Herbs, annual, 0.2-5.5 dm. Stems simple or freely branched, sometimes densely matted, prostrate, decumbent, ascending, or erect. Leaf blades narrowly to very broadly ovate, oblong, orbiculate, or reniform, 0.2-4.5 × 0.2-2.7 cm, base broadly cuneate, rounded, truncate, or nearly cordate, apex acuminate, acute, obtuse, or rounded; proximal pair of lateral veins arising at junction of blade and petiole. Flowers: involucral bracts 1-4.5 mm; tepals 2-2.8 mm, shorter or longer than bracts. Achenes light brown, symmetric, 0.9-1.2 × 0.6-0.7 mm, apex obtuse, mucro apical; stipe centered, short-cylindric, basally dilated.
