296 



CHENOPODIACEAE 



Fruiting calyx bordered by a thin horizontal wing; leaves 

 very spiny. 



i. Chenopodium L. 



Embryo a complete ring; plants not glandular 



Leaves white-mealy on the lower surface, not glandular. 

 Leaves or some of them sinuate toothed or lobed. 



Sepals strongly keeled in fruit; stem erect, tall. 1. 

 Sepals not keeled in fruit; stem decumbent. 2. 



Leaves mostly entire, narrowly linear or oblong. 3. 



Leaves green and glabrous or nearly so on both surfaces 

 when mature. 

 Seeds all vertical; style filiform, one fourth to one 



half as long as the diameter of the utricle. 

 Seeds vertical and horizontal in the same inflorescence, 

 or all horizontal. 

 Leaves ovate-oblong, entire. 

 Leaves very coarsely toothed, usually cordate at 



base. 

 Leaves merely sinuate or toothed. 

 Stamens 5; calyx not fleshy. 



Pericarp readily separable from the seed. 

 Pericarp firmly attached to the seed. 

 Flower clusters, at least the upper, 



longer than the leaves. 

 Spikes loosely panicled in the axils, 

 the panicles shorter than the 

 leaves. 

 Stamens only I or 2; calyx slightly fleshy, 

 red. 

 Embryo an incomplete ring; plants glandular 



Leaves ovate or oblong, pinnately lobed; flowers in long 



loose panicles. 

 Leaves lanceolate; flowers in continuous or interrupted 

 spikes. 

 Spikes borne in the axils of the numerous small 



upper leaves. 

 Spikes in large, commonly leafless, terminal panicles. 



8. Salsola. 



C. album. 

 C. glaucum. 

 C. leptophyllum. 



4. C. Bonus-IIenricus. 



C, polyspermum. 

 C. hybridum. 



7. C. Boscianum. 



8. C. urbicum. 



9. C. tnurale. 



10. C. rubrum. 



II. C. Bolrys. 



12. C. ambrosioides. 



13. C. anthelminticum. 



i. C. album L. In waste places, a common weed: throughout 

 N. Am. Naturalized from Eu. Also in Asia. 



Common throughout the range, and with the form known as C. 

 viride Auct. (C lanceolatum Muhl.) often a troublesome weed. 



2. C. glaucum L. A weed in the waste places: throughout N. 



Am. Naturalized from Europe. 

 Locally abundant as a roadside weed. 



3. C. leptophyllum (Moq.) Nutt. In dry soil: Man. and N. W. 



Terr, to Mo., N. Mex. and Ariz. Also on the shores of Lake 

 Erie, and on sands of the seashore, Conn, to N. J. 



