Hypericum henryi H.Lév. & Vaniot
Hypericum henryi subsp. henryi flower showing the characteristic short stamens. © Landcare Research 2010
Hypericum henryi H.Lév. & Vaniot in Léveillé, Bull. Soc. Bot. France 54: 591 (1907)
Shrub, up to 3.5 m high. Stems upright to spreading, terete, without lines, black glands absent. Leaves 20.0–100.0 mm long, 7.0–30.0 mm wide, ovate, ovate-elliptic or ovate-oblong, glabrous, reticulate tertiary veins absent; pellucid glands present; black glands absent; apex subacute or obtuse, mucronulate; base broadly cuneate, obtuse or rounded; margin entire; petiole 0.5–3.0 mm long. Inflorescence terminal, in panicles, flowers 3–14, corolla 40–70 mm diam., saucer shaped. Pedicels 5.0–32.0 mm long. Bracteoles 7.0–10.5 mm long, 2.5–5.0 mm wide, lanceolate, broadly lanceolate, elliptic or elliptic-lanceolate, apex acute or subacute. Sepals 5, 5.5–10.0 mm long, 4.0–6.5 mm wide, unequal, moderately accrescent, suborbicular, ovate or broadly ovate; pellucid glands present; black glands absent; apex obtuse or rounded; margin finely and irregularly toothed in upper ½. Petals 26.0–32.0 mm long, 18.0–22.0 mm wide, longer than sepals, broadly obovate or suborbicular, golden, black glands absent, caducous after anthesis. Stamens in 5 bundles, 250–350, 7.0–12.0 mm long, ⅓–½ length petals; anthers 0.8–1.5 mm long, anther gland absent. Ovary 6.5–7.0 mm long, 4.0–5.0 mm wide, ovoid. Styles 5, 5.0–6.0 mm long, ¾ to similar length to ovary. Fruit a capsule, 11.0–20.0 mm long, 9.0–11.0 mm wide, ovoid to broadly ovoid, brown. Seeds 1.0–1.6 mm long, 0.4–0.5 mm wide, oblong, terete, dark brown, narrowly winged, longitudinally ridged, apices acute to obtuse.
Distinguished by its taller habit, the stems terete and without lines, leaves with short but distinct petioles, the sepals being obtuse to rounded at the apex and with the margin being irregularly and finely toothed in the upper half, anthers without a conspicuous gland, 5 styles, the stamens less than half the length of the petals, and the seeds narrowly winged.
Occurs in disturbed habitats such as roadside banks and verges among grasses and in second growth on hillsides.
Léveillé, H. 1907: Les Hypericum de la Chine. Bulletin de la Société Botanique de France 54: 587-596.