Spring Flora of Oklahoma 
139 
mostly with large showy flowers. Sepals usually unequal. 
Corolla funnel-form to trumpet-shaped, plicate, and gen¬ 
erally convolute, the limb from entire to lobed. Stamens 
included. Style slender, with capitate stigma. Capsule 
globular, 2-4-celled. 
Leaves cordate; stems trailing or twining 
1. 7. pandumta. 
.Leaves linear; stems ascending or erect. 
2. 7. leptophylla. 
1. Ipomoea panduiata (L.) Meyer. Wild Potato Vine. Peren¬ 
nial. Stems trailing or feebly climbing, leaves broadly ovate, cor¬ 
date, entire. Peduncles 1-5 flowered. Corolla funnel-form, white, or 
with pinkish^purple stripes in the throat, -3' long. Capsule ovoid, 
the seeds densely woolly on the margins and pubescent on the sides. 
In dry soil. May-September. Along Cimarron River. 
2. Ipomoea leptophylla Torr. Bush Morning Glory. Peren¬ 
nial from an enormous root. Stems erect, ascending or reclining. 
Leaves narrowly linear, entire, 2'-5' long. Penduncles 1-4-flowered. 
Corolla funnel-form, purple or pink, about 3' long. Capsule ovoid. 
In dry soil. May-July. Frequent in soil underlaid with sand¬ 
stone. 
III. CONVOLVULUS L. 
Perennial herbs with trailing, twining or erect stems. 
Leaves entire, dentate or lobed, mostly cordate or sagittate 
and petioled. Flowers axillary, solitary, or clustered, large, 
pink, purple or white. Sepals equal or unequal, often a pair 
of bracts at their base. Corolla campanulate to funnel- 
form, plicate, the limb entire or lobed. Stamens inserted 
on the tube, included. Stigmas two, filiform or oblong. 
Capsule globose, usually 2-celled. 
Calyx with two large bracts at the base, which en¬ 
close it. 
Stems trailing or climbing. 1. C. repens. 
Stem erect or ascending; flowers white; bracts not 
cordate. 2. C. spithamaeus. 
Calyx not bracted; peduncle bracted at the summit. 
Glabrous or nearly so; leaves entire, auriculate. 
3. C. arvensis. 
