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Chinese apple, pear-leaf crab apple, plum-leaf crabapple

Habit Trees, 30–80(–100) dm. Shrubs or trees, sometimes subshrubs or herbs.
Stems

5–20 cm diam.;

bark purplish brown or gray-brown, peeling irregularly;

young branches purplish brown and densely puberulous, becoming grayish purple or grayish brown and glabrous at maturity; flowering shoots producing spurs, (5–)10–20(–35) mm.

Buds

purplish brown, ovoid, 5–7 mm, scale margins sparsely pubescent.

Leaves

convolute in bud;

isomorphic;

stipules deciduous, lanceolate, 4–5 mm, apex acuminate;

petiole 10–50 mm, tomentose;

blade elliptic or ovate, (3.5–)5–9.5(–11) × (2–)4–5(–8) cm, base broadly cuneate, margins unlobed, acutely serrate or serrulate, sometimes doubly serrate, apex acuminate or acute, sometimes cuspidate, abaxial surface glabrous, adaxial puberulent or subglabrous.

alternate, sometimes opposite, simple, sometimes pinnately compound;

stipules present or absent.

Panicles

umbel-like;

peduncles 0–2 mm;

bracteoles deciduous, rare, ± middle of pedicel, filiform, 3–4 mm.

Pedicels

20–35 mm, puberulous.

Flowers

(30–)40–50 mm diam.;

hypanthium puberulent;

sepals triangular-lanceolate or lanceolate, 7–9 mm, longer than tube, apex acuminate, surfaces puberulent;

petals white, obovate or elliptic, 25–30 mm, claws 1–2 mm, margins entire, apex rounded;

stamens ca. 20, 8–10 mm, anthers yellow before dehiscence;

styles 4 or 5, basally connate 1/3 length, 9–11 mm, longer than stamens, proximally tomentose.

torus absent or minute;

carpels 1–5(–8), distinct or +/- connate (Maleae), free or +/- adnate to hypanthium (many Maleae), styles distinct or +/- connate (some Maleae);

ovules (1 or)2(–5+), collateral, clustered, or biseriate.

Fruits

follicles aggregated or not, capsules, drupes aggregated or not, aggregated drupelets, pomes, or aggregated nutlets, rarely achenes or aggregated achenes;

styles persistent or deciduous, not elongate (elongate in Gillenieae).

Pomes

yellow to dark red, ovoid or oblong, 20–25(–34) mm diam., cores enclosed at apex;

sepals persistent, reflexed (erect), raised, swollen at base;

sclereids sparse surrounding core.

Seeds

dark brown.

x

= 8, 9, 15, 17.

2n

= 34, 51.

Malus prunifolia

Rosaceae subfam. amygdaloideae

Phenology Flowering Apr–Jun; fruiting Aug–Oct.
Habitat Hillsides, flats
Elevation 0–1300 m (0–4300 ft)
Distribution
from FNA
CT; DC; IL; MA; ME; MN; NH; NY; PA; RI; SC; TN; VA; VT; WA; WI; NB; NS; ne Asia [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
HI; North America; Mexico; Central America; South America; Europe; Asia; Africa; Atlantic Islands (Madeira); Australia
Discussion

Malus prunifolia is closely related to the cultivated apple, M. pumila, and sometimes is used as rootstock for the latter because of its extensive root system. Malus prunifolia differs from M. pumila in having more sharply serrate leaves, glabrate or glabrous abaxial surfaces of mature leaves, relatively long pedicels, and pomes with raised, swollen, fleshy-based sepals.

Malus prunifolia is cultivated worldwide and utilized as grafting rootstock, as a fruit tree, and as an ornamental. The species is potentially a genetic source of cold tolerance and disease resistance for apple-breeding programs. See discussion under 4. M. fusca for distinguishing M. prunifolia from the hybrid M. ×dawsoniana.

Malus ×scheideckeri Späth ex Zabel is considered a hybrid of M. floribunda and M. prunifolia (see discussion of the latter under 8. M. halliana). The 'Scheidecker crabapple' is cultivated as an ornamental tree for its semidouble pale pink flowers and yellow to orange globose pomes.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Cyanogenic glycosides are usually present in Amygdaloideae; sorbitol is present.

The name Amygdaloideae Arnott (1832) has priority over Spiraeoideae Arnott (1832), used by D. Potter et al. (2007), because Amygdalaceae (1820) is an earlier conserved name.

Tribes 9, genera 55, species ca. 1300 (9 tribes, 38 genera, 361 species, including 20 hybrids, in the flora)

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 9, p. 477. FNA vol. 9, p. 345. Author: Luc Brouillet.
Parent taxa Rosaceae > subfam. Amygdaloideae > tribe Maleae > Malus Rosaceae
Sibling taxa
M. angustifolia, M. baccata, M. coronaria, M. fusca, M. halliana, M. hupehensis, M. ioensis, M. pumila, M. toringo
Subordinate taxa
Synonyms Pyrus prunifolia
Name authority (Willdenow) Borkhausen: Theor. Prakt. Handb. Forstbot. 2: 1278. (1803) Arnott: Botany, 107. (1832)
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