434 EUPHORBIACE^. (SPDEGE FAJIILy.) 



peduncled in a dichotomous inflorescence, mostli/ with 5 obtuse glands : seeds with- 

 out caruncle. 



3. E. Ipecacu^nhse, L. Stems many from a very long perpendicular 

 root, erect or diffusely spreading (5'- 10' long), forking from near the base; 

 leaves varying from obovate or oblong to narrowly linear, almost sessile, gla- 

 brous; peduncles elongated (|-'-l' long) ; pod long-pedicelled, obtusely angled, 

 nearly smooth ; seed ovate, white, sparsely marked with impressed dots. — Sandy 

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



# * Perennials or mostly annuals, with serrulate or rarely entire scattered leaves, only 

 the floral leaves in the umhelliflirm inflorescence whorled or opposite and of differ- 

 ent shape: glands of the involucre mostly 4, transversely oval, obtuse. 

 1- Seeds smooth and even : pod warty or rough. 



14. E. Darlingtdnii, Gray. Tall perennial (2° -4° high) ; leaves entire, 

 minutely downy beneath ; those of the stem lanceolate-oblong from a narrow base ; 

 the floral ones oval, very obtuse ; the upper roundish-dilated with a truncate 

 base ; umbel 5 - 8-rayed, then simply forked ; pod minutely warty ; large globular 

 seed with a, small caruncle. (E. nemorMis, ZAir/., not of Kitaibel.) — Copses, 

 Penn. and southward along the mountains. July- Sept. 



15. E. PLATTPHi'LLA, L. Ercct annual (8' -18' high); upper stem-leaves 

 lanceolate-oblong, acute, cordate at base, minutely serrulate, mostly with scattered 

 hairs beneath ; floral ones triangular-ovate, subcordate ; umbel 5-rayed ; involucre 

 with ciliate lobes and large sessile glands ; styles longer than the ovary, united at 

 the base, slightly 2-cleft ; pod covered with depressed warts. — Along the Great 

 Lakes and the St. Lawrence to L. Champlain. June -Aug. (Adv. from Eu.) 



16. E. Obtusita, Pursh. Erect annuo/ (1° -2° high) ; leaves oblong-spatu- 

 late, minutely serrulate, smooth, all obtuse ; upper ones cordate at base ; floral ones 

 ovate, dilated, barely mucronate ; umbel once or twice divided into 3 rays, then 

 into 2 ; involucre with naked lobes and small stipitate glands ; styles distinct and 

 longer than the ovary, rect, 2-clefl to the middle ; pod beset with long warts. — 

 Damp woods, Virginia to Illinois. May- July. 



1- 1- Seeds rugose or reticulated : leaves serrulate : annuals. 



17. E. dictyosp6rina, Fischer & Meyer. Stem erect {8' -18' high); 

 leaves oblong- or obovatc-spatulate, smooth, all obtuse and obtusely serrate; upper 

 ones cordate at base; floral ones roundish-ovate or obscurely heart-shaped, 

 slightly mucronate ; umbek once or twice 3-forked, then 2-forked ; involucre 

 with nearly naked lobes and smalt almost sessile glands ; styles shorter than the 

 ovarj', spreading or recurved ; pod warty ; seeds delicately reticulated. (E. Arkan- 

 sana, Engelm. Sj- Gray.) — Prairies and roadsides, Kentucky (Short), and west 

 and southwestward. May - July. 



18. E. Heliosc6pia, L. Stems ascending (6'- 12' high), stout; leaves all 

 obovate and very rounded or retuse at the end, flnely serrate, smooth or a little 

 hairy, those of the stem wedge-shaped ; umbel divided into 5 rays, then into 3, 

 or at length simply forked; glands orbicular, stalked; pod smooth and even; seeds 

 with coarse honeycomb-like reticulations. — Waste places, especially eastward and 

 along the Great Lakes. July -Sept. (Nat from Eu.) 



