94 
Spring Flora of Oklahoma 
2"-6" long, nearly entire or serrulate to below the middle. Involucres 
usually solitary in the axils of the leaves. Capsule 1" broad. 
In dry soil. M/ay-September. 
3. Ohamaesyce Preslii (Guss.) Arthur. Upright Spotted 
Spurge. Annual, glabrous or sparingly pubescent. Stem 7'-24' tall. 
Leaves opposite, oblong, or linear-oblong, 3-nerved, unequally serrate, 
often with a red blotch and red margins. Capsule glabrous, 1" in 
diameter. 
Fields and thickets. May-October. 
VII. DICHROPHYLLUM Kl, & Garcke. 
Annual, caulescent herbs, with the erect stems often 
topped with a several-rayed umbel. Leaves scattered below 
the umbel, above it opposite or whirled, often petal-like 
and showy, entire. Involucres campanulate, in rather dense 
cymes, pubescent without and within. Lobes fringed. 
Glands 5, with white or pink petal-like appendages. Cap¬ 
sule exserted, large pubescent, the lobes rounded. 
1. Dichrophyllum marginatum (Pursh.) Kl. & Garcke. Snow- 
on-the-mountain. Annual, glabrous or pubescent. Stem erect, 
10'-36' tall. Leaves excepting the whorl subtending the umbel, scat¬ 
tered, ovate to obovate, 10"-3%' long, entire. Rays of the umbel 
forked. Bracts large, white-margined. Capsule depressed globose, 
3" in diameter, pubescent. 
In dry soil. May-October. Common. 
VIII. TITHYMALOPSIS Kl. & Garcke. 
Perennial herbs, with tough rootstocks and glabrous or 
pubescent foliage. Stems solitary or tufted, topped by 
several-rayed umbels. Leaves alternate or scattered below 
the umbels, above it opposite or whorled, entire, more or 
less leathery. Glands sessile or stalked, with white, pink 
or rose petal-like appfendages. Capsule exserted, lobes 
rounded. Seeds narrowed upward, punctate. 
1. Tithymalopisis corollata (L.) Kl. & Garcke. Flowering 
Spurge. Perennial, glaborous or pubescent. Stem erect, 10'-36' 
tall. Leaves linear, oblong or oblong-spatulate, 10"-20" long, en¬ 
tire. Involucres mostly terminal. Capsule erect, l"-2" in diame¬ 
ter. 
In dry soil. April-October. 
