Herbs, sprawling or erect, sometimes rooting at the lower nodes; branches tomentose, sometimes whitish, often drying sulcate. Leaves opposite in the inflores-cence, alternate below, mostly spatulate, irregularly crenate, apically rounded, basally cuneate, discolorous, drying dark and glabrous above, the emerging leaves glandular punctate, beneath grey-tomentose with arachnoid hairs, the ca. 4 pinnate veins on each side of the midvein prominent; petiole wanting or consisting of a narrowed portion of the leaf blade, rotund, basal auricles often present. Inflores-cence of single, paired heads axillary to the expanded and enveloping leaf bases. Heads discoid, 4-5 mm tall; involucral bracts 2-5, ca. 4 mm tall, oblong, hyaline, apically rounded and herbaceous, glabrous except on the tips; receptacle minute; paleas oblong, flat, hyaline with slightly expanded, pubescent, herbaceous tips; florets ca. 10, the corolla tubular, ca. 2 mm long, the 4 lobes oblong and forming ca. 1/2 the length, the anthers 4 with short, round appendages, the style apically pilose, the branches short, pilose, the nectary prominent. Achenes flat, cuneiform, 4-5 mm long, each side 2-3-ribbed, the ribs and angles minutely ciliate; pappus of 2 stout, diverging awns 1-2 mm long and several minute awns on each side.
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