Subshrubs. Stems <from branched caudex and horizontal rootstocks>, ascending to erect, 10–60(–80) cm, stellate-pubescent, glabrescent. Leaves cauline; petiole 0–2 mm; blade oblanceolate, 10–25(–35) × 2–8(–14) mm, <base cuneate, margins nonrevolute, apex subacute>, surfaces stellate-tomentose, without simple hairs, lateral veins obscure or raised abaxially. Inflorescences terminal and axillary, glomerules and panicles; chasmogamous flowers 1–2 per panicle, <overtopping cleistogamous>, cleistogamous 2–10 per glomerule, <produced simultaneously with chasmogamous>. Pedicels 10–20 mm; bracts 2–5 × 0.2–0.8 mm. Chasmogamous flowers: outer sepals linear, 1–4 × 0.3 mm, inner sepals 3–7 × 1.8–3.2 mm, apex acute to acuminate; petals obovate, 4–9 × 3.5–6 mm; capsules 3.5–4.5 × 2–3 mm, glabrous. Cleistogamous flowers: outer sepals linear, 1–3 × 0.2–0.4 mm, inner sepals ovate or ovate-lanceolate, 2.4–5 × 1.2–3.6 mm, apex acute or acuminate; capsules 1.6–3.6 × 1.2–2.5 mm, glabrous.
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