434 CHENOPODIACE.E. (OOOSEFOOT FAMILY.) 



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

 ralized from Europe. Var. HASTATUM, 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. LITTORALE, Gray. Slender ; 

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

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

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

 lanceolate-hastate (- V long). Minn, to central Kan., and westward. 



2. A. arenarium, Nutt. Silvery-mealy, 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. 



3. A. argenteum, Nutt. Usually low, much branched, 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. CORISPERMUM, 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 caryopsis, 

 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-nerved leaves. (Name formed of icopis, a bug, and (nr^p^a, seed.) 



1. C. hyssopif61ium, 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-margitied. Sandy beaches along the Great 

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



7. SALICORNIA, 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. mucronata, Bigel. Annual, erect, stout, naked below (2-12' 

 high), turning red in age; spikes thick, closely jointed ; scales mucronate-pointed 

 am' jnnspicuous, especially when dry; middle flower half higher than the lateral 

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

 seed -" long. (S. Virginica, Gray, Manual; not L.) Sea-coast from 

 N. Scotia to Va. 



