Spring Flora of Oklahoma 
145 
Ovary 4 divided or deeply 4-lobed, the style arising 
from the center. 
Corolla salver-form or funnel-form, its lobes rounded, 
spreading. 
Racemes not bracted; corolla-tube short. 
II. Myosotis. 
Racemes brajcted; corolla-tube cylindric, usually 
slender. III. Lithospermum. 
Corolla tubular, its lobes erect, acute. 
IV. Onosmodium. 
I. HELIOTROPIUM (Tourn.) L. 
Herbs or shrubs, with alternate, mostly entire, and 
petioled leaves. Flowers small, blue, or white, in scorpioid 
spikes, or scattered. Calyx 5-parted. Corolla salver- 
form or funnel-form, the throat open. Stigma conic or 
annular. Fruit 2-4 lobed, separating into 4 1-seeded nut¬ 
lets, or into two 2-seeded carpels. Ovary entire, or 2-4- 
grooved. 
Flowers in scorpioid spikes. I. H. curassavicum. 
Flowers solitary, terminating short branches. 
II. H. tenellum. 
1. Heliotropium curassavicum L. Sea-side Heliotrope. Annual, 
glabrous, diffuse, the branches 6'-18' long. Leaves linear, or linear- 
oblong, entire. l'-2' long. Scorpioid spikes densely-flowered, mostly 
in pairs. Flowers about 2" broad. Corolla white with yellow eye 
or changing to blue. 
Saline soil. May-September. Along Cimarron River. 
2. Heliotropium tiemellum (Nutt.) Torr. Slender Heliotrope. 
Annual, strigose-canescent. Stem erect, slender, leafless below, 6'-18' 
tall. Leaves linear, entire, 6"-18" long. Flowers white, about 2t£" 
long. Fruit depressed, 4-lobed, separating into 4 1-seeded nutlets. 
In dry soil. April-August. McClain County. 
II. MYOSOTIS (Dill.) L. 
Low, annual, biennial, or perennial, pubescent, branch- 
