44 
Spring Flora of Oklahoma 
leaves. Stipules none. Sepals 3. Petals about 6, arranged 
in 2 series. Stamens many. Anthers adnate, extrorse. 
Carpels many. 
I. ASIMINA Adans. 
Small trees, or shrubs, with alternate leaves and lateral 
or axillary nodding flowers. Buds naked. Sepals 3, ovate. 
Petals 6, arranged in 2 series, those of the outer series larg¬ 
er when mature. Stamens and carpels 3-15. Fruit large, 
fleshy, oblong berries. 
1. Asimina triloba (L.) Dunal: North American Papaw. A 
tall shrub or tree. Leaves obovate, acute, cuneate or rounded at 
the base. Flowers axillary, on shoots of the preceding year, appear¬ 
ing with the leaves, dark purple. Sepals ovate, densely dark-pubes¬ 
cent. Fruit 3'-7' long, l'-2' thick, sweet and edible, and brown when 
ripe. 
Along streams, eastern part of state. March-April. 
FAMILY 25. RANUNCULACEiE. Crowfoot Family. 
Herbs, annual or perennial, with acrid sap. Leaves 
basal or alternate (except in Clematis). Stipules none 
or adnate to the petiole. Floral organs all distinct and 
unconnected. Sepals 5 or more, falling early, often petal¬ 
like. Petals none, or 5 or more. Stamens many. Carpels 
many, 1-celled. Stigmas simple. Ovules 1 or more. 
Fruit 1-seeded achenes or many-seeded follicles. Seeds 
small. 
Carpels several-ovuled; fruit a follicle or berry; sepals 
imbricated in the bud. 
Flowers regular; leaves palmately nerved or palm- 
ately compound. • I. Hydrastis. 
Flowers irregular. II. Delphinium. 
Carpels 1-ovuled; fruit an achene. 
