Class V. Order II. 107 



membranous margin, flattish, but rising 1 in the centre. Seed en- 

 closed in the calyx, cockle-shaped from its spiral cotyledons. 

 Salt marshes. July, August. 



Plants of this genus are used in the manufacture of Soda. 



SALSOLA SALSA. Mich. Smooth Salt Wort. 



Herbaceous, decumbent, smooth ; leaves linear, 

 unarmed, fleshy ; fructification crowded, somewhat 

 spiked. 



Stem somewhat erect with numerous spreading branches near- 

 ly smooth, furrowed. Leaves linear, fleshy, semicylindric, some- 

 what of a glaucous hue, not prickty. Flowers obscure, sessile, 

 two or three together in the axil of each leaf. Calyx leaves ob- 

 tuse, connivent. Stamens slightly projecting. Seed small, spi- 

 ral. Salt marshes. August. Annual. 



111. CHENOPODIUM. 



CHENOPODIUM ALBUM. L. White, Goosefoot. Hog-weed. 

 Leaves rhomboid-ovate, eroded, entire behind, the 

 upper ones oblong, entire ; seeds smooth. Sm. 



A common weed in cultivated and waste ground. Stem chan- 

 nelled, branched ; leaves mealy, the lower ones unequally tooth- 

 ed above, the upper ones smaller, entire. Bunches of flowers 

 erect, green or mealy. July. Annual. 



CHENOPODIUM RUBRUM. L. lied Goosefoot. 



Leaves triangular, approaching to rhomboid ; deep- 

 ly toothed, and somewhat sinuated ; clusters upright, 

 compound, leafy. Sm. 



More green, fleshy, and compact than the last. Leaves sinu- 

 ated, tapering at base. Clusters of flowers, close, interspersed 

 with small leaves. Among rubbish, especially in low ground. 

 Annual. 



CHENOPODIUM TIYBRIDUM. L. Tall Goosefoot. 



Leaves cordate, angular-toothed, acuminate ; ra- 

 cemes branched, somewhat cymose, divaricate, leaf- 

 less. Sm. 



