Rhaphiolepis integerrima var. mertensii (Siebold & Zuccarini) Makino ex Koidzumi; R. mertensii Siebold & Zuccarini; R. umbellata (Thunberg) Makino var. mertensii (Siebold & Zuccarini) Makino; R. umbellata var. integerrima (Hooker & Arnott) Masamune.

Shrubs or small trees. Branches erect or ascending. Leaves clustered at apices of branches; stipules not seen; petiole short or nearly absent; leaf blade oblong or oblong-obovate, 4–7 × 2–3.5 cm, leathery, base cuneate, margin entire, revolute, apex obtuse. Panicle terminal; peduncle and pedicels brown tomentose, bracts caducous. Hypanthium campanulate, abaxially tomentose. Sepals narrowly elliptic, 2.5–3 mm, abaxially pubescent. Petals obovate, ca. 1 cm × 5 mm. Stamens 20; filaments irregular. Ovary 2-loculed, with 2 ovules per locule; styles 2, slender, connate at base, glabrous, not exceeding stamens. Fruit globose, ca. 8 mm, fruiting pedicel thick. Fl. Apr–May, fr. Nov.

Taiwan (Hong Yu, Huoshao Dao, Jilong Shi) [Japan (Ryukyu Islands)].