Plants to 6(–10) dm, resinous, appearing subglabrous but microscopically densely sessile-glandular, usually sparsely and very minutely stellate-puberulent. Stems 1–3 mm wide, nodes knobby, joints exserted 0.8–1 mm. Leaves: stipules linear-triangular, to 5 mm; petiole 1–12(–20) × 0.4–0.6 mm, with low tubercles; blade concolor, dark brown, bronze, or coppery, drying brownish olive, usually broadly oblong to oblong, ovate-oblong, or obovate-oblong, sometimes ovate, to 5 × 3 cm, resinous, base widely cuneate to slightly cordate, margins sharply dentate or sharply crenate-dentate, revolute, apex obtuse to rounded, surfaces glabrate, slightly scabrous, puberulent, and/or sparsely hispidulous with rays planar, almost lepidote, at times moderately dense finely pubescent, trichome rays 0.1–0.5 mm, densely subsessile-glandular, costal vein thick. Inflorescences subsessile glomerules on ultimate 5–7(–12) nodes; peduncle 1 × 0.8 mm; glomerules compact, 0.4–0.9 × 0.5–1.2 cm, 6–12-flowered, composed of terminal flower subtended by accessory shoots with simple elongate cincinnate dichasia; bracteoles free, bracts subequal, narrowly elliptic, lanceolate, or linear, exterior lanceolate, interior linear, wider bracts 0.4–1.4 mm wide, apex acute, entire distally. Flowers sessile; calyx 2–4.8 mm, hirsutulous and hirsute, tube 1.7–2.5 mm, lobes 1–2 mm; petals bright yellow-orange, oblanceolate, obovate, or oblong, 2.5–4.8 × 0.7–1.3 mm, abaxially glabrous, adaxially subglabrous, densely papillose, with a few pilulose hairs, margins glabrous or very minutely stellate-puberulent, claw adherent for 0.3–0.7 mm to stamen tube base; stamens 1.8–3.1 mm, uneven, tube at apex incised, arcuate, or truncate, yellow-papillose; anthers 0.6–1 mm, base sagittate, ovate-dehisced; pistil 2.6–3.5 mm; ovary sericeous apically; styles 1–1.5 × 0.1–0.2 mm, lateral, densely white-sericeous; stigmas 20–40-branched, penicillate or distended-penicillate, obconic when dried, 0.8–1.4 × 1.2–1.5 mm, column 0.3–0.4 mm, branches 0.6–1 mm. Capsules obconic, transverse-truncate at apex, 1.7–2.4 × 1.5–1.7 mm, with dense white puberulent line at apical valve margin; walls with endocarp corneous 1.6+ mm from apex, sometimes thin at base and along valve margins; dehiscence usually 2-valvate, valve halves completely separate. Seeds dull black, obovoid, 1.8–2.2 × 1.1–1.5 × 1.1 mm, apex with finely keeled linear low brown ridge, surface generally smooth but slightly pusticulate.
Home