Herbs erect, with rooting, not creeping, base, <forming clumps>, 1.5–10 dm. Stems: internodes (at least some) 4-lined, with black glands in raised lines. Leaves spreading, sessile; blade ovate, ovate-lanceolate, oblong, or elliptic, 15–50 × 10–20 mm, base cuneate to rounded, margins plane, apex rounded, midrib with 2–3 pairs of branches, <tertiary veins not densely reticulate>, black glands intramarginal (spaced), <pale glands usually sparse or absent>. Inflorescences subcorymbiform to broadly pyramidal or cylindric, to 40-flowered. Flowers 15–25(–30) mm diam.; sepals not imbricate, spreading in fruit, broadly ovate to oblong, unequal to subequal, 4–5 × 2–3.5 mm, apex rounded-apiculate to erose-denticulate; petals golden yellow, obovate-oblong to oblanceolate, 10–15 mm; stamens 30–70; anther gland black; styles 3–4 mm. Capsules broadly ovoid, 7–9 x 5–7 mm, with longitudinal vittae. Seeds scarcely carinate, 1 mm; testa linear-reticulate. 2n = 32.
Home