Biology 211: Taxonomy of Flowering Plants


Class Magnoliopsida

Subclass Magnoliidae

1. Magnoliaceae - Magnolia; trees and shrubs; leaves alternate, simple, stipulate, the stipules large and enclosing the young buds, falling quickly and leaving a scar at the node; flowers perfect, often large, with many separate sepals, petals (often undifferentiated), stamens, and carpels.

2. Nymphaeaceae - Water lily; perennial aquatic herbs; leaves long-petioled, peltate; flowers large, long-peduncled, floral parts often numerous.

3. Ranunculaceae - Buttercups; mostly herbs; leaves with sheathing leaf bases, blades often divided; flowers mostly perfect with spirally arranged, numerous stamens and carpels.

4. Papaveraceae - Poppy; mostly herbs, sometimes shrubs or trees, often with milky or colored latex; leaves alternate; flowers showy, perfect, calyx of 2-3 distinct, quickly falling sepals, corolla of 4-6 or 8-12 biseriate, crumpled, separate petals; numerous stamens, 2- to several united carpels; fruit a capsule opening by valves or pores.

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