612 Obder 105.— CHENOPODIACE^E. 



* Tb. Salicorn. Inflor. anomalous. Fls. imbedded. St. jointed, (leafless).... Salicorwia. 9 



* Tribe Spinaciej3. Inflor. normal. Fls. of two sorts. St. continuous. Lvs. broad, (a) 



a Fruit enclosed in a hardened calyx without bracts. Cultivated Spinacia. 8 



a Fruit naked (no calyx) between two united bracts. Leaves oval Obione. 7 



a Fruit naked (no calyx) between two subdistinct bracts. Lvs. triangular. Atriplex. 6 



* Tribe Ciienopodie^e. Inflor. normal Fls. perfect and alike. St. contin. Lvs. broad, (e) 



C Seed vertical. Pericarp thin, smooth, mostly in a fleshy calyx Blitum. 5 



C Seed vertical. Pericarp thin, glandular, in a wrinkled calyx ...Eoucieva. 4 



C Seed horizontal. Pericarp thin, in a plain, unbordered calyx Chenopodium. 3 



C Seed horizontal. Pericarp thin, in a calyx bordered all around Cycloloma. 2 



C Seed horizontal. Pericarp thick and hard, calyx ribbed Beta. J 



1. BETA, Touni. Beet. (Celtic Lett, red, the usual color of the 

 Beet-root.) Calyx urceolate, 5-cleft, persistent, finally indurated at base ; 

 stamens 5, with no staminodia ; ovary depressed, half inferior; stigmas 

 2 ; utricle with a thickish, hardened, depressed pericarp enclosed in 

 the calyx; seed horizontal. — Herbs with fleshy roots, furrowed stems, 

 alternate lvs. and greenish, spicate fls. 



B. vulgaris L. Lvs. acute, glabrous, undulato or entire, green or purplish, 

 tho lower ovate-oblong, attenuate at base into a loug petiole, upper subsessile, 

 oblong; fls. greenish-white, in sessile glomerules of 2 to 4 forming slender spikes 

 which are arranged in large, somewhat leafy panicles. — (g; Fields and gardens, 

 everywhere cultivated. Rt. mostly deep red. S. Eur. — This useful culinary, by 

 long culture has run into many varieties, distinguished chiefly by the color and 

 quality of the nutritious root 



/3. cicla. Scarcity. Root cylindraceous, rather slender, whitish ; lvs. some- 

 what rough or hispid, with very thick veins ; fls. 3 together. 



y. rapa. Turnip Beet. Root short and thick, sweet and juicy, white or red. 



6. mangel-wurtzel. Root very largo, mostly white. Cultivated for stock. 



2. CYCLOLCTMA, Moquin. (Gr. kvicXoc, a circle, XCb^ia, border; 

 referring to the appendage of the calyx.) Calyx urceolate, 5-cleft, lobes 

 strongly keeled, persistent, finally appendaged outside with a circular, 

 membranous, horizontal border or crown; stamens 5; styles 3; utricle 

 depressed, enclosed in the transversely winged calyx. — (J) Herbs with 

 furrowed stems, alternate, petiolate, lobed lvs., and a spreading panicle 

 of small sessile fls. 



C. platyphyllum Moq. Sandy banks of tho Miss.. 111. (opposite St. Louis) and 

 westward. St wide-branched, ascending 1 to 2f from a prostrate base, white- 

 downy above. Lvs. 2' long more or less, oblong-lanceolate, petiolate, sinuate- 

 toothed or lobed, lobes sharply mucronate, Fls. less than 1" long, 1 to 3-glom- 

 erate. Panicle leafless. Crown scarious. Seed black. JL, Aug. 



3. CHENOPCTDIUM, Tourn. (Gr. w\l, a goose, -rrovg, foot; from 

 the resemblance of tho leaves.) Calyx bractless, 5-cleft, lobes often 

 keeled, never appendaged, more or less enclosing the fruit ; stamens 5 ; 

 styles 2 ; utricle depressed, membranous, seed mostly horizontal, lentic- 

 ular. — Iierbs often glaucous or glandular, with alternate, often rhombic 

 leaves, and the minute fls. glomerate in panicled spikes. 



6 Plants smooth, never glandular, ill-scented. Embryo a complete ring (*). 



* Herbage green, rarely purplish, not glaucous or mealy (a). 



a Leaves entire, ovate-ohlonir, on slender petioles No. 1 



a Leaves toothed or lobed, petiolate Nos. 2—4 



* llerb.-ure claucous or whitish, covered with mealiness Nos. 6— T 



{ Plant* jriandnlar-puberulent, green, aromatic. Embryo a hall' ring (b). 



b Flowers glomerate, axillary, in spike-like racemes Nos. 8, 9 



b Flowers cymous, innumerable, in long, raceme-like paniclas No. 10 



1 C. polyapermum L. Procumbent or suberect, branched from tho base ; lvs. 

 petiolate, divaricate, ovate or oblong, obtuse or acute, thin, entire, glabrous, 



