Chbnopodium. CHENOPODIACEiE. 133 



Dirision 2, Sfirolobe^. Embryo apiral. 

 Tribe 4. SUEDINE^, Embryo in a flat spiral. Seeds with a double integument. 



8. SuiDA. Calyx urceolate, 5-parted, usually baccate in fruit, not appcndiculate. Style* united. Seed vertical or 



horizontal. 



Tribe 5. SALSOLEjE. Embryo in a conical spiral. Seeds with a single integument. 



9. Salsola. Calyx with a winged border when in fruit. Stamens inserted into a hypogynous disk. Scale* none. 



Seed horizontal. 



Division 1. CYCLOLOBE^. C. A. Meyer. 



Embryo curved into a more or less complete ring, around a copious {seldom scanty) central 



albumen. — Leaves usually dilated, fiat. 



Tribe I. ANSERINEJE. Moq.-Tand. 



Flowers perfect, without bracts. Fruit an utricle or achenium, rarely somewhat baccate. 

 Seed vertical or horizontal, with a double integument. Embryo nearly or quite annular, 

 — Leaves usually more or less triangular-rhomboid. 



I. CHENOPODIUM. Linn. ; Moq.-Tand. Chenop. p. 20. aoosEPOOT. PIGWEED. 

 [So named irom the Greek, cAen, chmo$, a goose, and povs, a foot ; in allusion to the shape of the leaf in some species,] 



Calyx 5-parted, not becoming succulent, closed upon the fruit but not wholly covering it, 

 without appendages. Utriculus depressed. Stamens 5. Seed horizontal, lenticular. 

 Embryo perfectly annular. — Herbs or rarely undershrubs, often sprinkled with a mealy or 

 scaly powder. Leaves mostly petiolate and triangular-rhomboid or hastate, toothed or entire. 



1. Chenopodium album, Linn. Goosefoot. Lamh' s-quarters. 



Stem herbaceous, erect, branched; leaves rhomboid- ovate, entire and obtusely cuneate 

 at the base, coarsely sinuate-toothed, pale underneath , the uppermost oblong or narrowly 

 lanceolate, and nearly or quite entire ; racemes paniculate, somewhat spiked, often nearly 

 leafless ; segments of the calyx prominently keeled ; seeds smooth and shining, acute on the 

 margin.— Linn. sp. 1, p. 219 ; Engl. bot. t. 1723 ; Pursh, fl. 1. p. 198 ; Ell. sk. I. p. 330 ; 

 Bigel. fl. Bost. p.lOl ; Torr. Jl. I. p. 294 ; Beck, bot. p. 296 ; Darlingt. fl. Cest. p. 176; 

 Moq.-Tand. Chenop. p. 29, 



Annual, Stem 2-5 feet high, pyramidally or paniculately branched, angular and grooved. 

 Leaves 2-3 inches long, rather fleshy, strongly 3-nerved ; the under surface (and partly also 

 the upper) covered with very minute whitish cup-like scales. Flowers in roundish clusters, 

 which are collected in spiked panicles. Calyx green, depressed, 5-angled ; the «egment8 

 roundish, inflexed. Seeds nearly black. 



Gardens, waste grounds, etc. Introduced from Europe, July - September, Sometimes 

 the leaves are more entire, when it appears to be the C. viride of Linnasus, 



