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22b. Cornus hongkongensis subsp. tonkinensis (W. P. Fang) Q. Y. Xiang, Bull. Bot. Res., Harbin. 7(2): 42. 1987.

东京四照花 dong jing si zhao hua

Dendrobenthamia tonkinensis W. P. Fang, Acta Phytotax. Sin. 2: 103. 1953; Cornus tonkinensis (W. P. Fang) Tardieu; D. brevipedunculata W. P. Fang & Y. T. Hsieh; D. qianxinanica S. S. Chang & X. Chen.

Trees or shrubs, evergreen, 4–15 m tall. Bark dark gray; old branches gray, often with lenticels. Leaf blade oblong-ovate or narrowly elliptic, 4.5–11(–13) × 1.7–5.3(–6) cm, leathery, nearly glabrous, veins 3(or 4). Inflorescences ca. 8 mm in diam., 40–50-flowered; bracts white, broadly elliptic to broadly ovate, 1.6–1.8 × 1.3–1.5 cm, both surfaces slightly pubescent. Calyx nearly glabrous. Petals ca. 2.2 × 0.8–1 mm, glabrous; filaments glabrous; anthers broadly ellipsoid, ca. 0.7 mm. Style ca. 0.5 mm, thick, glabrous. Compound fruit red at maturity, 1.5–2 cm in diam., peduncle (2–)4–7.5 cm. Fl. Jun(–Oct), fr. Dec(–May).

Evergreen broad-leaved forests; 1100–2500 m. SW Guangxi, S Yunnan [N Vietnam].

Some specimens from SW Guizhou have very short (2–4 cm) peduncles that are conspicuously enlarged in the upper part. These specimens have been identified as Dendrobenthamia brevipedunculata. However, the type gathering of this name (collected from the same geographic region) does not show this enlargement of the peduncles. Some specimens from this region and adjacent areas of Guangxi were collected in October and May with both flowers and fruits.


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