eae MISSOURI BOTANICAL GARDEN. 
Reported also from Alabama (Mohr, Prelim. List Plants Ala. 36. 1880); 
and from Johnson Co., Iowa (Fitzpatrick, Proc. Ia. Acad. Sci. 5: 162. 
1898). 
= = Seeds dull, brown, superficially reticulate with wall-like ridges. 
1. Cymosely branched; capsule short verrucose; low annuals or occa- 
sionally biennial. 
E. Arxansana Engelm. & Gray, Plantae Lindheimer. in 
Bost. Journ. Nat. Hist. 5:53. 1845; Gray, Man. 
388. 1857. [2d ed.]. #. Helioscopia Torr. Exp. 
Red Riv. La. Appx. G. Bot. 282. 1854. (?). 2. dicty- 
osperma Engelm. Mex. Bound. 2!: 191. 1859; Boiss. 
in DC. Prod. 15?: 135. 1862. (in part); Gray, Man. 
434. 1868. [5th ed.] (and of authors generally, not 
Fisch. & Meyer). Tithymalus arkansanus K). & Gar. 
Tricoc. 66. 1860. EH. obtusata Coulter, Manual 327. 
1885. (?). 
Annual, or biennial in the South; stem slender, 1 to 3 
mm. in diameter, 2 to 5 dm. high, usually more or less 
branched at the crown and with spreading branches below 
the umbel; rays 3, 2 to 3 cm. long, many times dichoto- 
mously and diffusely branched, the internodes longer than 
the leaves, the umbel in typical forms not so long as the main 
stem; stem leaves few, cuneate to spatulate, sessile or the 
lower petioled, usually almost acute, serrulate, 1 to 3 cm. 
long, 5 to 10 mm. wide; umbel leaves oblong or ovate; 
floral leaves broad triangular ovate to oblong, truncate or 
subcordate at the base, mucronate, serrulate, 1 cm. wide, 
1 to 2 cm. long, the upper ones much smaller; in- 
volucre 1 mm. or less high, a line of long hairs below the 
glands inside or almost smooth; lobes very short, rotund 
or emarginate, long ciliate to smooth; glands transversely 
elliptical, yellow, less than 1 mm. wide, over .5 mm. long ; 
fifth gland replaced by a very small lobe or a tuft of hairs; 
bracts 5, fimbriate and long ciliate; stamens 5 to 15, jointed 
at the base; capsule depressed globose, short verrucose 
except in the acute sulci, 2.5 to 3 mm. wide, 2 to 2.5 
18 
