CHENOPODIACE^. (gOOSEFOOT FAMILY.) 363 



or less enveloping {he depressed fruit. Stamens mostly 5 : filaments filiform. 

 Styles 2, rarely 3. Seed horizontal (sometimes vertical in Nos. 7 and 9), len- 

 ticular: embryo coiled partly or fully round the mealy albumen. — Weeds, 

 usually with a white mealiness, or glandular. Flowers sessile in small clusters 

 collected in spiked panicles. (Name from x^^i " goose, and ttoSs, foot, in allu- 

 sion to the shape of the leaves.) — Our species are all annuals (except No. 9?), 

 flowering through the summer, growing around dwellings, in manured soil, 

 cultivated grounds, and waste places. 



f 1. CHENOPODIUM Pkopbe. — Smooth ormealy, never jn^)escent or glandular 

 nor sweet-scented : embrijo a complete ring. 



* Leaves entire : Tierbage green, sometimes turning purplish, no mealiness : calyx- 



lobes not keeled nor wholly mdosiitg the fruit. 



1 . C. POLY8PERMOM, L. Stems slender, ascending ; leaves oblong or ovate- 

 oblong, obtuse or acutish, narrowed into a slender petiole. — A scarce garden- 

 weed, about Boston, C J. Sprague. Woods, near Mercersburg and Eeading, 

 Penn., Porter: tlie var. spicatum (C. acutifolium. Smith). (Nat. fi-om Bu.) 



* * Leaves strongly and sharply toothed, green throaghovt {mealiness obscure or none), 

 on slender peUoles : calyx-lobes slightly or not at all keeled, not completely enclosing 

 the ripe fruit {least enclosing in No. 2, most so in No. 4). 



2. C HYBKiDUM, L. (Maplb-leaved Goosefoot.) Blight green ; stem 

 widely much branched (2° -4° high) ; leaves thin (2' -8' long), somewhat trian- 

 gular and heart-shaped, taper-pointed, sinuate-angled, the angles extended into a 

 few large and pointed teeth ; racemes diffusely and loosely panicled, leafless ; the 

 smooth calyx-lobes keeled ; seed sharp-edged, the thin pericarp adhering closely 

 to it. — Common. Heavy-scented, like Stramonium. (Nat. from Eu.) 



3. C. i5iiBicnM, L. Kather pale or dull green, with erect branches (l°-3° 

 high) ; leaves triangular, acute, coarsely many-toothed.; spikes erect, crowded in a 

 long and narrow racemose panicle ; calyx-lobes not keeled ; seed with rounded mar- 

 gins. — "Var. KHOMBir6nnM, Moquin (C. rhombifolium, Muhl.), is a form 

 with the leaves more or less wedge-shaped at the base, and with longer and 

 sharper teeth. — Not rare eastward. (Nat. from Eu. ) 



4. C. MUK^LE, L. Ascending, loosely branched (l°-lj° high); leaves 

 rhomboid-ovate, acute, coarsely and sharply unequally toothed, thin, bright green ; 

 spikes or racemes diverging : and somewhat corymbed ; calyx-lobes scarcely keeled; 

 seed sharp-edged. — Boston, New York, &c. : rare. (Adv. from Eu.) 



* # # Leaves toothed, repand-angled, or sometimes nearly entire, more or less white- 

 mealy, as well as the flowers ; calyx-lobes distinctly keeled, usually {but mt always) 

 perfectly enclosing the fruit. 



5. C. oi»nLiF6LiUM, Schrad. Leaves round-rhombic, spreading, long-petioled, 

 very obtuse, somewhat 3-lobed, toothed, the upper oblong-lanceolate ; racemes 

 panicled, rather loose ; seed with rather obtuse margins. — Seen from U. S. by 

 Moquin ; probably it has been confounded with the next ; perhaps justly. (Adv. 

 from Eu. ) 



6. C. Album, L. (Lamb's-Quaktebs. Pigweed.) Leaves ascending, 

 varying from rhombic-omte to oblong-lanceolate, or the upper linear-laticeolate, acute. 



