Overview

Distribution

C and N Xinjiang [Russia (SE European part, Siberia)].
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Physical Description

Morphology

Description

Trees medium-sized, 3–6 m tall, unarmed, rarely with few 2–4 cm thorns. Branchlets purplish brown or reddish brown when young, grayish brown when old, terete, stout, glabrous; buds purplish brown, suborbicular, glabrous, apex acute. Stipules falcate or cordate, ca. 1 cm, herbaceous, glabrous, margin glandular serrate, apex acute; petiole 2–3.4 cm, glabrous; leaf blade broadly ovate or triangular-ovate, 5–9 × 4–7 cm, veins conspicuous, lateral veins extending to apices of lobes, abaxially barbate in vein axils, adaxially sparsely pubescent, base truncate or broadly cuneate, rarely subcordate, margin irregularly and sharply serrate, usually with 2–4 pairs of lobes, often parted near base, apex acute or obtuse. Compound corymb 3–4 cm in diam., many flowered; peduncle glabrous; bracts caducous, lanceolate, membranous. Pedicel 5–7 mm, glabrous. Flowers 1.2–1.5 cm in diam. Hypanthium campanulate, abaxially glabrous. Sepals triangular-ovate, or triangular-lanceolate, 2–4 mm, both surfaces glabrous, apex caudate-acuminate. Petals white, suborbicular, ca. 5 mm in diam. Stamens 20. Ovary sparsely pubescent apically, 4- or 5-loculed, with 2 ovules per locule; styles 4 or 5. Pome yellow, subglobose, 8–10 mm in diam., glabrous; sepals persistent, reflexed; pyrenes 4 or 5, with concave scars on both inner sides. Fl. May–Jun, fr. Aug–Sep. 2n = 68*.
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Diagnostic Description

Synonym

Crataegus purpurea var. altaica Loudon, Arb. Brit. 2: 825. 1838; C. sanguinea Pallas var. incisa Regel; C. sanguinea var. inermis Karelin & Kirilov; C. wattiana Hemsley & Lace var. incisa (Regel) C. K. Schneider.
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Ecology

Habitat

Slopes, forest understories, stream sides; 400--1900 m.
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Wikipedia

Crataegus altaica

Crataegus altaica is a species of hawthorn. It is considered[1] to be a synonym of C. wattiana. Crataegus altaica var. villosa is considered to be a synonym of Crataegus maximowiczii.

See also[edit]

References and external links[edit]

  1. ^ USDA Plants Profile
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