl. Per. 47. 1798. 

 Herbs with opposite or alternate, entire pinnatifid palmatifid or dissected leaves. Flowers 

 small or large, solitary, cymose, capitate, thyrsoid, or paniculate. Calyx campanulate or 

 tubular, 5-toothed or 5-cleft, the sinuses scarious. Corolla funnelform, tubular, campanulate, 

 rotate or salverform, 5-lobed, the lobes ovate, oblong, or obovate. Stamens equally or 

 unequally inserted on the corolla, included or exserted. Ovary oblong or ovoid, 3-celled ; 

 ovules solitary or several in each cavity. Capsule ovoid or oblong, 3-celled, at length dis- 

 tending and rupturing the calyx. Seed-coat commonly mucilaginous when wetted, in some 

 species emitting thread-like tubes. [Named for Philip Gil, a Spanish botanist.] 



About 100 species, natives of America. Besides the following, many others occur in the south- 

 ern and western parts of North America. Type species : Cilia laciniata R. & P. 



Corolla funnel-form to salverform ; leaves pinnatifid or pinnately divided, the segments linear, not 

 rigid. 

 Flowers thyrsoid-paniculate or corymbose-paniculate. 

 Corolla i' 2' long; plants i-4 tall. 



Flowers paniculate, white. I. G. longiftora. 



Flowers narrowly thyrsoid. red. 2. G. aggregata. 



Corolla 3"-5" long, violet or blue. 3- G. pinnatifida. 



Flowers narrowly thyrsoid-spicate. 4. G. spicata. 



