DICOTYLEDONOUS PLANTS 185 
1. I. hederacea, Jacq. Witp Morninc-ctory. Stems hairy, 
twining. Leaves heart-shaped, 3-lobed. Peduncles 1—3-flowered. 
Calyx very hairy below. Corolla showy, bluish-purple or white. 
Pod usually 3-celled, with 2 seeds in each cell. A weed in fields. 
and about dwellings; introduced from tropical America. 
2. I. pandurata, Meyer. Wuitp Potato VINE. Perennial, from 
a very large, tuberous root; stem trailing or twining, smooth or 
slightly downy, 5-10 ft. long. Leaves broadly heart-shaped, with 
the apex slender and obtuse, sometimes fiddle-shaped or 3-lobed ; 
petioles slender. Peduncles longer than the petioles, 1—5-flowered. 
Sepals oblong, obtuse, smooth, mucronate, the 2 outer ones shorter. 
Corolla white with a purple throat, 2-3 in. wide, lobes pointed. 
Capsule globose, 2+5-seeded, the seeds woolly on the angles. On 
dry or damp, sandy soil, along fences, railroad embankments, etc., 
common 8S. and W.* 
83. POLEMONIACEZ. Putiox FamIty. 
Annual or perennial herbs, rarely shrubs. Leaves alter- 
nate or the lower opposite, without stipules. Flowers in ter- 
minal, forking cymes. Calyx free from the ovary, 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. 
I. PHLOX, L. 
Perennial or rarely annual herbs; stems erect or diffuse. 
Leaves opposite, or the upper alternate, entire, without stip- 
ules. Flowers showy, white or purple, in terminal cymes 
or panicles. Calyx cylindrical or funnel-form, 5-cleft, the 
lobes acute. Corolla salver-form, the tube long and slender, 
the limb 5-parted, the lobes spreading, entire or obcordate. 
Stamens included, unequal. Ovary 3-celled, style slender. 
Capsule ovoid, 3-celled, 1-few-seeded; seeds wingless or 
narrow-winged.* 
1. P. paniculata, L. Garpen Puiox. Perennial; stems in 
clumps, stout, erect, simple or branched above, 2-4 ft. high. Leaves 
ovate-lanceolate to oblong, taper-pointed at the apex, rounded or 
cordate at the base, thin, smooth, veins prominent beneath. Cymes 
numerous and compact, forming a pyramidal panicle; pedicels short. 
