312 DICOTYLEDONOUS PLANTS. 



HAB. Shady rocks. Pcnn. to Tenn. July, Aug. <*). The 

 upper haves spotted. 



2. E. hypericifolia Linn. : smooth, branching, erect-Fpreading : 

 branches divaricate ; leaves opposite, oval-oblong, slightly falcate, ser- 

 rate ; corymbs terminal. 



b. ? hirsuta Torr. : stem slender or hairy ; leaves oblong, smooth. 



serrulate. 



HAB. Fields and road sides. Can. to Flor. Aug., Sept. . 

 Stem erect, 1 2 feet high, very smooth. Leaves 3-nerved 

 and spotted. Flowers small. Var. b. is 812 inches high. 

 much branched and purple. . . 



3. E. maculata Linn. : erect-spreading or procumbent ; leaves oppo- 

 site, serrate, oblong, hairy ; flowers axillary, solitary ; inner segments 

 of the involucre coloured. 



HAB. Near cultivated grounds. N. Y. to Car. Aug. Oct . 

 Stem 612 inches long, generally purple. Leaves on short pe- 

 tioles, oblique at base, 3-nerved. Flowers crowded near the sum- 

 mit, but in reality solitary in each axil. Spotted Spurge. 



4. E. polygonifolia Linn. : procumbent, branching, very smooth, 

 succulent ; leaves oblong-ovate, linear-lanceolate, entire, obtuse, some- 

 times subcordate at base ; flowers solitary in the divisions of the stem; 

 stipules simple. 



HAB. Sands on sea shore. N. Y. to Car. July, to Sept. H. 

 Stem 8 inches long. Stipules subulate and simple. 



5. E. ipecacuanJia Linn. : procumbent or nearly erect, small, smooth; 

 leaves opposite, obovate and lanceolate ; peduncles axillary, 1 -flower- 

 ed, elongated. 



HAB. Sandy soil. N. J. to Car. June. L. Root very long 

 and tapering. Stem short. Leaves sessile, varying in form 

 from obovate to linear. Flowers solitary, on peduncles which 

 are about as long as the leaves. 



6. E. portulaccoides Linn. : erect ; leaves entire, oval, retuse j pe- 

 duncles axillary, 1-flowered, as long as the leaves. 



HAB. Sandy soils. Penru June 'Aug. Zf . Dr. Torrey thinks 

 it may be a variety of E. coroUata. 



7. E. dentata Mich. : hairy ; leaves opposite, oval, dentate; flowers 

 crowded at the summit "of the stem. 



HAB. Shady rocks. N. S. Ton. Tenn. Mich. July, Aug. . 

 Upper leaves spotted. 



** Floicers umbelled-involucratc. 



8. E. peplus Linn. : umbel 3-cleft, dichotomous; involucels (floral 

 leaves) ovate ; leaves entire, obovate, petioled. 



HAB. Cultivated grounds. Penn. to Vir. July, Aug. . 

 Floral leaves large. Floicers conspicuous. 



9 E. obtusata Pursh : umbel 3-cleft, twice dichotomous ; involucels 

 ovate, somewhat obtuse, subcordate ; leaves alternate, sessile, epatu- 

 late, serrulate, smooth ; capsules rauricate. 



