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Deciduous trees or shrubs, often spiny below when young and on strong vegetative shoots; stems ascending to spreading; young shoots sometimes hairy. Lvs distributed along long shoots or clustered on short shoots, usually simple, serrate or entire, rarely lobed; stipules deciduous, confined to long shoots. Infl. an umbel-like cluster. Fls 5-merous, ☿, pedicellate, white or rarely pinkish, medium-sized. Hypanthium tubular, closed at apex. Epicalyx 0. Calyx 5-merous; sepals reflexed or spreading, deciduous or persistent. Petals 5, often suborbicular, spreading. Stamens 20-30. Ovary inferior; carpels 2-5; styles 2-5, free, closely constricted at base by disc; ovules 2 in each locule. Fr. a pyriform, turbinate or globose, fleshy pome containing abundant stone cells; skin usually brown, yellow or green, sometimes with paler dots; carpel walls papery; seeds several, dark brown or black.
Trees or shrubs, deciduous, rarely semievergreen, sometimes armed. Leaves alternate, simple, petiolate, stipulate, involute in bud, venation camptodromous, margin serrate or entire, rarely lobed. Inflorescences corymbose-racemose. Flowers precocious or synantherous. Hypanthium cupular. Sepals 5, reflexed or spreading. Petals 5, white, rarely pink, clawed. Stamens 15–30; anthers usually dark red or purple. Ovary inferior, 2–5-loculed, with 2 ovules per locule; styles 2–5, free. Pome with juicy pulp, rich in stone cells, 2–5-celled, with cartilaginous endocarp (core), with persistent or caducous sepals; seeds black or blackish brown, seed coat cartilaginous; cotyledons plano-convex.
Trees or shrubs, unarmed or with thorns, deciduous. Leaves simple. Flowers in few-flowered, simple racemes. Hypanthium with a free rim above the ovary, the rim persistent or falling with the sepals. Ovary inferior, carpels completely adnate with the hypanthium at base connate with each other, 5-celled, styles free. Fruit a pome, mesocarp fleshy and with stone cells, endocarp cartilaginous.
