PHLOX FAMILY 199 



long, from a huge root. Leaves 2-5 in. long, short-petioled, linear, 

 acute. Peduncles short, 1-4-flowpred. Sepals broadly ovate, obtuse. 

 Corolla pink or purple, funnel-shaped, about 3 in. long. Pod ovoid, 

 2-oelled. Plains W. and S.W. 



n. CONVOLVULUS L. 



Herbs or shrubs, with stems twining or nearly erect. Calyx 

 not bracted, or inclosed in 2 large, leaf-like bracts. Corolla 

 broadly funnelform or bell-shaped. Stamens not projecting 

 from the corolla. Style 1 ; stigmas 2 ; ovary and pod 1-2- 

 eelled, 4-seeded. 



1. C. spithamsus L. Downy, stem 6-12 in. high, erect or reclin- 

 ing. Leaves oblong, sometimes heart-shaped or eared at the base. 

 Flowers white. Calyx inclosed by 2 large, oval, acutish bracts. Stig- 

 mas stout. In sandy soil. 



2. C. repens L. Trailing Bindweed. Stems downy, 1-3 ft. 

 long, trailing or twining. Leaves sometimes heart-shaped, often nar- 

 rowly arrow-shaped, with the lobes at the base obtuse or rounded. 

 Peduncles 1-flowered. Corolla white, or sometimes pink. Stigma 

 ellipsoidal. Bracts beneath the calyx 2, ovate. In fields. 



3. C. sepium L. Creepers, Rutland Beauty. Stem twining or 

 sometimes extensively trailing. Leaves heart-arrow-shaped or some- 

 what halberd-shaped, the lobes at the base truncate. Flowers numer- 

 ous and showy, white or tinged with rose color. Bracts at the base 

 of the flower large, ovate, heart-shaped. Thickets and banks of 

 streams, often cultivated. 



4. C. arvensis L. Bindweed. A perennial, prostrate or climbing 

 herb, with many stems, from a long, slender rootstock. Leaves very 

 variable, more or less arrow-shaped, 1-3 in. long. Peduncles mostly 

 1-flowered; flowers white or pinkish, about | in. long. Calyx not 

 bracted. Stigmas linear. A weed in fields E. ; adventive from 

 Europe. 



84. POLEMONIACEiE. Phlox Family 



Annual or perennial herbs, rarely shrubs. Leaves alternate 

 or the lower opposite, without stipules. Flowers in terminal, 

 forking cymes. Calyx hypogynous, 6-lobed. Corolla regular 

 or nearly so, 5-parted. Stamens 5, inserted on the corolla tube, 

 usually unequal. Ovary 3-celled ; style simple ; stigmas 3, 

 linear ; capsule 3-celled, the cells 1-many-seeded. 



