OF THE WASATCH REGION 73 



1. CONVOLVULUS. Bindweed. 



Twining or prostrate, mostly perennial herbs from slender 

 rhizomes. Flowers axillary; solitary or clustered; large; 

 white, pink or purplish. Corolla open funnel-form. Ovary 

 entire, 1-2-celled; style filiform; stigmas 2, filiform to oblong. 



1. C. arvensis L. Stems slender, prostrate. Leaves slender- 

 petioled; dark-green; usually arrow -shaped and blunt at the 

 apex. Peduncles usually 2-flowered: J-3-bracted just below 

 the flowers. Corolla an inch or less in diameter; white with 

 a pink tinge. Calyx free from the bracts. In fields and waste 

 places. May-September. 



POLEMONIACEJE. Phlox Family. 



Herbs with alternate or opposite leaves. Inflores- 

 cence eymose, corymbose-paniculate or solitary. 

 Flowers perfect; regular or nearly so. Calyx of 5 

 united sepals. Corolla of 5 united petals. Stamens 5, 

 epipetalous; alternate with the corolla-lobes. Pistil 

 consists of 1 filiform style, of 3 linear stigmas (most 

 conspicuous in mature flowers), and of a "superior," 

 mostly 3-celled ovary with axile placentae. Seeds of 

 some genera emitting spiral threads when moistened. 

 Capsule loculicidal. 



Leaves opposite, entire 1. Phlox 



Leaves mostly alternate. 



Corolla salverform or tubular-funnelform 2. Gilia 



Corolla open bell-shaped. . . , 3. Polemoiiium 



1. PHLOX. 



Perennial or rarely annual erect or diffuse herbs (in some 

 species woody at the base). Leaves entire; opposite or the 

 floral leaves alternate. Inflorescence cymose or paniculate. 

 Flowers showy. Calyx tubular, 5-ribbed and 5-cleft. Corolla 

 salverform, with a narrow tube and a 5-lobed limb. Stamens 

 short, unequally inserted on the corolla-tube. Ovary 3-celled; 

 style usually slender. Ovules few. Capsule at length distend- 

 ing and rupturing the calyx-tube. Seeds wingless, or narrowly 

 winged, not developing spiral threads when moistened. 



Leaves linear; flowers more than 1 1. P. longrifolia 



Leaves subulate; flowers solitary 2. P. Hoodli 



1. P. longlfolia Nutt. Wild Sweet William. Many-stemmed 

 from a woody base; pubescent or nearly glabrous; 3-8 inches 

 high. Leaves from narrowly to broadly linear. Calyx angled. 

 Corolla dark pink to white. April-November. In dry soil. 



la. P. longrifolla imberula E. Nelson. (P. puberula (E. Nels.) 

 A. Nels.) Pubescence glandular, especially on the pedicels and 

 calyx. 



