ORDER 113. EUPHORBIACE^E. 295 



IO E. tetrapora Eng. Leaves linear-spatulate, the floral larger, transversely ovate ; 



umbel 3-rayed ; seeds ^-pitted on the inner face, Ga. to La. 10'. 

 HE. Lathyrls L. Caper S. Stoat, 2 or 3f high; leaves sessile, lance-linear, all 



opposite ; umbel 4-rayed, then forked ; glands horned. Gardens, and . 



12 E. lieterophylla MX. Stem with scattered branches, 1 3f ; leaves ovate, or 

 sinuate-lobed, or panduriform, all petiolate and scattered, the upper stained red on 

 the margins ; gland 1, sessile. Iowa to Ga. June, July. 



13 E. dentata MX. Stem 8' 2f, hairy, with opposite branches; leaves opposite, 

 ovate, dentate, petiolate ; heads snbsessile ; seed tubercled, round and black ; gland 

 1 or more, stalked. Shades, Penn. to Iowa and La. 



14 E. Ipecacuanhas L. Hoot long, stems clustered, slender, diffusely forked ; Ivs. 

 opposite, all oblong to linear, obtuse, sessile ; heads on filiform pedicels ; seed white, 

 compressed, pitted, if. Sands, coastward. 812'. (E. gracilis Ell.) 



1 5 E. mi d ica tills Chapm. Slender, forking above ; leaves minute (1"), obovate, 

 the upper opposite ; heads minute, glands margined, greenish, n Fla. 



16 E. Helioscopia L. Stout; umbel 5-rayed, rays trifid, and forked; Ivs. cuneate 

 to obovate, whorled above ; glands round, stalked. Waysides, N. 



1 7 E. dictyosperma F. & M. Slender ; umb. once or twice 3-forked, then 2-forked ; 

 floral leaves roundish-ovate, subcordate, cauline oblong-spatulate to obovate ; fruit 

 warty, seeds reticulated. Ky., and S-W. (E. Arkansana C-B.) 



1 8 E. Darlingtonii Gray. Tall (2 3f ) ; umbel 5-8-rayed, rays forked or trifld ; 

 leaves entire, oblanceolate, the floral oval, it Woods, Penn., and S. 



19 E. platyphy'lla L. Erect, 816' ; umbel 5-rayed; leaves lance-oblong, subcor- 

 date, serrulate, the floral triangular-ovate. Lake shores, N. 



20 E. obtusata Ph. Erect, 1 2f; umbel 3-rayed, rays trifid or forked; leaves all 

 sessile, serrulate, obtuse, the floral roundish-cordate, the lower oblanceolate ; fruit 

 very warty. Woods, Va., and W. 



21 E. in 11 n data Torr. Smooth, erect; umbel 3-rayed, and forked; leaves entire, 

 sessile, lanceolate to oblong-ovate ; glands round, entire ; seeds globous. 2f Wet 

 barrens, Fla. 6 12'. Heads on slender peduncles. Root woody. 



22 E. sphaerosperma Shutt. (E. Floridana Chapm.) Lvs. lance-linear to cordate- 

 ovate ; heads green, glands creuate. Otherwise like No. 21. H. Dry. Fla. 1 2f. 



2 J E. telepliioidcs Chapm. Plant some fleshy, 25' high ; Ivs. ovate, large on the 

 stem, small on the nmbel. Otherwise like No. 22. u West Fla. May, June. 



24 E. liypericifolia L. St. 1 2f ; Ivs. 1512", oval-oblong, serrate all around ; sds. 

 oval, obtusely 4-angled, wrinkled and tubercled, black. Fields : common. 



25 E. glyptosperma Eng. St. 5 W ; Ivs. 4 (i", linear-oblong, serrulate toward the 

 apex : stip. fringed ; sds. ovoid, obtuse-angled, wrinkled, amber-color. Wis., and S-W. 



26 E. niaculata L. Ilairy ; leaves oblong, serrulate, often with a brown spot ; stip. 

 minute ; seeds sharply angled, obscurely wrinkled, reddish. Sandy fields : common. 



27 E. hnmistrata Eng. Hairy; Ivs. elliptic-obovate, serrulate at apex, rarely spot- 

 ted ; stipules fringed ; seeds obtuse-angled, oval, roughened, brownish. Banks, W. 



28 E. serpyllifolia Pers. Smooth ; Ivs. obovate-oblong, serrulate at apex, seldom 

 spotted ; stipules fringed ; seeds acutely 4-angled, cross-wrinkled. Banks, W. 



29 E. polygonifolia L. Lvs. oblong-linear; glands of invol. not appendaged ; seeda 

 large (\" long), ovoid, smooth and whitish. Sandy sea and lake coasts. 



30 E. Geyerl Eng. Leaves oblong-obovate ; glands with narrow appendages ; seeds 

 small (I"), ovoid, acute, obtusely 3-angled, ash-colored. Sandy soils, N-W. 



31 E. serpens H. B. K. Lvs. round-ovate, very email (12") ; stip. triangular ; glanda 

 scarcely appendaged; pod acutoly keeled, seeds ovoid-3-angled. 111. to La. 



32 E. cordifolia Ell. Lvs. 4 6", cordate-oval ; glands conspicuously white-appen- 

 daged ; pods and seeds as in No. 31. Fields, South. Spreading If. 



33 E. SPLENDENS. Shrubby and fleshy, thorny; Ivs. ovate, acute both ways ; ped. ax- 

 illarj ; floral leaves in pairs, broader than long, scarlet. Madagascar. 



