12 



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Vol. II, 



7. Chenopodium Boscianum .Mo(|. Bosc's 

 Goosefoot. b'ig. 1683. 



Chenopodium Boscianum Moii. Enum. Clicno]). I'l. 1840. 



Annual, light green, stem slender, erect, striate, 

 usually much branched, l-3 tall, the branches very 

 slender, divergent or ascending. Leaves thin, green on 

 both sides, lanceolate or oblong-lanceolate, acute or 

 acuminate at the apex, narrowed at the base, slender- 

 petioled, i'-2i' long, the lower sinuate-dentate or nearly 

 all of them entire; flowers in slender terminal and axil- 

 lary spikes ; calyx-segments broadly oblong, obtuse, 

 scarious-margined, not keeled, or scarcely so in fruit, 

 herbaceous, nearly covering the utricle; styles short; 

 seed horizontal, readily separating from the pericarp, 

 black, shining; embryo completely annular. 



In woods and thickets. Connecticut to New Jersey. Indiana 

 and Minnesota, south to North Carolina and Texas.. 

 July-Sept. 



8. Chenopodium Fremontii S. Wats. Freniont'.s Goosefoot 



Chenopodium Fremonlii S. Wats. Bot. King's Exp. 287. 

 1871. 



Annual, glabrous or very nearly so, light green, 

 stem stout or slender, erect, grooved, branched, l- 

 3 tall. Leaves thin, green on both sides, broadly 

 triangular-hastate, sinuate-dentate or the upper en- 

 tire, mostly obtuse at the apex, truncate or abruptly 

 narrowed at the base, slender-petioled, I'-X long 

 and nearly as wide, the uppermost sometimes very 

 small, oblong or lanceolate and acute ; spikes slen- 

 der, axillary to the upper leaves and in terminal 

 panicles; calyx 2" wide, its segments keeled in 

 fruit, and nearly enclosing the utricle; pericarp 

 easily separable from the seed ; seed horizontal, 

 shining; embryo completely annular. 



In woods and thickets. South Dakota and Nebraska to 

 Montana and Nevada, south to New Mexico, Arizona and 

 northern Mexico. July-Sept. 



Chenopodium lirbicum L. I'pright or City Goosefoot. Fig. 1685. 



Chenopodium uibicum L. Sp. PI. Ji8. 1753. 



Annual, green or but slightly mealy, stem com- 

 monly stout, erect, branched or simple, channeled, 

 i-3 tall. Leaves hastate or triangular-ovate, 

 acute at the apex, truncate subcordate or abruptly 

 narrowed at the base, stout-petioled, coarsely and 

 irregularly dentate or the uppermost entire, the 

 larger 3'-5' long ; spikes in terminal and axillary 

 narrow erect panicles, the upper longer than the 

 leaves; calyx l" broad, its segments oblong, ob- 

 tuse, herbaceous, not keeled and not entirely en- 

 closing the fruit ; styles short ; seed horizontal, 

 rather firmly attached to the pericarp, its margins 

 rounded ; embryo a complete ring. 



In waste places, especially in the cities, Nova Sco- 

 tia and Ontario to southern New York. Adventive 

 from Europe. Much less common than the following 

 species. June-Sept. 



