Hypericum frondosum Michx.

Shrubs, erect, forming rounded bush or treelike, (6–)10–30 dm. Stems: internodes 4-lined at first, then 2-lined to terete. Leaf blades usually oblong to lanceolate-oblong, sometimes oblanceolate, 25–65 × 8–22 mm, base articulated, broadly to narrowly cuneate, margins plane or subrecurved, apex apiculate-obtuse to rounded, midrib with 10–16 pairs of branches. Inflorescences 1–3(–7)-flowered from apical node, sometimes with paired single flowers or triads (3-flowered cymules) or 1–3-flowered branches at proximal node. Flowers 24–45 mm diam.; sepals deciduous, not enclosing capsule, (4)5, ovate or oblong to elliptic-spatulate, unequal, 6–14(–20) × 4–10 mm; petals (4–)5, golden yellow to orange-yellow, obovate to oblanceolate, 12–25 mm; stamens deciduous, 250–650; ovary 3-merous. Capsules ovoid-conic to ovoid-rostrate, 12–15 × 6–8 mm. Seeds carinate, 1.5 mm; testa linear-reticulate. 2n = 18.