Malus tschonoskii (Maxim.) C.K.Schneid.

Li, Jing-chao, Liu, Jian-quan & Gao, Xin-fen, 2022, A revision of the genus Malus Mill. (Rosaceae), European Journal of Taxonomy 853, pp. 1-127 : 56-58

14. Malus tschonoskii (Maxim.) C.K.Schneid.

Figs 35–36

Repertorium Novarum Specierum Regni Vegetabilis 3: 179 ( Schneider 1906a).

Pyrus tschonoskii Maxim. , Bulletin de l’Académie impériale des Sciences de Saint-Pétersbourg 19: 169 ( Maximowicz 1874). – Pyrus tschonoskii β hoggii (= Pyrus hoggii ) Franch. & Sav., Enumeratio plantarum japonicarum Vol. 2: 349 ( Franchet & Savatier 1878). – Eriolobus tschonoskii Rehder, Trees & Shrubs Vol. 2 (1): 73, tab. 37 ( Rehder 1903b). – Cormus tschonoskii Koidz. , Botanical Magazine (Tokyo) 23 (272): 171 ( Koidzumi 1909). – Macromeles tschonoskii Koidz. , Florae Symbolae Orientali-Asiaticae: 53 ( Koidzumi 1930). – Docyniopsis tschonoskii (Maxim.) Koidz., Acta Phytotaxonomica et Geobotanica 3 (3): 162 ( Koidzumi 1934a).

– Type: JAPAN • Honshu, Kyoto, near Ebidani, Hiyoshicho , Funaigun ; alt. 400 m; 3 May 1963; fl; G. Murata 18042; lectotype: LE, designated by Langenfeld 1991: 126 ; isolectotype: P [ P03240535 ]!

Examined specimens

JAPAN – Honshu • Kanagawa; 12 Aug. 1967; fr; Miyoshi Furuse 45632; KUN, PE • ibid.; 4 May 1927; fl; T. Sawada s.n.; PE • ibid.; s.d.; st; Savatier 3425; P • Kyoto; 12 Sep. 1949; fr; Miyoshi Furuse 21572; PE • ibid.; 3 May 1963; fr; G. Murata 18042; P, PE • Settsu ; 18 Jun. 1961; fr; G. Murata 14068; PE • Saitama; 3 Jun. 1949; st; Miyoshi Furuse 20634; PE • Shinano ; 3 May 1960; fl; Miyoshi Furuse 36737; PE • Shiga; 2 Oct. 1983; st; Miyoshi Furuse 52215; PE • Miyagi; 5 May 1987; fl; H. Hoshi et al. 2240; HIMC • North of Japan ; 1866–1874; fl; Savatier 3709; P .

UNITED STATES – Massachusetts • Boston ; 5 May 1981; fl; S. Davis et al. 81-299; PE • ibid.; 5 Sep. 1979; fr; K. Clausen et al. 79-77; PE .

Description

Tree, 10‒15 m high. Branches terete, pubescent when young, glabrescent. Leaves petiolate, petiole ca 2.6‒3.0 cm long, densely lanuginous. Lamina 5.7‒8.7 × 3.6‒6.7 cm, oval to ovate, base rounded or cordate, equilateral, apex acuminate or acute, margin crenate to serrulate, blade densely pubescent on midvein and young leaf, occasionally lobed. Inflorescence corymbose, with 2‒5 flowers. Pedicel ca 1.9 cm long, densely lanuginous. Hypanthium densely lanuginous. Sepals triangular, puberulous, persistent. Petals ca 1.2 × 0.7 cm, white, obovate. Stamens 20‒30, unequal. Styles 5, as long as or shorter than stamens, basally puberulous. Pome ca 1.8‒2.1 cm in diameter, subglobose, yellow to red. Carpopodium ca 2.7 cm long, lanuginous.

Phenology

Flowers from April to May. Mature fruits from October to November.

Habitat

Terrestrial, seasonally green, growing in foothill forests; sea level to 1000 m a.s.l.

Distribution

Japan ( Fig. 35 ).

Chromosome number

2n = 34.

Figures

Fig. 35. Distribution of Malus tschonoskii (Maxim.) C.K.Schneid.

Fig. 36. Morphological characters ofMalus tschonoskii (Maxim.) C.K.Schneid.; QIN05066, P03240531, P03240532, P03240533, P03240534, P03240535 (isolectotype), KUN0662716, KUN0760817, KUN0867804. Scale bars = 10 mm.