14 NORTH AMERICAN FLORA [Volum 21 
imperfectly enclosing the fruit; pericarp adherent; seed horizontal, 1.5-2 mm. broad, brownish- 
black, puncticulate, the margin obtuse. 
TYPE Locality: Europe. 
DIstRIBuTION: Quebec to Virginia, Texas, California, and British Colombia, apparently ad- 
ventive eastward; Europe, Asia, northern Africa, and the Hawaiian Islands. 
InLustrations: Vaill. Bot. Paris. pl. 7, f. 2; Fl. Dan. pl. 2049; Britt. & Brown, Ill. Fl. f. 1368; 
ed. 2. f, 1687; Engl. Bot. pl. 1919; Baxter, Brit. Bot. 1.352; Sturm, Deuts. Fl. 75: pl. 2; Reichenb. 
Ic. Fl. Germ. 24: pl. 243, pl. 244, f. 1; Towa Geol. Surv. Bull. 4: f. 60, f. 269, B; Moss, Cambr. Brit. 
FL. pl. 165; Hegi, Il. Fl.f. 543, p-t; Pratt, Fl. Pl. Great Brit. pl. 176, f. 3; Fiori & Paol.Ic. Fl. Ital. 
bares eee Itl. Handb. f. 842; G. T. Stevens, Ill. Guide pl. 35, f. 11; Bull. Mich. Exp. Sta. 
IV. Leptophylla. Tall or low, usually much branched, erect plants, usually copiously 
farinose with inflated white trichomes. Leaves short-petiolate, the blades linear to linear- 
lanceolate or narrowly oblong, entire or subhastate. Glomerules of flowers spicate or 
cymose. Calyx-lobes carinate, closely enclosing the fruit at maturity or erect. Pericarp 
free or adherent to the seed, green. Seed horizontal. 
6. Chenopodium subglabrum (S. Wats.) A. Nelson, Bot. Gaz. 34: 
362. 1902. 
Chenopodium leptophyllum subglabrum S. Wats. Proc. Am. Acad. 9: 95. 1874. 
Boirys subglabra Tamell, Am. Midl. Nat. 4: 306. 1916. 
Slender erect annual, 2-6 dm. high, simple below or usually much branched throughout, the 
branches ascending or spreading, stout,. often flexuous, green, glabrous; petioles one sixth to one 
third as long as the blades; leaf-blades linear or nearly so, 1-nerved, 2-3.5 cm. long, 4 mm. wide 
or less, acute or acuminate, pale-green, glabrous, or sparsely and finely farinose beneath, the 
upper blades shorter than the lower; flowers in small glomerules, these in slender interrupted 
flexuous spikes; calyx slightly farinose, the lobes orbicular-obovate, cucullate, carinate, obtuse 
or rounded at the apex, green; pericarp free; seed horizontal, 1.5 mm. broad, strongly com- 
pressed, dark reddish-brown, smooth, shining, the margin obtuse or acutish. 
Type LocaLiry: Sandhills of the Platte River. 
DIstRIBUTION: On sandhills, eastern Washington and Oregon to Montana and central Nebraska. 
7. Chenopodium leptophyllum Nutt.; (Moq. in DC. Prodr. 13?: 71, 
as synonym. 1849) S. Wats. Proc. Am. Acad. 9:94. 1874. 
Chenopodium album leptophyllum Mog. in DC. Prodr. 132: 71. 1849. 
Botrys leptophylla Nieuwl. Am. Midl, Nat. 3: 275. 1914. 
Erect annual, 2-8 dm. high, simple or branched below, usually much branched above, the 
branches stout or slender, ascending or suberect, copiously farinose or becoming glabrate; 
petioles short, less than one fourthas long as the blades, commonly only 3—4 mm. long; leaf-blades 
linear or lance-linear, 1.5—4.5 em. long, usually 2-3 mm., rarely 6 mm. wide, obtuse or rounded 
to acutish at the apex, attenuate or cuneate at the base, entire, or occasionally with 2 small 
basal lobes, thick, densely white-farinose, or glabrate on the upper surface, the upper blades. 
little reduced; flowers in small or large, dense glomerules, these in dense or interrupted, slender 
or stout, paniculate spikes; calyx densely farinose, the lobes obovate or oval, obtuse, carinate, 
completely enclosing the fruit; pericarp free; seed horizontal, 1 mm. broad, nearly black, 
smooth, shining, the margin obtuse. 
Type Locatity: California, : : : 
DisrrRiBurion: In dry soil, Manitoba, Alberta, and southward to Sonora, Chihuahua, and Cali- 
fornia, and occasionally adventive eastward; on sandy beaches, Maine to New Jersey; adventive 
in Europe. : 
I,LUSTRATIONS: Britt. & Brown, Ill. Fl. f. 1361; ed. 2. f. 1680; G. T. Stevens, Ill, Guide pl. 35, 
8. Chenopodium pratericola Rydb. Bull. Torrey Club 39: 310. 
1912. 
Chenopodium leptophyllum S, Wats. Proc. Am. Acad. 9: 94. in part. 1874. Not C. leptophyllum 
1874. 
Nutt. . 
Chenopodium petiolare leptophylloides Murr, Bull. Herb. Boiss. II. 4: 994, 1904, 
Boirys pratericola lunell, Am. Midl. Nat. 4: 306. 1916, 
