4l'(> Eri'iioKiuACE.E. (spurge famii.v.) 



29. E. ammannioides, IIHIv. Smooth tlirouf;lioiit ; ^tems long (2°- 

 3-). filiform, ])r..str:iir, iiltcniiUelv braiula-d ; leavos oldoiijj (2" -3" long), en- 

 tiro ; roinnli'(i and innrronate at the apex, Hhort-jicticdcd ; stipules 2-parted ; 

 flowirs single, tirininal, and in tiii" forks of tiie branchi-s ; glandw margined 

 witii while ; lapsnle obtusely triangular ; si-eils ovate, olisrurely triangular, 

 sniootli and even. — Kolu-rts's Key in Caxiuilms IJay, South Florida. 



30. E. COrdifolia, Kll- Smooth ; li-aves jietioled, oval or roundish, en- 

 tire, obtuse, tordate or truutate and oldicjue at tiie base ; stipules slender, 

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

 spicuous, oblong or roundish, white ; caj)8ule smooth, acute-angled ; seed 

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

 ward. July - Sept. — Stems 6' - 18' long. Leaves 4" - 6" long, })ale green. 



■'tl. E. polygonifolia, L. Smooth and somewhat fleshy ; leaves oblong 

 or linear-olilong, entire, ol)li4ue, obtu.<e or slightly cordate at the base, peti- 

 oled ; stipules l)y pairs, 2 -3-parteil ; glands of tlie involucre slightly margined 

 by the narrow a])j)endages, 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 i' long. Involucres densely bearded within. Seed whitish. 



■*-■*-■*- Annual; pubescent. 



32. E. znaculata, L. Pubescent ; leaves obloug, serrate, oblique at the 

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

 angled, hairy ; appeudages 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, Engelm. Prostrate, pubescent ; leaves elliptical or 

 obovate, ol)lii|ue at tlie iiase, serrulate near the ajiex (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. — Eich soil, 

 Tenne.s.see, and westward. 



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

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

 clusters ; involucre top-shaped ; appendages narrow ; capsule long-ciliate on 

 the angles ; seeds 4-angled, strongly rugo.se. — Waste places, Florida, and 

 westward. 



3.1. E. adenoptera, BertolinJ. Prostrate; stems shortly villous ; leaves 

 otdifjuely 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- 



