Fig 44. [Willow-leaved Dock. Rumex Mexicanus] Meisn. Rumex salicifolius Weinm.

Willow-leaved Dock. Rumex Mexicanus Meisn. Rumex salicifolius Weinm. Calyx-wings triangular-ovate, about 3 mm. long, each bearing a large tubercle; achene dark reddish brown, smooth, shining, 1.8–2.2 mm. long, ovoid, angles prominent, the sides viewed transversely rounded, the sides of the base as viewed vertically, rounded, straight or slightly concave, near the apex straight or concave. A native of Northeastern North America. Not common.

GOOSEFOOT OR PIGWEED FAMILY. CHENOPODIACEAE.

Fig 45.[Spreading Orache. Atriplex patula] L.

Spreading Orache. Atriplex patula L. Seeds are likely to occur in either of three different guises, depending upon the degree of their ripeness or the amount of threshing to which they have been subjected.

Achenes thin, dull, granular, gray, closely fitting the seed; seed jet-black, shining, flattened, nearly circular, edge bluntly rounded, and notched in one place, a groove leading from one side of a margined protuberance part way to the center of the face, 1.5–1.8 mm. in diameter. Introduced from Europe. Seldom troublesome.

Fig 46.[Pigweed. Lamb's Quarters. Chenopodium album] L.