大型四照花 da xing si zhao hua

Cornus hongkongensis var. gigantea Handel-Mazzetti, Symb. Sin. 7: 690. 1933; Benthamidia hongkongensis (Hemsley) H. Hara var. gigantea (Handel-Mazzetti) H. Hara; C. gigantea (Handel-Mazzetti) Tardieu; Dendrobenthamia gigantea (Handel-Mazzetti) W. P. Fang; D. gigantea var. caudata W. P. Fang & W. K. Hu; D. pachyphylla W. P. Fang & W. K. Hu.

Shrubs or small trees, evergreen, 2–6 m tall. Old branches gray or grayish green. Leaf blade obovate, rarely broadly elliptic, 8.5–16 × 3.8–7.5 cm, leathery to thickly leathery, abaxially sparsely pubescent with appressed short trichomes when young, glabrous in age, axils of veins without or rarely with clusters of dark brown trichomes, veins often 4, conspicuous, apex caudate-acuminate. Inflorescences 1.4–2 cm in diam., ca. 60-flowered; bracts yellowish or white, broadly obovate or nearly orbicular, ca. 4 × 3–4.2 cm, nearly glabrous. Calyx tube ca. 1.3 mm, often shallowly 4-lobed, rarely 5-lobed, outside pubescent. Petals ovate-lanceolate, ca. 4.2 × 1.1 mm, outside sparsely pubescent. Filaments ca. 4 mm; anthers ovoid-ellipsoid, ca. 1.2 mm. Style ca. 1.5 mm, pubescent with white trichomes. Compound fruit yellowish red at maturity, ca. 2.5 cm in diam.; peduncle 8–9.5 cm. Fl. Apr–May, fr. unknown.

Evergreen broad-leaved forests, sparse forests, valleys; 700–1700 m. W Guizhou, S Sichuan, NE Yunnan [N Vietnam].