138 
Spring Flora of Oklahoma 
Hoods purple. Follicles nearly erect on the re-curved, fruiting pedi¬ 
cels, 3'-4' long. 
In dry soil. April-June. Common. 
FAMILY 72. CONVOLVULACE^E. Morning-Glory. 
Family. 
Herbs or shrubs, the stems twining, ascending, trail¬ 
ing or erect. Leaves alternate, entire, dentate, lobed or 
dissected. Flowers regular, perfect. Sepals 5. Corolla 
hypogynous, tubular, bell-shaped or funnel-shaped, .its 
limb more or less 5-lobed or angled. Stamens 5, inserted 
on the corolla tube. Ovary usually 2-4-celled. Style 
slender, 2-4 cleft. Ovules 1 or 2 in each cell. Capsule 
1-4 celled, 2-4 valved, or bursting open across the base. 
Style 2-cleft or 2-divided. I. Evolvulus. 
Style entire up to the stigma. 
Stigma or stigmas capitate or globose. II. Ipomoea. 
Stigmas 2, filiform to oblong. III. Convolvulus. 
I. EVOLVULUS L. 
Small, prostrate or dilfuse perennials with more or less 
densely pubescent stems and small, simple, entire leaves. 
Flowers solitary in the axils. Sepals nearly equal. Co¬ 
rolla funnel-form or nearly rotate, white or blue, the 
limb entire. Ovary 2-celled. Capsules sub-globose, 2-4- 
valved. 
1. Evolvulus pilosus Nutt. Evolvulus. Perennial, deeply silky- 
pubescent or villous. Stem 3'-9' high. Leaves sessile, oblong, lance¬ 
olate or spatulate, 3"-9" long. Flowers solitary and nearly sessile 
in the axils. Peduucles recurved in fruit. Corolla funnel-form, cam- 
panulate, purple or blue, 3"-4" broad. Capsule iy 2 "-2" in diameter. 
On dry plains. May-July. Frequent. 
II. IPOMOEA L. 
Twining, trailing, or erect, annual or perennial herbs, 
