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Family :

ROSACEAE

Division :

Angiosperm

Genus of this Family

Description


Herbs, shrubs, sarmentose or climbing or trees. Leaves simple or compound, alternate, rarely opposite, stipules 2, free or adnate to petioles, rarely obsolete. Flowers bisexual, disk lining  calyx tube or forming a ring at its base. Calyx tube free or adnate to the ovary, limb 5-lobed. Petals 5, inserted under disc margin. Stamens numerous (rarely 1 or 5 or 10) in one or many series, filaments incurved in bud. Carpels 1 or more, free or connate with free or connate styles, styles basal, lateral or subterminal, stigmas capitate or penicillate, ovules 1 or more in each carpel. Fruits achenes or berries or drupes, rarely capsular. Seeds erect or pendulous.

Key to the Genus

Serial Key Reference
1a. Ovary superior; ripe carpels not enclosed in calyx tube 2
1b. Ovary inferior; ripe carpels enclosed in calyx tube 3
2a. Carpel solitary; unarmed tree Prunus
2b. Carpels many; armed shrubs. Ripe carpels fleshy, ovules 2, pendulous Rubus
3a. Armed shrubs with compound leaves and large adnate stipules; carpels many,not confluent when ripe Rosa
3b. Unarmed trees with simple leaves and small stipules; carpels few confluent when ripe. Flowers panicled Eriobotrya