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3 Leaves white to gray, densely and finely scurfy, especially on the upper surface. | |
4 Seeds dimorphic with black seeds 1.5-1.7 mm long and brown seeds 2 mm long; all leaves alternate; [s. TX] | |
4 Seeds monomorphic, yellow to brown or reddish-brown; some leaves opposite or subopposite, rarely all alternate; [collectively widespread]. | |
12 Bracteoles typically with well-developed spongy-thickening at base, variously toothed; black seeds rare or lacking, or of various size; leaves all entire or some or all deltoid-hastate with lobes spreading to antrorse and otherwise entire or irregularly toothed; plants usually green-colored, sometimes with moderate to strong red-tinging | |
13 Lower leaves linear or ovate-lanceolate, sometimes toothed and/or with proximal-most lobe largest, but then not triangular, or, if so, then leaves thick textured. | |
14 Leaves linear to lanceolate or oblong, thin, green or slightly scurfy when young; seeds ovoid, not wider than long | |
14 Leaves ovate-lanceolate or linear, or triangular or triangular-hastate, typically thickened and ± scurfy, even in age; seeds ellipsoid, wider than long | |
13 Lower leaves (sometimes all or most) triangular and thin textured. | |
15 Bracteoles short stipitate or sessile; bracteole margins entire to denticulate to laciniate; inflorescences with leafy bracts to the tip, glomerules loose, irregularly spaced; bracteoles thick spongy, margin united to middle; seeds 2.5+ mm wide, usually not distinctly dimorphic, dark brown to black, irregularly biconvex; radicle median, ± antrorse | |
15 Bracteoles sessile; bracteole margins entire to slightly toothed; inflorescences with leafy bracts only at base, glomerules tight, contiguous or irregularly spaced; bracteoles thin to slightly thickened and spongy, margin united only at base; seeds mostly less than 2.5 mm wide, usually distinctly dimorphic, mostly small and glossy black, but also some larger, and dull brown, flattened and disc-shaped; radicle subbasal, obliquely antrorse to spreading |