Plants to 5.2 dm, finely minutely ash-gray tomentose, overlayer sparsely pubescent, hirsutulous. Stems mostly 1–2 mm wide, nodes slightly extended to 0.7 mm. Leaves: stipules narrowly triangular, 3–4 mm, apex geniculate or curved; petiole 0.6–0.8 mm wide; blade discolor, abaxially gray-olive, adaxially darker, reddish brown, ovate-elliptic, to 6 × 4.5 cm, slightly resinous, base widely cuneate, truncate, or rounded, margins crenate-dentate or crenate-denticulate, apex widely obtuse, rounded, surfaces: abaxial sparsely to densely tomentose, adaxial densely tomentulose, trichome rays 0.2–0.4 mm. Inflorescences lax, paniculiform, lateral branches to 15 cm, clusters 5 or 6, oblong or deltate, with 1 terminal flower, the 2 or more dichasia (cincinni) arising from accessory shoots below it; bracteoles free, bracts unequal, major bract of primary cyme elliptic, oblong, ovate, or obovate, 0.8–2.2 mm wide, apex obtuse or rounded, (2–)3-cuspidate or 3-dentate, sharply pointed “cuspidate” incised lobes linear, narrowly triangular, or triangular, unequal, to 1.7 m long; minor bracts lanceolate. Flowers sessile; calyx 3.5–4.8 mm, densely to sparsely tomentulose, and hirsutulous and sparsely hirsute, tube 1.8–2.4 mm, lobes 1.5–2.4 mm; petals bright yellow proximally, pale yellow distally, obtriangular, 3.7–4 × 1–1.4 mm, apex truncate, minutely puberulent across apical margin, trichome rays 1–2, abaxial surface minutely stellate-puberulent, stellate trichome rays dense, 8–10, adaxial surface sparsely pilose or villous, claw adherent for (0.4–)0.8–1 to stamen tube base; stamens 2.6–3 mm, tube 2.2 mm, red-papillose distally; anthers (0.7–)0.9–1 mm, base sagittate; pistil 2.6–3.6 mm; ovary velutinous-hirsute apically; styles 1.3 × 0.1 mm, lateral, stellate-hirsutulous; stigmas 10–26-branched, and upper sides of valve suture. Seeds dark chocolate brown with light brown zone, obovoid-obconic, 1.6–2.3 × 1–1.4 × 1.2–1.3 mm, apex broadly rounded, nearly truncate in lateral view, smooth, apex with very fine raised concolorous line.
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