o 



424 EUPHORBIACE.E. (SPUKGE FAMILY.) 



'.5. E. telephioid.es, Chapin. Smooth ami somewhat fleshy; stem 

 thick ; branches 3, short, forking ; leaves large, oblong-obovate, obtuse, erect, 

 with membranaceous margins; of the branches small, ovate, clasping; in- 

 volucre purple, slender-pedicelled, the lobes ovate, entire, ciliate, incurved ; 

 glands peltate, roundish, entire ; capsule acute-angled, smooth. Low 

 s:in ly pine barrens near the coast, West Florida. May- June. Plant 

 light green, 2' -5' high. Stem leaves 2' -3' long, often longer than the 

 branches. Floral leaves 4" -6" long. 



* * Stem erect, successively forking : leaves commonly opposite: involucres in 



the forks, dark purple : ylands 5, without appendages: perennials. 



16. E. Ipecacuanhas, L. Stems several from a long perpendicular 

 root, slender, cuinmonlv forking from near the base; leaves of the stem and 

 brandies similar, opposite, or the lowest rarely alternate, entire, obtuse, vary- 

 ing from linear to round-obovate, sliort-petioled ; peduncles slender, mostly 

 longer than the leaves; involucre small; capsule slender-stalked, nodding, 

 round-angled; seeds minutely pitted. Dry sandy soil. May- June. Stem 

 2' 12' high. Leaves '- 1' long. 



17. E. nudicauliS, Chapm. Smooth; stems slender, forking above; 

 leaves minute (V long), oval or obovate, the lowest alternate, those of the 

 branches opposite ; involucres minute, on short peduncles; glands top-shaped. 

 Low pine barrens, near St. Joseph's, West Florida. June. Steins 1 

 high. Capsule and seeds unknown. 



* * * Branches and leaves alternate: involucres terminal, clustered or singlet 



glands without appendages. 



18. E. heterophylla, L. Annual, smooth ; stem erect, branching from 

 the base ; branches elongated, leafy at the summit; leaves petioled, oblong, 

 fiddle-shaped, toothed or entire, the uppermost deep red at the base ; involu- 

 cres clustered, short-stalked, with 5 iucised lobes and a single gland ; capsule 

 smooth; seeds globose, warty. Var. GRAMINIFOLIA (E. graminifolia, 

 M/c/i.r.) has the leaves all linear and entire. South Florida, and around 

 dwellings, apparently introduced. May -Oct. Stem l-2 high. Leaves 

 2' long. 



19. E. trichotoma, HBK. Annual; stem irregularly much branched, 

 very leafy ; leaves small, imbricated, oblong-obovate, acute, obscurely crenate, 

 sessile ; involucre solitary, top shaped, sessile ; glands 5, peltate ; capsule 

 smooth, short-stalked. South Florida. Stem low. Leaves 3"- 4" long. 



20. E. dentata, Michx. Annual, erect (1 high), irregularly branching; 

 leaves distant, petioled, ovate, lanceolate, or linear, coarsely toothed, the 

 lower ones alternate, the uppermost ones opposite ; involucres nearly sessile, 

 with five toothed lobes, and mostly a single stalked gland ; seeds nearly glob- 

 ular, slightly tiibercled. Rich soil, Tennessee, and northward. July- 

 Sept. 



2. Leaves stipulate, all opposite : glands of the involucre 4. 



* Stems erect nr ascending : seeds 4-angled, trnnsivrseli/ rnr/nse : rtnniia//;. 



21. E. hypericifolia, L. Smooth throughout; stem (i-2 high) 

 erect ; branches alternate, 2 ranked ; leaves ( - V long) petioled, lanceolate- 

 oblong, oblique and obtuse or acute at the base, equally serrulate on both 



