陕西山楂 shaan xi shan zha

Shrubs. Branchlets reddish brown when young, dark brown when old, terete, glabrous; buds and stipules not seen. Petiole 1.5–2.5 cm, glabrous; leaves proximally on branches obovate or suborbicular, distal ones broadly ovate or oblong-ovate, 6–9 × 2.5–7.7 cm, abaxially barbate in axils, adaxially only with few hairs along veins, base cuneate or subrounded, margin irregularly crenate-serrate, with 1 pair of lobes broadly ovate or oblong-ovate, apex acute or acuminate. Compound corymb ca. 4 cm in diam., several flowered; peduncle glabrous; bracts not seen. Pedicel 4.5–11 mm, glabrous. Flowers not seen. Hypanthium campanulate, glabrous. Sepals triangular or lanceolate, adaxially pubescent, after anthesis revolute, margin entire or 2–4-crenulate at apical part, apex acuminate. Petals orbicular or broadly ovate, 5–7 mm. Stamens 20. Ovary pubescent apically, 5-loculed, with 2 ovules per locule; styles 5, pubescent basally. Pome not seen. 2n = 34*.

Shaanxi.

Further study is necessary to document the characters of flowers and fruit.