CHENOPODIACEiE. (GOOSEFOOT FAMILY.) 431 



1. CYCLOLOMA, Moquin. Winged Pigweed. 



Flowers perfect or pistillate, bractless. Calyx 5-cleft, with the coucave 

 lobes strongly keeled, enclosing the depressed fruit, at length appeudaged 

 with a broad and continuous horizontal scarious wing. Stamens 5. Styles 3 

 (rarely 2). Seed horizontal, flat ; coats crustaceous. Embryo encircling tlie 

 mealy all)umen. — An annual and much-branched coarse herb, with alternate 

 sinuate-toothed petioled leaves, and very small scattered sessile flowers in open 

 panicles. (Name composed of kvkKos, a circle, and \(t>fxa, a border, from the 

 encircling wing of the calyx.) 



1. C. platyphyllum, Moquin. — Diffuse (6-15' high), more or less 

 arachnoid-pubescent or glabrate, light green or often deep purple. — Sandy 

 soil, Minn, to W. 111., S. Ind., Ark., and westward across the plains. 



2. KOCHIA, Roth. 



Characters nearly as in Cycloloma, but the seed-coat membranaceous and 

 the albumen wanting. — Annuals or suffruticose perennials, with fiat or more 

 usually linear and terete leaves. (Named for W. D. J. Koch, a German 

 botanist.) 



K. scopXria, Schrad. Annual, erect, puberulent or glabrate, branching; 

 leaves narrowly lanceolate to linear ; flowers in small axillary clusters, ses- 

 sile, each sepal developing a thick wing. — Sparingly introduced ; Vt., Ont., 

 and 111. (Nat. from Eu.) 



3. CHENOPODIUM, Tourn. Goosefoot. Pigweed. 



Flowers perfect, all bractless. Calyx 5- (rarely 4-) parted or lobed, un- 

 changed in fruit or becoming succulent and berry-like, more or less enveloping 

 the depressed fruit. Stamens mostly 5 ; filaments filiform. Styles 2, rarely 3. 

 Seed horizontal or vertical, lenticular; the coat crustaceous; embrvo coiled 

 partly or fully round the mealy albumen. — "Weeds, usually with a white 

 mealiness, or glandular. Flowers sessile in small clusters collected in spiked 

 panicles. (Named from xhv, ^ goose, and Trovs,foot, in allusion to the shape 

 of the leaves.) — Our species are mostly annuals, flowering tlirough late 

 summer and autumn, growing around dwellings, in manured soil, cultivated 

 grounds, and waste places. 

 § 1. Annual, more or less vieahj, not glandular nor aromatic ; fruiting calyx 



dry ; seed horizontal ; embryo a complete ring. 

 * Pericarp very easily separated from the seed ; leaves entire or rarely sinuate- 

 dentate. 



1. Co Boscianum, Moq. Erect, slender (2° high), loosely branched, 

 often nearly glabrous ; leaves oblong- to linear-lanceolate (1 -2' long), attenuate 

 into a slender petiole, acute, the lower sinuate-dentate or often all entire ; 

 flowers small, solitary or in small clusters upon the slender branchlets ; calyx 

 not strongly carinate. (C. album, var. Boscianum, Gray, Manual.) — N. Y. to 

 Minn., south to N. C. and Tex. 



2. C. leptophylluni, Nutt. Densely mealy or rarely nearly glabrous* 

 {k-\\° high), simple or branched, often strict; leaves linear {^-V long), 

 entire, rather slwrdy petioled ; flowers closely clustered, in dense or interrupted 

 spikelets ; calyx-lobes strongly carinate. — Sea-coast, Conn, to N. J., north 

 shore of L. Erie, and from S. Dak. to Col., N. Mex., and westward. 



