26. Malus komarovii (Sarg.) Rehder Figs 59–60 Journal of the Arnold Arboretum 2 (1): 51 (Rehder 1920). Crataegus tenuifolia Kom., Trudy imperatorskago S.-Peterburgskago botanicheskago Sada 18: 435 (Komarov 1901), nom. illeg. – Crataegus komarovii Sarg., Plantae Wilsonianae Vol. 1 (2): 183 (Sargent 1912), nov. nom. of Crataegus tenuifolia Kom .. – Sinomalus tenuifolia (Kom.) Koidz., Acta Phytotaxonomica et Geobotanica 1 (1): 12 (Koidzumi 1932). – Sinomalus komarovii (Sarg.) Honda, Botanical Magazine (Tokyo) 47: 297 (Honda 1933). – Type: NORTH KOREA • valley Segeelu- Korani; 16 Jun. 1897; fl; V. Komarov 869; holotype: LE; isotype: K [K000758431]! Examined specimens CHINA – Jilin • Antu; 29 Aug. 1959; fr; P.Y. Fu 1256; IFP • ibid.; 9 Aug. 1979; fr; S.D. Zhao 2447; IFP • Changbai; 26 May 1976; fl; X.Z. Wang s.n.; PE • ibid.; 3 Jul. 1958; fl; F.M. Luo et al. 662; PE. NORTH KOREA – North Hamgyong • Kilju-gun; 25 Aug. 1942; fr; Nakashima s.n.; NAS • locality unknown; 12 Sep. 1962; st; S.E. Liu & S.X. Li 9191; IFP. Description Small tree or shrub, 3 m high. Branches terete, pubescent when young, glabrescent. Leaves petiolate, petiole ca 1.8‒2.0 cm long, puberulous. Lamina ca 3.9‒4.2 × 2.9‒3.9 cm, ovate, rarely oblong, base cordate or cuneate, equilateral, apex acute or acuminate, margin serrulate, blade puberulous, 3-lobed. Inflorescence corymbose, with 6‒8 flowers. Pedicel ca 1.8 cm long, puberulous. Hypanthium puberulous. Sepals lanceolate, abaxially puberulous or glabrous, adaxially lanuginous, caducous or persistent. Petals white, ovate. Stamens 20‒30, unequal. Styles 4 or 5, glabrous. Pome ca 0.8‒1.0 cm in diameter, subglobose, yellow to red. Carpopodium ca 1.5 cm long, puberulous. Phenology Flowers in May. Mature fruits in September. Habitat Terrestrial, seasonally green, growing in shrubs; 1100‒1300 m a.s.l. Distribution China (Henan, Jilin), North Korea, and South Korea (Fig. 59). Chromosome number 2n = 34.

Published as part of Li, Jing-chao, Liu, Jian-quan & Gao, Xin-fen, 2022, A revision of the genus Malus Mill. (Rosaceae), pp. 1-127 in European Journal of Taxonomy 853 on pages 87-89, DOI: 10.5852/ejt.2022.853.2019, http://zenodo.org/record/7501371