CHENOPODIACE^. (OOOSEFOOT FAMILY.) 431 



1. CYCLOLOMA, Moquin. Winokd Pi(;\veed. 



Flowers perfect or pistillate, bractless. Calyx ri-clcft, with the concave 

 lobes strongly keeled, enclosinf^ the depressed fruit, at len^^th appendagcd 

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

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

 mealy albumen. — An annual and nmch-branched coarse herb, with alternate 

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

 panicles. (Name composed of kvkKo^, a circle, and Aw/jlu, a border, from the 

 encircling wing of the calyx.) 



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

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

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



2. KbCHIA, Koth. 



Characters nearly as in Cycloloma, Imt the seod-coat membranaceous and 

 the all)umen wanting. — Annuals or suffrntico.sc perennials, witii flat or more 

 usually linear and terete leaves. (Named for IT. D. ./. Koch, a (ierman 

 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 introduc'ed ; 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, rarelv 3. 

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

 partly or fully round the mealy all)umen. — Weeds, usually with a white 

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

 panicles. (Named from xV, <' goose, and irovs,foot, in allusion to the shape 

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

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

 grounds, and waste places. 

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



dri) ; seed horizontal ; embri/o a con\pUte ring. 

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

 dentate. 



1. C. Bosci^num, Moq. Erect, slender (2° high), loosely branched, 

 often nearly glabrous ; leaves oblong- to Hnear4anceolate (I -2' long), attenuate 

 into a slender ;;e^o/e, acute, the lower siuuate-dentate or often all entire; 

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

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

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



2. C. leptophyllum, Nutt. Densely mealy or rarely nearly glabrous 

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

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

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

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



