290 
I. purpurea Lam. Root annual: leaves cordate, entire: peduncles 5 to 12.5 
em. long, 1 to 5-flowered: umbellate pedicels twice as long as calyx, usually refracted 
in fruit: sepals lanceolate, 12 mm. long: corolla violet, purple, or pink, varying to 
white and diversely variegated, about 5 cm. long.—The common and widely cul- 
tivated morning glory, naturalized in the Atlantic States, probably native in southern 
California, and reported from Texas by Berlandier and Jermy (Gillespie County). 
4. I. Lindheimeri Gray. Root perennial: leaves deeply 5-cleft or 5-parted, all or 
the 3 interior lobes ovate or ovate-lanceolate with a much contracted base, the con- 
tracted portion often half the length of the dilated lobe: peduncle 2.5 to 7.5 em. 
long, 1 or 2-flowered: pedicels 6 to 12 mm. long: sepals lanceolate-linear, fully 2.5 
em. long. (J. heterophylla Torr. Mex. Bound., not Ortega. )—Rocky soil, southern and 
western Texas. 
+ + Stigma 2-lobed or entire: cells 2, cach 2-seeded : sepals broader, 
++ Creeping (not twining) perennials, glabrous or nearly so: flowers rather large. 
5. I. Pes-capre Sweet. Herbage succulent: leaves orbicular, mostly emarginate 
at both ends, 2-glandular at base, pinnately many-veined, 5 to 7.5 cm. long: sepals 
oval obtuse: corolla purple: mature pod 2-celled: seeds rusty-pubescent.--Drifting 
sands of the coast. 
6. I. carnosa R. Br. Stem slender, extensively creeping: leaves slightly suceu- 
lent, exceedingly various; earlier oblong or subcordate or emarginate at both ends, 
either entire or fiddle-shaped or 3-lobed; the others sometimes linear, sometimes 
deeply 3 to 5-lobed or parted and lobes narrowed at base: peduncles 1-flowered: 
sepals mucronate or acuminate: corolla white with yellowish throat: pod 4-celled: 
seeds densely villouswoolly. (1. acetosafolia R. & S.)--Sandy seacoast. 
++ ++ Twining (or at first trailing), but not creeping : leaves cordate or sagittate, or with 
divisions broader than linear. 
== Perennials with immense roots: leaves cordate, entire or some 3 to 5-lobed: peduncles 1 
lo sereral-flowered : sepals oblong or ovate, obtuse or merely mucronate, over 12 mm. 
long: corolla over 5 em. long. 
7. I. Jalapa Pursh. Freely twining from anapiform or thick fusiform root (some- 
times weighing 40 or 50 pounds), tomentulose-pubescent, at least the lower surface 
of the shaliow-cordate plicate-veiny repand or lobed leaves: corolla 7.5 to 10 em, 
long, white or light pink-purple; the narrow tube deep purple: ovary imperfectly 
4-celled: seeds densely clothed with long villous wool.—A species of the Gulf States, 
in sandy soil along the coast, reported from southern Texas (Havard). 
8. I. pandurata Meyer. Glabrous or nearly so, trailing or twining from a very 
long and large root (at length weighing 10 to 20 pounds): leaves usually cordate 
and entire, or some of the later angulate or fiddleform-cordate, occasionally hastate- 
3-lobed: corolla 5 to 7.5 cm, Jong, white with a dark-purple throat: ovary only 
2-celled: seeds woolly on the angles.—Dry ground, extending from the Atlantic States 
into Texas. 
== Perennial with thick root: leaves all sagittate: peduncle mostly 1-flowered : sepals 
as in preceding, but barely 12 mm, long: corolla proportionally very large. 
9. I. sagittata Cav. Glabrous: leaves deeply sagittate, otherwise entire; some 
with linear-lanceolate lobes; some larger and broader, with ovate-lanceolate outline 
and oblong obtuse basal lobes: corolla pink-purple, 5 to 7.5 em. long.—Salt marshes 
on the coast, and in saline localities through southern Texas and west of the Pecos. 
== = Perennials with roots not very large, or annuals : corolla 3.6 em. long or smaller. 
a. Calyx almost 25 mm. long, large for size of corolla. 
10. I. sinuata Ortega. Root perennial]: stem and petioles hirsute with long spreading 
hairs: leaves nearly or quite glabrous, 7-parted ; the divisions lanceolate or narrowly 
oblong, sinuately and laciniately pinnatifid or incised; calyx equaling throat of 
