Spring Flora of Oklahoma 
119 
Leaves alternate, entire or toothed. Flowers perfect, yel¬ 
low, axillary. Calyx-tube slender, narrowly funnel-form, 
longer than the ovary. Petals 4, spreading. Stamens 8. 
Ovary 4-celled, elongated. Stigma disk-like, entire. Cap¬ 
sule elongated, narrowed at the base, curved. Seeds some¬ 
times tuberculate. 
1. Galpinsia Hartwegii (Benth.) Britton. Galpinsia. Stems 
more or less branched, but not densely tufted, mostly 8'-16' tall. 
Blades linear, 5"-15" long, entire, or slightly repand-denticulate. 
Calyx-tube elongated, gradually dilated. Petals 8"-14" long. Cap¬ 
sule narrowly cylindric, 6"-12" long. 
Plains and prairies. April-Fall. Kingfisher and Grady counties. 
VII. MERIOLIX Raf. 
Biennial or perennial herbs with branched stems, some¬ 
times becoming shrubby. Leaves alternate, narrow, entire, 
or sharply serrate. Flowers perfect, regular, axillary, yel¬ 
low. Calyx-tube funnel-form, shorter than the ovary. 
Calyx-segments narrow, keeled on the back, Petals 4, often 
blotched at the base. Stamens 8. Ovary 4-celled, 4-angled. 
Stigma disk-like, 4-toothed. Ovules numerous. Capsule 
linear, 4-angled, 4-celled, sessile. Seeds longitudinally 
grooved. 
1. Meriolix serrulata (Nutt.) Walt. Tooth-leaved Primrose. 
Erect, simple or branched, canescent or glabrate, 4'-18' high. Leaves 
linear-oblong, lanceolate or oblanceolate, usually sessile, sharply den¬ 
tate or denticulate, l'-3' long, 2"-3" wide. Flowers yellow, axillary, 
6"-2' broad. Calyx-tube funnel-form, silvery canescent. Petals ob- 
ovate, crenulate. Stigma discoid. Capsule sessile, linear-cylindric, 
silvery canescent, 8"-15" long, about 1" thick, slightly grooved longi¬ 
tudinally. 
In dry soil. May-July. Common. 
VIII. GAURA L. 
Annual, biennial, or perennial herbs, somewhat woody at 
the base, with alternate, narrow, sessile leaves, and white, 
pink, or red flowers in terminal spikes or racemes. Calyx 
usually pubescent, 4-lobed, the lobes reflexed. Petals 4, 
clawed, unequal. Stamens 8, declined. Ovary 1-celled. 
Stigma 4-lobed, surrounded by a cup-like border. Ovules 
