ABSTRACT:
Seventeen new species of Typhonium (T. adnatum, T. digitatum, T. echinulatum, T. gallowayi, T. gagnepainii, T. glaucum, T. griseum, T. medusae, T. orb! folium, T. pedunculatum, T. pusillum, T. reflexum, T. saraburiensis, T. subglobosum, T. tentaculatum, T. varians and T. bognerianum) are described from Thailand. A key to all Thai Typhonium is presented. Province coding follows the flora of Thailand format.