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Genus :


Family :



Herbs, shrubs or small trees. Leaves simple, alternate or spirally arranged, petiolate, papery or subleathery, entire, glabrous or pilose. Flowers bisexual, zygomorphic, bracts 1-3, bracteoles 2. Sepals 5, usually free, unequal, 2 inner often petaloid. Petals 3, upper 2 basally adnate to staminal tube, lower one boat-shaped, clawed. Stamens 8, filaments united at base forming staminal sheath, anthers basifixed. Capsules compressed, often winged. Seeds 2, oblong, usually black, densely or sparsely hairy.

Key to the species

Serial Key Reference
1a. Bracts 3, persistent; capsule orbicular P. alphonsii
1b. Bracts 2, caducous; capsule globose P. chinensis