EUPHOKBIACE^, (SPURGE FAMILY.) 423 



•4— +- Glands of the involucre 5, witliout appendages. 

 ■*-*■ Annuals. 



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

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

 oled, those of the branches round-kidney-shaped, sessile; involucres nearly- 

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

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

 hoochee, Florida. — Stem 6'- 12' high. Leaves 4'- 1' long. 



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

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

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

 seeds smooth. (E. Helioscopia, £//.? ) — 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. dietyosperma, 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, Engelm.) — 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-horned glands. — Waste ground. Introduced. 



++ ++ 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, Shuttlw. 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°-2°high. Branches of the 

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

 following. Leaves r - 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. 



