Spring Flora op Oklahoma 
109 
ovuled. Carpels 10-20, arranged in a circle, 1-seeded, beaked 
at the apex, the beak separated from the cavity by a septum. 
Seed ascending. 
Perennials or biennials. 
Involucels present. 
Involucels wanting. 
Lower petioles strigose. 
Lower petioles hirsute. 
Annual. 
1. C. involucrata. 
2. C. alceoides. 
3. C. digitata. 
4. C. pedata. 
1. Callirhoe involucrata (T. & G.) A. Gray. Purple Poppy 
Mallow. Perennial. Stems procumbent or ascending. Leaves round- 
heart-shaped, palmately lobed or cut. Involucel 3-leaved. Peduncles 
long, slender, and 1-flowered. Flowers reddish-purple, l'-2 y 2 ' broad. 
Carpels rugose-reticulate. 
In dry soil. April-August. Common. 
2. Callirhoe alceoides (Michx.) A. Gray. Light Poppy Mallow. 
Perennial. Stems rather slender, 8'-20' high, covered with close- 
lying stiff hairs. Basal leaves triangular-heart-shaped, palmately- 
lobed or incised. Stem leaves palmately divided. Involucel none. 
Flowers pink or white, about 1' broad. Carpels strigose-pubescent 
and conspicuously rugose-reticulate on the back. 
In dry soil. May-August. Oklahoma County. 
3. Callirhoe digitata Nutt. Fringed Poppy Mallow. Resembling 
the preceding species. Sparingly hirsute or glabrous, erect. Leaves 
few, round-cordate, 5-7-parted, the cauline commonly with linear 
divisions. Peduncles sub-racemose, long, filiform. Flowers red-purple 
to white. 
In dry soil. April-July. Frequent. 
4. Callirhoe pedata A. Gray. Tall Poppy Mallow. Annual, 
strigillose or glabrate. Stems 12'-36' tall, simple or branched. Leaves 
suborbicular in outline, palmate 3-5-lobed, cleft or parted, entire or 
toothed. Flowers red-purple or sometimes lilac. Petals 10"-14" 
long, erose at the tip. Carpels slightly wrinkled on the sides. 
In dry soil and hillsides. May-August. Payne and Comanche 
counties. 
III. MALVASTRUM A. Gray. 
Herbs, with entire, cordate or divided leaves, and axil¬ 
lary or terminal, solitary or racemose, short-pedicelled, per¬ 
fect flowers. Calyx 5-cleft. Bractlets of the involucels 
