PHLOX FAMILY 199 
long, from a huge root. Leaves 2~5 in. long, short-petioled, linear, 
acute. Peduncles short, 1-4-flowered. Sepals broadly ovate, obtuse. 
Corolla pink or purple, funnel-shaped, about 3 in. long. Pod ovoid, 
2-celled. Plains W. and S.W. 
Il. 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- 
celled, 4-seeded. 
1. C. spithameus 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. Trartinc Brxpweep. 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, RutLanp 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. BrnpwrEEp. 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 3 in. long. Calyx not 
bracted. Stigmas linear. A weed in fields E.; adventive from 
Europe. 
84. POLEMONIACEZ. Puiox Famity 
Annual or perennial herbs, rarely shrubs. Leaves alternate 
or the lower opposite, without stipules. Flowers in terminal, 
forking cymes. Calyx hypogynous, 5-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. 
