POLEMONIACE^ 



113 



2. C. arvensis, Beyrioh. 



Corolla lobes sharp, incurved, longer than the tube. Dry sandy ridges, 

 climbing on such plants as Lygodesmia juncea, and Artemisia frigida. Man. 

 and westward. (Maooun.) 



LXXI. POLEMONIACEiE (Phlox Family). 



Innocent, and often ornamental herbs with usually simple leaves, 

 either opposite or alternate, and regular flowers. Calyx interior, 

 tubular, 5-cleft; corolla gamopetalous, funnel-form or salver- 

 shaped; stamens 5, inserted on the tube of the corolla and alternate 

 with the lobes; ovary mostly S-ceUed and many-ovuled. 



■ 1. PHLOX. 



Calyx tubular, 5-cleft; corolla 5-lobed; salver-shaped, with a 

 narrow tube; stamens short, included, inserted unequally on the 

 corolla tube; ovary 3-celled ; style slender; ovules 1-4 in each cell. 

 Perennial or annual herbs, either erect or diffuse, with opposite 

 entire leaves, and flowers solitary or in terminal cymes. 



1. P. Hoodii, Richards. 



Low, diffuse, and branched, forming a mat on the ground from a woody root ; 

 leaves erect, crowded on the stem, linear, rigid; flowers white, solitary, and 

 sessile, at the ends of branches. Dry sandy prairie, Man.-Alta. 



2. P. canescens, T. and G. 



Resembling the preceding, but the corolla tube yellowish, hairy at the base 

 within, and twice as long as the calyx. Turtle Mts. (Dawson) , Cypress Hills,' 

 (Macoun.) 



3. P. alyssifdlia, Greene. 



Stems stout and prostrate; leaves oblong-linear, thickish, hard and white 

 on the margins; flowers few, large, purple or white. Gravelly hills, S. Sask. 

 (A. Nelson.) 



4. P. pildsa, L. 



Slender, erect, 1-3 ft. high, usually pubescent; leaves lanceolate to linear, 

 calyx teeth sharp and narrow; corolla lobe's scarcely or not at all notched; 

 flowers pink to purple, in compact leafy cymes. Open sandy woods. Vicin- 

 ity of Winnipeg. (Bourgeau.) West to the Saskatchewan River. (Gray.) 



2. GILIA. 



Calyx lobes sharp and narrow, the tube thin and dry; leaves 

 usually alternate ; ovules solitary or few. Otherwise as Phlox. 

 I 



