Crataegus kansuensis E. H. Wilson

Shrubs or small trees, 2.5–8 m tall, usually thorny; thorns many, ca. 0.7–1.5 cm. Branchlets greenish red, terete, slender, glabrous; buds purplish brown, suborbicular, glabrous. Stipules caducous, ovate-lanceolate, ca. 8 mm, membranous, subglabrous, margin glandular serrate, apex acute-acuminate; petiole 1.8–2.5 cm, glabrous; leaf blade broadly ovate, 4–6 × 3–4 cm, abaxially pubescent along veins and barbate in vein axils, later subglabrescent, adaxially sparsely pubescent, base truncate or broadly cuneate, margin sharply and doubly serrate, with 5–7 pairs of shallow lobes; lobes triangular-ovate, apex acute. Cormyb 3–4 cm in diam., 8–18-flowered: peduncle glabrous; bracts caducous, lanceolate, membranous. Pedicel 5–6 mm, glabrous. Flowers 8–10 mm in diam. Hypanthium campanulate, abaxially glabrous. Sepals triangular, 2–3 mm, both surfaces glabrous. Petals white, suborbicular, 5–6 × 3–4 mm. Stamens 15–20. Ovary tomentose apically, 2- or 3-loculed, with 2 ovules per locule; styles 2 or 3. Pome red or orangish yellow, subglobose, 8–10 mm in diam., glabrous; sepals persistent; pyrenes 2 or 3, with concave scars on both inner lateral sides. Fl. May, Jul–Sep. 2n = 34*.

Gansu, Guizhou, Hebei, Shaanxi, Shanxi, Sichuan.

Mixed forests, shaded slopes, stream sides; 1000--3000 m.

Crataegus kansuensis, the Gansu hawthorn (Chinese: 甘肃山楂), is a species of hawthorn found in China. They are shrubs or small trees, often very thorny. They prefer to grow in mixed forests, on shaded slopes and alongside streams, 1,000 to 3,000 m above sea level.

Crataegus kansuensis là loài thực vật có hoa trong họ Hoa hồng. Loài này được E.H. Wilson mô tả khoa học đầu tiên năm 1928.

甘肃山楂（学名：Crataegus kansuensis）是蔷薇科山楂属的植物，为中国的特有植物。分布在中国大陆的山西、四川、陕西、甘肃、河北、贵州等地，生长于海拔1,000米至3,000米的地区，常生于杂木林中、山坡阴处及山沟旁，目前尚未由人工引种栽培。