CHENOPODIUM. 



723. C. ambrosioides Linn. sp. pi. 320. Rom. and Sch. 

 ii. 260. Torrey fl. amer. i. 295. Common in waste places 

 in the United States. (Mexican tea.) 



An annual. Stem 1-2 feet high, much branched, often spread- 

 ing, green, a little downy. Leaves lanceolate, 1| inch long, on 

 short stalks, acute at the base, remotely toothed ; the upper ones 

 almost linear. Racemes simple, axillary, leafy ; about 2 inches long, 

 erect. Flowers green. All the plant has an agreeable penetrating 

 smell. It has been used with advantage in the treatment of nervous 

 diseases, and Plenck commends it in chorea. 



ATRIPLEX. 



Polygamous. $ . Calyx inferior, concave, permanent, in 5 

 deep, equal, ovate, segments, thin or membranous at the edges. 

 Filaments 5, awl-shaped, from the bottom of the calyx, opposite 

 to its segments, and about as long. Anthers of 2 round lobes. 

 Ovary superior, orbicular, often very imperfect. Style short, 

 deeply divided. Stigmas simple, spreading. Seed 1, orbicular, 

 depressed, wrapped in a thin close utricle, and covered by the 

 closed, permanent, 5-angled calyx. 5 . Sepals 2, large, flat, 

 compressed, cordate, closely enclosing a 1 -seeded utricle. 



724. A. angustifolia Smith fl. brit. 1092. Eng Sot. t. 1774. 

 Eng.fl. iv. 258. A. patula Huds. FL angl. 443. Common 

 in waste places. 



An annual, with a dull greyish green aspect. Stem herbaceous, 

 spreading. Leaves lanceolate, entire; the lower ones partly 3-lobed. 

 Calyx of the fruit hastate, slightly warted at the sides. Seeds said to 

 be emetic. 



725. A. hortensis Linn, sp.pl 1493. Lam. enc.i. 276. illustr. 

 t. 853. f. 1. Schkuhr. t. 349. Homer and Schultes vi. 282. 

 Tartary. (Garden Orache.) 



An annual. Stems 45 feet high, striated, smooth, bluntly angular, 

 branched. Leaves generally alternate, rather large, triangular, toothed, 

 of the same colour on both sides, acute, when young mealy. Flowers 

 small, in terminal, interrupted, branched spikes. Sepals of the fruit 

 ovate, reticulated, entire. Seed reputed to be emetic. The leaves 

 an old-fashioned potherb, once cultivated in lieu of Spinach. 



SALSOLA. 



Flowers hermaphrodite, bracteate. Sepals 5, acquiring a trans- 

 verse appendage at the back. Hypogynous scales 0. Stamens 5 

 (seldom 3) inserted into an hypogynous ring or cup. Stigmas 2, 

 usually combined at the base, rarely 1, subsessile and capitate. 

 Utricle depressed, somewhat papery. Seed horizontal, without 

 albumen, with membranous integuments. Embryo spiral. Ra- 

 dicle dorsal. Leafy or leafless herbaceous plants and shrubs, 

 349 



