EuPHOuBiA. CXXl. EUPilOKBlACE^. 48'> 



cillate, subsessile, oval and entire; fed. terraiual, solitary, 1-flowered. — 1|. In 

 rocky shades, Penn. Pursh. Jl. Aug. 



7. E. Lathyris. Mole-tree. Caper Spurge. 



St. erect, stout, smooth ; lis. lance-linear, rather acute, entire, glabrous, 

 sessile ; umbel mostly 4-rayed, rays dichotomous ; glands of the invol. lunate, 3- 

 horned, the horns dilated and obtuse. — (g) Cultivated grounds and gardens. 

 Stem 2 — 3l'high. Leaves 2 — 4' by 3 — 9", numerous and arranged in 4 rov/s on the 

 stem. Umbel ot'4 verticillate branches with a central subsessile head. Jl. — Sept. {y 



8. E. Herronii. Riddel). He rr on' s Euphorbia. 



Erect, pilose, with opposite branches ; lower Irs. rhombic-ovate, middle 

 ones lanceolate, upper lance-linear, denticulate, obtuse at apex, acute at base; 

 umbels small, lew flowered. — Q Ohio. Plant hairy in all its parts, L — 2f high. 

 Petiole ciliate, half as long as the leaves. Aug. Sept. 



9. E. ANGUsTiroLiA. Haworth 1 — St. much branclied at base, ascending and 

 ■with barren branches above; Ivs. crowded, linear, obtuse; umbel many-rayed, 

 proliferous; Jloral invol. 2-leaved, leaflets broad-cordate. — %. A heath-Hke plant 

 of the gardens, native of , If high. Leaves 1' by 1", very numerous, spi- 

 rally arranged, apparently verticillate. f 



10. E. MARGiNATA. Pursh. — Lvs. oblong-lanceolate, subcordate, sessile, acute, 

 mucronate, entire on the margin, glabrous ; umbel 3-rayed, once or twice dicho- 

 tomous; involucrale lvs. oblong, cordate, colored and membranaceous at the 

 margin; inner segments of the floral involucre roundish; c«/'.'!. hoary-pubes- 

 cent. — (j) Gardens. A handsome species, remarkable for the variegated leaves 

 of the involucre, f 



* * Heads a.r.illanj or fasciculate. Leaves opposite. 



11. E. HYPER1CIF0LIA. SpuTge. Eye-bright. 



SI. smooth, branching, nearly erect, branches divaricate-spreading; lvs. 

 opposite, oval-oblong, serrate, sub-falcate; corymbs terminal. — A slender and 

 branching plant, found in dry and rich soils. Stem 10 — 20' high, usually pur- 

 ple, very smooth, the branches often pubescent, U. S. and Can. Leaves tripli- 

 veined, marked with oblong dots and blotches, ciliate, 6 — 12" long, and i as 

 wide, oblique, on very short petioles. Corymbs of small white heads, terminal 

 and axillary. July, Aug. 



12. E. MACULATA. (E. depressa. £/Z. E. thymifolia. Z/w?;.) Spotted Spurge. 

 Procumbent; branches spreading; lvs. serrate, oblong, hairy ; ^5. axillary. 



— ® -A- prostrate plant, spreading flat u > n the ground, in sandy fields, Mass. ! 

 to Ind. ! and S. States. Stem 6 — 12' in length, much branched, hairy. Leaves 

 opposite, 3 — 6" long and i as wide, oblong, obtuse, serrulate, smooth above, 

 often spotted wi'h dark purple, the margin ciliate, pale and hairy beneath, on 

 short stalks. Heads of flowers small, crowded near the summit, involucre 

 minute, white. Jl. — Sept. 



13. E. poLYGONiFOLiA. Kiiot-grass Spurge. 



Procumbent; lvs. entire, lanceolate and oblong, obtuse at base; fls. in the 

 axils of the branches, solitary. — ® Sea shores, R. I. ! to Flor. A very smooth, 

 succulent, prostrate plant, with milky juice. Stems 6 — 10' long, dichotomous, 

 procumbent. Leaves oblong and linear-lanceolate, rarely cordate at base, 3 — 5" 

 by 1", petioles about 1". Stipules subulate and simple. Heads small, in the 

 forks of the purple stem. June, July. 



14. E. Ipecacuan"h.s;. Ipecac Spurge. 



Procumbent or suberect, small, smooth ; lvs. opposite, obovate and oblan- 

 ceolate ; pcd. elongated, axillary, 1-flowered. — % Sandy soil, Middle ! and S. 

 States. Root perennial, very long. Stem rather thick and succulent, 3 — 8' 

 long. Leaves U — 2' by 3 — 6", sessile, varying from obovate to linear. Heads 

 solitary. Peduncles as long as the leaves. June. 



15. E. dentata. Michx. Tooihed-leaf Splurge. 



Hairy; lvs. opposite, oval, dentate ; _/?s. crowded at the summit of the 

 stem. — (J) Shady rocks, Penn., Tarrey, to Tenn., Michaux. Upper leaves 

 spotted. — Probably a variety of E. hypericifolia. Jl. Aug. 



