Apocynaceae
Fls perfect, regular, 5-(4)-merous, in bracted racemes or cymes to solitary. Calyx-lobes imbricate; corolla tubular, lobes contorted or imbricate. Stamens inserted on corolla-tube; filaments free; anthers 2-celled, dehiscing lengthwise, quite free to connivent, connective often produced. Disk us. annular. Ovary superior, 1-or 2-loculed; style single. Fr. various, seeds often winged or comose. Trees, shrubs or lianes with us. opp., simple, entire, exstipulate lvs. Subcosmopolitan family of some 300 genera and 1400 spp.
