434 CHENOPODIACEiE. (gOOSEFOOT FAMILY.) 



middle. — Very variable. The typical form scarcely occurs except as natu- 

 ralized from Europe. — Var. hastXtl'm, Gray. Erect or spreading, stout, 

 at least the lower leaves broadly triangular-hastate, often coarsely and irregu- 

 larly toothed. Salt and brackish places, on the coast from Can. to Va., 

 along the Great Lakes, and far westward. — Var. littorXle, Gray. Slender ; 

 leaves linear-lanceolate to linear, rarely subhastate or toothed. Canada to 

 N. J., and westward along the Great Lakes. — Var. subspicXtum, Watson. 

 A low erect and often simple form (.3- 12' high), usually quite scurfy; leaves 

 lanceolate-hastate (^- 1' long). Minn, to central Kan., and westward. 



2. A. arenarium, Nutt. Si(veri/-jnealt/, diffusely spreading ; leaves ob- 

 long, narrowed at base, nearly sessile ; fruiting bracts broadly wedge-shaped, 

 united, 3-nerved, 2 - 5-toothed at the summit, and usually strongly muricate 

 and reticulate on the sides. — Sandy beaches, along the coast, Mass. to Fla. 



8. A. argenteum, Nutt. Usually low, much brauclied, gray -scurfy, 

 leafy ; leaves deltoid or subrhombic, often subhastate ; staminate flowers in 

 terminal spikes; fruiting bracts round-rhombic, indurated, united, the free 

 margins more or less dilated and deeply toothed, the sides variously appen- 

 daged. — Red River Valley, Minn., south and westward. 



6. COmSPERMUM, A. Juss. Bug-seed. 



Flowers perfect, single and sessile in the axils of the upper leaves reduced 

 to bracts, usually forming a spike. Calyx of a single delicate sepal on the 

 inner side. Stamens 1 or 2, rarely 5. Styles 2. Fruit oval, flat, with the 

 outer face rather convex and the inner concave, sharp-margined, a carijopsis, 

 i. e. the thin pericarp adherent to the vertical seed. Embryo slender, coiled 

 around a central albumen. — Low branching annuals, with narrow linear al- 

 ternate 1-uerved leaves. (Name formed of Kopis, a hug, and airep/jLa, seed.) 



1. C. hySSOpifolium, L. Somewhat hairy when young, pale; floral 

 leaves or bracts awl-shaped from a dilated base or the upper ovate and pointed, 

 scarious-margined ; fruit wing-margined. — Sandy beaches along the Great 

 Lakes, central Neb., Tex., and westward. — Leaves usually pungent. 



7. SALICCSRNIA, Tourn. Glasswort. Samphire. 



Flowers perfect, 3 together immersed in each hollow of the thickened upper 

 joints, forming a spike ; the two lateral sometimes sterile. Calyx small and 

 bladder-like, with a toothed or torn margin, at length spongy and narrowly 

 wing-bordered, enclosing the flattened thin utricle. Stamens 1 or 2. Styles 2, 

 united at base. Seed vertical, without albumen. Embryo thick, the cotyle- 

 dons incumbent upon the radicle. — Low saline plants, with succulent leafless 

 jointed stems, and opposite branches ; the flower-bearing branchlets forming 

 the spikes. (Name composed of sal, salt, and cornu, a horn ; saline plants with 

 horn-like branches.) 



1. S. mucron^ta, Bigel. Annual, erect, stout, naked below (2-12' 

 high), turning red in age; spikes thick, close! g jointed ; scales mucronate-pointed 

 and co«s/)/cf/o»s, especially when dry ; middle flower half higher than the lateral 

 ones or less, occupying nearly the whole length of the joint ; fruit pubescent ; 

 seed i-f" long. (S. Virginica, Graij, Manual; not L.) — Sea-coast from 

 N. Scotia to Va. 



