OKDER 113. EUPHORBIACE^. 295 



IO E. tetrapora Eng. Leaves linear-spatulate. tho floral larger, titm-vci'sel'y ovate; 



nmbel 3-rayed ; seeds 4-pitted on the inner face, (i) Ga. to La. 10'. 

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



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



12 E. heteropbylla 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. deiitata MX. Stem 8' 2f, hairy, with opposite branches; leaves opposite, 

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

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



14 E. Ipecac uaiiUffi L. Root long, stems clustered, slender, diffusely forked ; Ivc 

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

 compressed, pitted. y Sands, coastward. 8 12'. (E. gracilis Ell.) 



15 E. tiudica all** Chapm. Slender, forking above; leaves minute (|"), obovate, 

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



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

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



17 E. dictyosperma F. &M. Slender; nmb. once or twice 3-forked, then 2-forked ; 

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

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



1 8 E. I>a rHnntoiiil Gray. Tall (2 3f ) ; umbel 5-S-rayed, rays forked or trifid ; 

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



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

 clate. serrulate, the floral triangular-ovate. (T) Lake shores, N. 



20 E. obtiisuta Ph. Erect, 1 2f; umbel 3-rayed, rays trifid or forked; leaves al) 

 n^sile, serrulate, obtuse, the floral roundish-cordate, the lower oblanceolate ; fruit 

 very warty. Woods, Va., and W. 



'/I E. liinudata Torr. Smooth, erect; umbel 3-rayed, and forked; leaves intire, 

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

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



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

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



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

 stem, small on the umbel. Otherwise like No. 22. y West Fla. May, June. 



24 E. hypericlfolla. L. St. 1 2f ; Ivs. H 12", oval-oblong, serrate all around ; sds. 

 oval, obtusely 4-angIed, wrinkled and tubercled, black. (I) Fields: common. 



2-5 E. glyptosperrna Eng. St. 5 ID', 'Ivs. 4 6", linear-oblong, serrulate toward the 

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



26 E. maculata L. Hairy; leaves oblong, serrulate, often with a brown spot ; stip. 

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



2,7 E. liumlstrata Eng. Hairy; Ivs. elliptic-obovate, serrulate at apex, rarely spot- 

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



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

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



29 E. polygonlfdlla L. Lvs. oblong-linear; glands of invol. not appendaged; seeds 

 large (1" long), ovoid, smooth and whitish. Sandy sea and lake coasts. 



30 E. Oeyerl Eng. Leaves oblong-obovate ; glands with narrow appendages ; seed* 

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



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

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



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

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



33 E. SPLENDBNS. Shrubby and fleshy, thorny; Ivs. ovate, acute both ways ; ped. az 

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



