Petals 4 or 5 [rarely 3 or many, free or forming a calyptra [rarely forming a tube, usually not persistent in fruit, imbricate or valvate in bud. Stamens 4–many, often as many as petals and alternating with them, both inserted around an epigynous disk, usually not persistent. Ovary inferior or semi-inferior [or very rarely superior, surmounted by a secretory disk, commonly 2–5-locular [or 1 to many locular]; 1 ovule per loculus; styles as many as ovary loculi, free or variously fused, persistent.