12 



CHENOPODIACEAE. 



Vol. II. 



7. Chenopodium Boscianum Moq. Bosc's 

 Goosefoot. Fig. 1683. 



Chenopodium Boscianum Moq. Enum. Chenop. 21. 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'-2l' 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. Fremont's Goosefoot. Fig. 1684. 



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

 1871. 



Annual, glabrous or. very nearly so, light green, 

 stem stout or slender, erect, grooved, branched, 1°- 

 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'-4' 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 V 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. 



g. Chenopodium urbicum L. Upright or City Goosefoot. Fig. 1685. 



Chenopodium urbicum L. Sp. PI. 218. 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'-$' long; spikes in terminal and axillary 

 narrow erect panicles, the upper longer than the 

 leaves ; calyx i" 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. 



