EUPHOKBIACE^. (SPUKGE FAMILY.) 387 



mostly with a browH-puipIe spot in the centre ; peduncles eqttatting the petioles, 

 crowded in lateral dusters; glands of the inrolucre minute, with a petal-like 

 somewhat crenate margin ; pod acutely angled, pubernlent ; seeds ovate, ash-colored 

 (|" long), sharply 4-angled, and with about 4 grooves across gach of the con- 

 cave sides. (E. thymifolia, PwrsA. E. depressa, Tbrr.) — Gravelly open places, 

 everywhere. 



6. E. liypericifolia, L. (Larger Spotted Spurge.) Ascending or 

 erect (1° -2° high) ; leaves oblique at the obtuse or slightly cordate base, ovate- 

 oblong or oblong-linear, serrate {^-1 J' long), often with a red spot or red 

 margins ; peduncles longer Hum the petioles, collected in loose teajy cymes at the sum- 

 mit of the branches ; appendages of the involucre small, round, and entire ; pod 

 glabrous, obtusely angled; seeds obtusely angled, wrinkled and tubercled (^" long 

 or nearly), blackish. — Rich soil in open places ; very common. 



§ 2. Leaves destitute of stipules, all opposite: inijolucres solitary and pedancled, in the 

 firks of the stem : root perennial. (Oppositif61i£E.) 



7. £. IpccacuAnliae, L. (Wild Ipecac.) Stems many from a very 

 long perpendicular root, erect or diffusely spreading (5' - 10' long), forking from 

 near the base ; leaves vaiying from obovate or oblong to narrowly linear, entire, 

 almost sessile, glabrous ; peduncles elongated (\'-V long) ; glands of the invo- 

 lucre 5, equal, not appendaged; pod long-pedicelled, obtusely angled, nearly 

 smooth; seeds ovate, flattened, white, marked with impressed dots. — Sandy 

 soil, near the coast, New York to Virginia, and southward. May - July. 



^ 3. Leaves destitute of stipules, attemate or opposite : involucres all crowded in a 

 terminal cluster, bearing a few cup-shaped glands : root annual. (Cyathophorae.) 



8. £• dentata, Michx. Erect or ascending, hairy (1° high) ; leaves al- 

 ternate or opposite, ovate, lanceolate or linear, petioled, cora'seZy (oo(Aa? (l'-2' 

 long) ; involucres almost sessile, with 5 ovate laciniate lobes and a stalked gland, 

 and sometimes with 2 or 3 ; seeds globular, tubercled. — Rich soil, Ohio to 

 Illinois and southward. July, Aug. 



9. £. cyatll6pllora, Jacq. Ascending or erect (l°-3°high), gla- 

 brous ; leaves alternate, petioled, ovate-Jiddle-shaped and sinuate-toothed, or lanceo- 

 late, or linear and entire : involucres about the lengtli of the peduncle, with 5 ovate 

 incised lobes and a single sessile gland ; seeds globular, tubercled. — W. Illi- 

 nois and southward. July. — Upper leaves mostly with red margins or base. 



5 4. Leaves destitute of stipules, alternate or scattered up to where the flowering begins, 

 the floral ones opposite or whorled, aM commonly sessile: stem erect: flowering 

 branches umbdlately forked : involucres in the forks and terminal. (XJmbellatas.) 

 # Glands of the involucre 5, entire, with {white) petal-like appendages : perennial. 



10. £• coroUata, L. (Flowering Spurge.) Glabrous or sometimes 

 sparingly hairy (2° -3° high) ; leaves ovate, lanceolate, or linear, entire, obtuse; 

 umbel 5- (3 - 7-) forked, and the forks again 2-3- (rarely 5-) forked ; involucres 

 long-pcduncled ; pods slender-pedicelled, smooth ; seeds globular, slightly tuber- 

 cled. Rich or sandy soil, W. New York and New Jersey to Wisconsin and 



southward. Juno - Aug. — Conspicuous for the showy false lobes of the invo- 

 lucre, which appear like 5 white petals, the true lobes minute and incurved. 



