EUPHORBIACE.*;. (si'UKGK FAMILY.) 423 



f- -i- Glands of the involucre 5, without append ayes. 

 -M- Annuals. 



7. E. COmmutata, Eugelm. Smooth ; stems erect or ascending, umbel- 

 lately or alternately branched; leaves thin, obovate, entire, the lower peti- 

 oled, those of the branches rouud-kiduey-shaped, sessile; involucres nearly 

 sessile, shorter than the floral leaves; glands crescent shaped or 2-horued; 

 capsule smooth, round-angled ; seeds ovoid, pitted. Low ground, Chatta- 

 hoochee, Florida. Stem 6'- 12' high. Leaves -'- 1' long. 



8. E. Obtusata, Pursh. Smooth; stem erect; branches 3-5; leaves 

 sessile, serrulate, obtuse ; those of the stern wedge-oblong, of the branches 

 ovate ; involucre nearly sessile ; glands oval ; capsule round-angled, warty . 

 seeds smooth. (E. Helioscopia, Ell.'}} Shady woods, South Carolina, and 

 northward. July- Sept. Stem 1 high. Leaves 1' long. 



9. E. tetrapora, Engelm. Stem erect, umbellately branched ; leaves 

 wedge-shaped, obtuse or emarginate, the upper ones roundish ; glands 2- 

 horned ; capsule smooth, obtuse-angled ; inner face of the seed only 4-pitted. 

 Georgia, and westward. 



10. E. dictyosperma, Fisch. & Meyer. Smooth; stem umbellately 

 branched, slender, the branches forking ; leaves spatulate-obovate, serrulate 

 near the apex, of the branches cordate ; glands round ; capsule warty ; seeds 

 reticulate. (E. Arkansana, Enyelm.) Alabama (Buckley), and westward. 

 Stem 8' -12' high. 



11. E. Lathyris, L. Annual; stem tall (2 -3 high), glabrous ; leaves 

 closely sessile, lanceolate, the floral ones oblong-ovate, cordate ; lobes of the 

 involucre longer than the 2-horued glands. Waste ground. Introduced. 



w- *-< Perennials ; leaves entire. 



12. E. Darlingtonii, Gray. Stem tall ; branches 5 - 8, forking ; leaves 

 slightly pubescent beneath ; those of the stem oblong, of the branches oval or 

 roundish, obtuse, truncate at the base; involucres nearly sessile; glands 

 obliquely oval ; capsule obscurely warty ; seeds smooth. Mountains of North 

 Carolina, and northward. July. Stem 2 -4 high. 



13. E. sphserosperma, Shutthv. Smooth; stem erect; branches 3 -4, 

 forking ; leaves linear or linear-lanceolate, mostly acute, reflexed ; of the 

 branches cordate-ovate, clasping, acute ; involucres short-pedicelled, green, 

 with the ovate lobes nearly entire, much shorter than the truncate crenate 

 stalked glands ; capsule acute-angled ; seed roundish, smooth. Dry pine bar- 

 rens, Middle Florida. June -August. Stem l-2high. Branches of the 

 more sterile plants successively forking and widely spreading, like the two 

 following. Leaves 1'- 2' long. 



14. E. inundata, Torr. Smooth ; stem erect, 3-branched or alternately 

 branched from near the base, few-flowered ; leaves erect, lanceolate, acute, 

 sessile; of the branches oblong-ovate, clasping; involucre long-pedicelled, 

 reddish, the pubescent lobes 3-toothed ; glands orbicular, peltate, entire ; cap- 

 sules acute-angled, smooth. Pine barren swamps, Florida. April - June. 

 Stems 6''- 12' high, from a thick woody root. Leaves 2' -3' long. 



