CAUYOPIIYLLACE.E. (I'lXK FAMILY.; 87 



nxis, or cvaiipscent. Seeds cylindrical, straif;litish or curved. (A Greek name 

 for sonic ()l)S(iirc IktI).) 



1. E. Americana, Arnott. Dwarf (1' liij^li), crci'i)in;;, rootiii;,' in the 

 mud, tufted ; leaves oiiovatc ; flowers sessile ; sepals, petals, stamens, and stig- 

 mas 2, rarely 3 ; seeds 5 or 6 in eacli cell, rising- from the base. (re])lis Amer- 

 icana, Puik/i. Crypta minima, Nutt.) — Marj;in of ponds, &e., N. Hampshire, 

 to Illinois, Virjiinia, and southwcstward. Tod very thin and delicate; the seeds 

 large in proportion, straightish. 



OiiPKU 18. CARY^OPHYIiliACE^. (Pixk Family.) 



Herbs, iL'ith opposite entire leaves, symmetrical i - ii-merous Jlowers, with 

 or u'ithout petals ; the du^tinct stamens no more than twice the number of the 

 sepals, either h II peg !j nous or perigynous ; styles 2-5 {or rarely united into 

 one) ; seeds attached to the base or the central column of the 1-celled {rarely 

 3 - 5-celled) pod, with a slender embryo coiled or curccd around the outside 

 of mealy albumen, in Diiintiius nearly straight. — Bland herbs; the stems 

 usually swollen at the joints ; uppermost leaves rarely alternate. Leaves 

 often united at the base. Calyx persistent. Styles stigniatic along the 

 inside. Seeds ampliitropous or campylotropous. 



Tribe I. SILEXE/E. Sepals united intu a tube or cup. Petals and stamens borne on 

 the stipe or stalk of tin; ovary, the former with slender claws, to the base of which the cor- 

 responding filaments often adhere, inclu<Ied in the calyx-tube, mostly convolute in the bud. 

 Seeds numerous. — Stipulei none. Flowers often large and showy. 



• Calyx Willi scaly bractlets or small leaves at the base. Seeds flattened on the back, attached 

 by their face : endjryo nearly straight. 



1. Diaulhus. Calyx terete, mostly cylindrical. Styles 2. 



• • Calyx naked. Seeds globular or kiilney-sbaped : embryo curved or coiled. 



2. Sap oil aria. Calyx terete. Styles 2 



3. Vuccni'la. Calyx 5-angletl ami in fruit 5-wuiged. Styles 2. 

 4 Silfiie. Calyx 5-toothi-d. Styles :J. 



5. L> cliiiis. Calyx o toothed or 5-lobed. Styles 5, rarely 4. 

 Tribe II. ALSINEi^. S.-pals sei)arate to the base or marly so, imbricated in the hud. 

 Petals when present without claws, m.istly imhiicaled in the hud, and with the stamens in- 

 serted at the base of the sessile ovary, or into a little disk which often coheres with the base 

 of the calyx. Pod splitting into valves or teeth, several - many-seeded. Stamens opposite 

 the sepals, when not more numerous than they. — Low herbs. Stipules none. 



• Styles opposite the sepals, or, when fewer, opposite those which are exterior in the bud. 

 C. Aminria. Petals entire. Styles usually 3. Pod short, splitting into 3 or 6 valves. 



7. Sti-lliirin. Petals 2-cleft or none. Styles usually 3 Pod short, splitting to the base. 



8. Ilolosteiiiii. Petiils denticulate or notched at the end. Styles usually 3. Pod open- 



ing at the apex by tci-th. Seeds fi.xeil by their face. 



9. CcMiMl iiiiu. Petals notched at the end or 2-clift. Styles 5 or 4 (as many as the petals). 



Po«l usually elongated, opening at the ai)ex by 10 or 8 teeth. Seeds fixed edgewise. 



• * Styles alternate with the sepals : stamens as many as they, sometimes twice as many. 

 10. Sngiiia. Petals 4 or 5, undivided, or none. Styles 4 or 5. Pod 4- 5-valved. 



Tribe III. ILLECEBUEiE. Sepals separate or more or less united below. Petalt 

 without long claws, or minute, or often none, inserted under the sessile ovary or on the 

 calyx. Pod 1-celled and splitting into valves, or a one-seeded utricle. — I^eaves with dry. 



