Polyspora duykhanhii (Theaceae) – A new species from Vietnam

Polyspora duykhanhii (Theaceae) is described as a new species from Vietnam, Khanh Hoa Province, Hon Ba Nature Reserve. This new species has leaves narrowly oblong to oblanceolate; flowers 2.4–3.5 cm in diameter; sepals 5, suborbicular or subglobose, outer surface pubescent; inner surface glabrous; petals 5–7, dark pink to red, outer surface pubescent, inner surface glabrous, apex emarginate; stamens numerous, filaments red, glabrous; ovary superior, ovoid, 4–5 carpellate, densely tomentose; style columnar, yellowish-green, finely hairy at the base; capsule oblong-cylindric, mid brown, shiny, sparsely hairy, woody and hard, 3–5 seeds per locule, columella persistent; seeds together with wing, glabrous. This new species is assessed to be Data Deficient (DD) according to IUCN categories and criteria.