434 EUPHORBIACE.E. (SPURGK FAMILY.) 



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

 out caruncle. 



3. E. Ipecacuanhse, 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 (^'-1' 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 ichorled 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. Darlingtbllii, 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, 

 Venn, 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 

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

 with cl/iate 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. 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-cleft to the middle ; pod beset with long warts. — 

 Damp woods, Virginia to Illinois. May- July. 



•*- +- Seeds rugose or reticulated : leaves serrulate: annuals. 



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

 haves 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. Sf Gray.) — Prairies and roadsides, Kentucky (Short), and west 

 and southvvestward. May - July. 



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

 vbovate 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.) 



