434 euphorbiace^e. (spurge family.) 



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

 out caruncle. 

 , 3. E. Ipecacilcinhse, L. Stems many from a very long perpendicular 



,- W •»«& 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 (j'-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 umbelliform inflorescence whorled or opposite and of differ- 

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

 •*- Seeds smooth and even : pod warty or rough. 



14. E. Darlingtbnii, 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. nemoralis, Darl., not of Kitaibel.) — Copses, 

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



15. E. platyphylla, L. Erect 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-clefl; pod covered with depressed warts. — Along the Great 

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



16. E. obtusata, Pursh. Erect annual (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-cleJl to the middle; pod beset with long warts. — 

 Damp woods, Virginia to Illinois. May - July. 



i- *- Seeds rugose or reticulated : leaves serrulate : annuals. 



17. E. dictyosp6rma, Fischer & Meyer. Stem erect (8'- 18' high); 

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

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

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

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

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

 sana, Engelm. §■ Gray.) — Prairies and roadsides, Kentucky (Short), and west 

 and southvvestward. May -July. 



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

 obovate and very rounded or retuse at the end, finely 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.) 



