CHENOPODIACEAE 73 



1. Chenopodium. 368. 



Stems erect, usually tall. 



Leaves mostly entire, the lower rarely lobed. 



Leaves white-mealy beneath. 2. C. leptophyllum. 



Leaves green on both sides. 



Leaves linear to oblong, 2-6 mm. wide. 



3a. C. leptophyllum subglabrum. 

 Leaves lanceolate, to oblong-lanceolate, broader. 4. C. boscianum. 

 Leaves mostly dentate or lobed. 



Calyx not red and fleshy in fruit, stamens 5, 

 Leaves white-mealy beneath. 



Leaves ovate to lanceolate, much longer than wide. 



1. C album. 

 Leaves broadly triangular-hastate, nearly as wide as long. 



6. C. incanum. 

 Leaves green on both sides or but slightly mealy beneath. 

 Leaves as broad as long. 



Leaves sinuate-dentate. 5. C. fremontii. 



Leaves sharply dentate, v.ith 1-4 large spreading teeth on 

 each side. 8. C. hybridum. 



Leaves m.uch longer than wide. 

 Leaves not strong scented. 



Leaves mostly irregularly lobed. 2. C. lanceolatum. 



Leaves mostly entire. 4. C. boscianum. 



Foliage strong scented. 



Leaves at least some of them pinnately lobed. 



10. C. botrys. 

 Leaves ripand-dentate, undulate or the upper entire. 



11. C. ambrosloides. 

 Calyx reddish and slightly fleshy in fruit; stamens 1 or 2. 



9. C. rubrum. 

 Stems prostrate, less than 1 dm. high. 12. C. humlle. 



1. Chenopodium album L. Lamb's quarters. 

 A common weed in fields all over the state. Anselmo; Belmont; 

 Broken Bow^; Hastings; Lincoln; :Mullen; Peru; Thedford. 



2. Chenopodium lanceolatum Muhl. 

 Chenopodium viride L. 



Throughout the state, but less common than the last. Long Pine; 

 Red Cloud; Valentine; Wood River. 



3. Chenopodium leptophyllum (INIoq.) Nutt. 



A common weed in the western part of the state. Custer County; 



Deuel County; Kearney; Lodge Pole Creek; Mullen; Pishelville: Plum- 



mer Ford; Valentine. 



3a. Chenopodium leptophyllum subglabrum S. Wats. 



Nebraska according to Britton's :\Ianual. 



4. Chenopodium boscianum ^loq. 



Through most of the state, but not common. Belmont; Burnett; Long 

 Pine; Red Cloud. 



5. Chenopodium fremontii S. Wats. 



Common in the western part of the state. Alliance; Anselmo; Banner 

 County; Custer County; Paddock; Valentine; Whitman. 



