146 
Spring Flora of Oklahoma 
ing, diffuse or erect herbs. Leaves alternate, entire. 
Flowers small, blue, pink, or white, in 1-sided racemes. 
Calyx 5-cleft, the lobes spreading or erect in fruit. Co¬ 
rolla salver-form, the limb 5-lobed, the throat crested. 
Stamens 5, inserted on the corolla-tube. Ovary 4-divided. 
Nutlets erect, glabrous or pilose, attached by their bases 
to the receptacles. 
1. Mysostis virginica (L.) B. S. P. Spring or Early Scorpion- 
grass. Annual or biennial, bristly-hirsute. * Stem erect, 3'-15' high. 
Leaves oblong or linear-oblong, 3"-12" long. Corolla white, the limb 
iy 2 " broad. 
On dry hills. April-June. Common. 
III. LITHOSPERMUM (Tourn.) L. 
Annual or perennial, erect, branching, pubescent, hir¬ 
sute or hispid herbs. Leaves alternate, entire. Flowers 
small or large, white, yellow, or blue in leafy-bracted 
spikes or racemes. Calyx 5-parted or 5-cleft. Corolla 
funnel-form or salver-form, 5-lobed, naked, pubescent or 
crested in the throat, the lobes entire or erose-denticu- 
late. Stamens 5, inserted on- the throat of the corolla. 
Ovary 4-divided. Stigma capitate, or 2-lobed. Nutlets 
4, erect, white, smooth and shining, or brown and wrin¬ 
kled, attached by their bases. 
Annual plants, corolla white or whitish. 1. L. arvense. 
Perennial plants, corolla yellow. 
Corolla lobes entire; all flowers complete. 
Stems hirsute; corolla tube beardless at the base 
within. 2. L. canescens. 
Stems hispid; corolla tube bearded at the base 
within. 3. L. Gmelini. 
Corolla-lobes erose or laciniate; later flowers cleistog- 
amous. 4. L. linearolium. 
1. Lithospermum arvense L. Corn Gromwell. Annual or bi¬ 
ennial, hoary-strigose. Leaves narrowly lanceolate. Flowers incon¬ 
spicuous, whitish, in the upper axils. Corolla pubescent in the 
throat, but not crested, tube funnel-form. Nutlets ovoid, pitted and 
wrinkled. 
In waste places and fields. April-August. Oklahoma County. 
