Spring Flora of Oklahoma 
117 
Leaves alternate, mostly narrow, entire or shallowly 
toothed. Buds erect. Flowers yellow, diurnal, in termi¬ 
nal spikes or racemes. Sepals narrow. Ovary usually 
club-shaped, 4-angled. Stigma 4-cleft. Ovules numerous, 
on slender stalks, in many rows. Capsule club-shaped, 
4-winged or rarely sharply 4-angled. Seeds not angled, 
without a tubercle. 
1. Kneiffia linifolia (Nutt.) Spach. Thread-leaved Sundrops. 
Erect, simple or diffuse, glabrous below and finely pubescent above. 
Stem-leaves filiform-linear, entire, crowded. Basal leaves tufted, 
oblanceolate or spatulate, petioled. Flowers in loose, spike-like ra¬ 
cemes, yellow, diurnal, 3"-4" broad. Capsule obovoid, sessile or very 
nearly so, puberulent, sharply 4-sided but not winged. 
Dry soil. May-July. Lincoln County. 
III. HARTMANNIA Spach. 
Annual or perennial, caulescent herbs with branched 
stems. Leaves alternate, commorily pinnatifid, or lyrate. 
Buds drooping. Flowers perfect, white, red or purple, 
diurnal, in terminal spikes or racemes. Calyx-tube 
funnel-form. Petals 4, spreading. Stamens 8. Ovary 
elongated, 4-celled. Stigma 4-cleft, ovules numerous, on 
slender stalks, in many rows. Capsule club-shaped, 4- 
winged, sessile or stalked. Seeds numerous, not tuber- 
culate. 
1. Hartmannia speciosa (Nutt.) Small. Showy Primrose. 
Erect, perennial, puberulent or finely pubescent. Stem-leaves lance¬ 
olate or linear-lanceolate, sinuate or pinnatifid. Basal leaves slender- 
petioled, oval or oval-lanceolate, repand or pinnatifid at the base. 
Flowers white or pink. broad, loosely spicate. Capsule 
club-shaped, strongly 4-ribbed, 4-winged, pubescent, 6"-9" long. 
Prairies. April-June. Common. 
IV. LAVAUXIA Spach. 
Low, usually acaulescent herbs. Leaves mostly basal, 
pinnatifid, numerous. Flowers perfect, white, pink, or 
pale yellow. Calyx-tube slender, dilated at the throat. 
Petals 4. spreading. Stamens 8. Ovary short, 4-angled. 
Stigma 4-cleft. Ovules few. Capsules stout, their angles 
sometimes winged above. Seeds few. 
