EUPHORBIACEAE. 



[VOL. II. 



22. Euphorbia Darlingtonii A. Gray. 

 Darlington's Spurge. (Fig. 2328.) 



Euphorbia Darlingtonii A.. Gray, Man. 404. 1848. 



Perennial, dark green, often minutely pubes- 

 cent. Stem rather stout, erect, iK-5 tall, 

 fleshy, topped by a 5-8-rayed umbel, branched 

 above, the branches simple or forked; the 

 leaves oblong or oblanceolate, ift'-tf long, 

 mostly obtuse at the apex, sessile, often undu- 

 late, more or less pubescent beneath, those of 

 the stem scattered, those subtending the umbels 

 verticillate; bracts opposite, ovate or nearly reni- 

 form; involucres campanulate, nearly 2" long, 

 bearing 5 reniform crenulate unappendaged 

 glands; capsule depressed-globose, minutely 

 warty; seeds ovoid-globose. 



New York, Pennsylvania and New Jersey to 

 North Carolina. May-Sept. 



23. Euphorbia obtusata Pursh. 

 , Blunt-leaved Spurge. (Fig. 2329.) 



Euphorbia obtusata Pursh, Fl. Am. Sept. 606. 



1814. 



Annual, yellowish green, glabrous. Stem 

 slender, erect or assurgent, i-2 high, strict, 

 branched above, topped by a 3-rayed umbel; 

 branches simple or forked; leaves, except the 

 whorl subtending the umbel, scattered, 

 spatulate -oblong, obtuse, serrulate to below 

 the middle, sessile, the base slightly auricled; 

 involucres short-peduncled, W long, bear- 

 ing 4 stalked unappendaged glands; capsule 

 subglobose, nearly 2" in diameter, with 

 elongated warts, the lobes rounded; seeds 

 lenticular, oblong, or orbicular-oblong, dark 

 brown, faintly reticulated. 



in dry soil, Virginia to Iowa, South Carolina 

 and Texas. March -July. 



24. Euphorbia platyphylla I,. Broad- 

 leaved Spurge. (Fig. 2330.) 



Euphorbia platyphylla L. Sp. PI. 460. 1753. 



Annual, glabrous or nearly so. Stems mostly 

 erect, slender, 4 / -2o / high, terete, often reddish, 

 topped by a usually 5 -rayed umbel; the branches 

 forked or umbellately branched; leaves, except 

 the whorl at base of the umbel, scattered, oblong 

 or spatulate-oblong, io // -i5 // long, acute, serrulate, 

 sessile, the base slightly auricled; bracts triangu- 

 lar-ovate or reniform, mucronate, often entire; in- 

 volucres very thin, campanulate, nearly i" long, 

 sessile, bearing 4 sessile glands without append- 

 ages; capsule subglobose, about 2" in diameter, 

 with depressed warts, the lobes rounded; seeds 

 lenticular, oblong or nearly orbicular, smooth, 

 brown. 



Along the shores of the St. Lawrence River and the 

 Great Lakes. Naturalized from Europe. June-Sept. 



