434 EUPHORBIACE^E. (SPURGE FAMILY.) 







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

 out caruncle. 



3. E. Ipecacuanhas, 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 ('-!' 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 umbeJliform 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-cleJl; pod covered with depressed warts. Along the Great 

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



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-deJl to the middle ; pod beset with long warts. 

 Damp woods, Virginia to Illinois. May - July. 



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



17. E. dictyosperma, 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, Engdm. fr Gray. ) Prairies and roadsides, Kentucky (Short), and west 

 and south westward. 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.) 



