426 EUPHORBIACEJE. (SPURGE FAMILY.) 



29. E. ammannioides, HBK. Smooth throughout; stems long (2- 

 3), filiform, prostrate, alternately branched ; leaves obloug (2" -3" loug), en- 

 tire; rounded and mucronate at the apex, short-petioled ; stipules 2-parted ; 

 flowers single, terminal, and in the forks of the branches ; glands margined 

 with white ; capsule obtusely triangular; seeds ovate, obscurely triangular, 

 smooth and even. Roberta's Key in Caximbas Bay, South Florida. 



30. E. COrdifolia, Kll. Smooth ; leaves petioled, oval or roundish, en- 

 tire, obtuse, cordate or truncate and oblique at the base ; stipules slender, 

 deeply parted into long, capillary segments ; appendages of the glands con- 

 spicuous, oblong or roundish, white ; capsule smooth, acute-angled ; seed 

 4 angled, smooth and even. Sandy pine barrens, South Carolina, and west- 

 ward. July - Sept. Stems 6' - 18' loug. Leaves 4" - 6" long, pale green. 



31. E. polygonifolia, L. Smooth and somewhat fleshy ; leaves oblong 

 or linear-oblong, entire, oblique, obtuse or slightly cordate at the base, peti- 

 oled ; stipules by pairs, 2 - 3-parted ; glands of the involucre slightly margined 

 by the narrow appendages, rather shorter than the subulate obtuse lobes ; 

 capsule smooth, acute-angled ; seed large, obovate, not angled, smooth and 

 even. Drifting sands along the coast. July -Oct. Stems 4'- 12' long. 

 Leaves \' long. Involucres densely bearded within. Seed whitish. 



- -t -i- Annual ; pubescent. 



32. E. mactllata, L. Pubescent ; leaves oblong, serrate, oblique at the 

 base, petioled, often blotched with purple ; stipules 2-parted ; capsule acute- 

 angled, hairy ; appendages of the glands transversely oblong, white ; seed 4- 

 angled, smooth, faintly wrinkled or pitted on the concave sides. Cultivated 

 ground and waste places, very common. June -Oct. Stems 6' -12' long. 

 Leaves 3" -4" long. 



33. E. humistrata, Kngelm. Prostrate, pubescent ; leaves elliptical or 

 obovate, oblique at the base, serrulate near the apex (4" -9" long) ; stipules 

 fimbriate ; flowers in dense lateral clusters ; involucre cleft on the back ; ap- 

 pendages of the gland red or white, truncate or crenate ; capsule acutely 

 3-angled; seeds ovate, obtusely angled, minutely roughened. Rich soil, 

 Tennessee, and westward. 



34. E. prostrata, Ait. Prostrate, more or less pubescent (4'- 6' long) ; 

 leaves oval, slightly serrulate, smooth above (2" -3" long) ; flowers in lateral 

 'lusters ; involucre top-shaped ; appendages narrow ; capsule long-ciliate on 

 the angles ; seeds 4-angled, strongly rugose. Waste places, Florida, and 

 westward. 



35 E. adenoptera, Bertolini. Prostrate ; stems shortly villous ; leaves ' 

 obliquely oblong, denticulate ; stipules subulate, ciliate ; involucre top-shaped, 

 hirsute, deeply cleft without, the ciliate lobes lanceolate; appendages rosy; 

 capsule hirsute, acute-angled ; seeds oblong, 4-angled, transversely furrowed. 

 South Florida ( Curtiss). 



2. HIPPOMANE, L. 



Flowers monoecious, apetalous, in thick cylindrical spikes. Sterile flowers 

 clustered in the axil of a broad entire bract. Calyx top-shaped, 2-lobed. Sta- 



