A revision of the genus Malus Mill. (Rosaceae) Author Liu, Jian-quan liujq@lzu.edu.cn Author Gao, Xin-fen Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization and Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China. School of Life Science, Sichuan University, Chengdu 610065, Sichuan, China. University of Chinese Academy of Sciences, Beijing 100049, China. xfgao@cib.ac.cn text European Journal of Taxonomy 2022 2022-12-28 853 1 127 http://dx.doi.org/10.5852/ejt.2022.853.2019 journal article 222443 10.5852/ejt.2022.853.2019 aedbf741-3844-4f1b-9c45-5504394416a9 2118-9773 7501371 1b . Malus baccata var. gracilis (Rehder) T.C.Ku Figs 7–8 Flora of China 9: 181 (Ku & Spongberg 2003). Malus baccata f. gracilis Rehder , Journal of the Arnold Arboretum 2 (1): 49 ( Rehder 1920 ) . – Type : CHINA • Shaanxi , Yenan Fu ; 14 May 1919 ; fl; Purdom 327 ; type : A [ A00026586 ] ! Examined specimens CHINA – Gansu • Heshui ; 21 Jul. 1954 ; fr; Yellow River Investigation Team 163 ; PE [ PE00927499 ] • Pingliang ; 8Aug. 1956 ; fr; Yellow River Investigation Team 2051 ; PE [ PE00927502 ] • Yen Kwan ; s.d.; fr; Fenzel & Pai 2826 ; PE . – Qinghai • Xining ; 8 May 1990 ; fl; Z.H. Zhang et al. 5559 ; HNWP [ HNWP160546 ] . – Shaanxi • Ganquan Laoshan ; 10 May 1953 ; fl; Y.W. Cui 10001 ; PE [ PE00927495 ] • ibid.; 23 May 1953 ; fl; Y.W. Cui 10077 ; PE • Meixian ; 15 Oct. 1953 ; fr; Y.W. Cui 10937 ; PE . Description Small tree, 4‒6 m high; branches terete, pendulous. Pedicel ca 3 cm long. Petals ca 1.0 × 0.6 cm , white, obovate. Styles 3 or 4. Pome ca 0.7 × 0.8 cm . Distribution China ( Gansu , Qinghai , Shaanxi ) ( Fig. 7 ). Chromosome number 2n = 34.