■1--A EirHUKllIACEyE. (si'LU(iK KAMII.V.) 



15. E. telephioides, riKijmi. Smoutli ami somewhat He.sliy ; stem 

 tliii'k ; liniiicliis .!, >liuil, lurking'; li'iivcti lar^xc, (ilihiiig-olioviitf, obtuse, erect, 

 with inciiil>raiiaii'Oiis iiiur^ins ; of the hraiiclies siiuill, ovate, ela.spiiig ; in- 

 volucre j)ur|ile, slender-peilieelled, the lohes o\ate, entire, eiliate, iucurveil ; 

 >;laiitls ]ieltate, roundish, entire; capsule acute-angled, smooth. — Low 

 sandy pine barrens near the coast, West Florida. May -June. — I'laiit 

 ligiit ^recn, 2' -5' high. Stem leaves 2' -3' long, often longer than the 

 lirauches. Floral leaves 4" - 6" long. 



♦ » Slein erect, successively forkinij : leaves rommonl i) opposite : involucres in 



the finks, d<irk /iiir/ili' : ijluiuls 5, without (i/>peiiiJa(jes : perennials. 



16. E. Ipecacuanhse, L- stems several from a long perpendicular 

 root, slender, commonly forking from near tiie base ; leaves of tlie stem and 

 branches similar, opposite, or tlie lowest rarely alternate, entire, olituse, vary- 

 ing from linear to round-obovate, sliort-jietioled ; jjedundes slender, mostly 

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

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

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



17. E. nudicaulis, ('li:ipm. Smooth; stems .slender, forking above; 

 leaves minute (J" long), oval or obovate, the lowest alternate, tJKJse of the 

 branches op])osite ; involucres minute, on short peduncles; glands top-sliaj)ed. 

 — Low j)ine barrens, near St. Joseph's, West Florida. June. — Stems 1° 

 high. Capsule aiul seeds unknown. 



* » ♦ Branches and leaves alternate : involucres terminal, clustered or single : 



[/lands without appendages. 



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

 the base ; brandies elongated, leafy at the summit ; leaves ])etioled, oblong, 

 fiddle-shaped, tootiied or entire, the uppermost deep red at tlie ba.se ; involu- 

 cres clustered, short-stalked, with 5 incised lobes and a single gland ; ca])sule 

 smooth; seeds gh)bose, warty. — Var. r.u.VxMixiKOLiA (E. graminifolia, 

 Michr.) hiis the leaves all linear and entire. — South Florida, and around 

 dwellings, ap])arcntly introduced. May -Oct. — Stem l°-2° high. Leaves 

 2' long. 



19. E. triehotoma, IIBK. 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, jxtioled, ovate, lanceolate, or linear, coarsely toothed, the 

 lower ones alternate, the ui)permost ones opj)osite ; involucres nearly sessile, 

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

 ular, slightly tubercled. — Rich soil, Tennessee, and nortlnvard. July- 

 Sept. 



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



« Stems erect or ascending : seeds A-angled, transversely rugose : annuals. 



21. E. hypericifolia, L. Smooth throughout; stem (^°-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 



