Monocot genera

Acorus is a genus of monocot flowering plants. This genus was once placed within the family Araceae (aroids), but more recent classifications place it in its own family Acoraceae and order Acorales, of which it is the sole genus of the oldest surviving line of monocots. Some older studies indicated that it was placed in a lineage (the order Alismatales), that also includes aroids (Araceae), Tofieldiaceae, and several families of aquatic monocots (e.g., Alismataceae, Posidoniaceae). However, modern phylogenetic studies demonstrate that Acorus is sister to all other monocots. Common names includ

Petrosavia is a genus in the family Petrosaviaceae. It includes three mycoheterotrophic species from eastern and southeastern Asia. Petrosavia amamiensis Hir.Takah., T.Yukawa & M.Maki Petrosavia sakuraii (Makino) J.J.Sm. ex Steenis (syn P. miyoshia-sakuraii) - Japan (Mino Province), China (Guangxi, Sichuan, Taiwan), Vietnam, Myanmar, Sumatra Petrosavia sinii (K.Krause) Gagnep. in H.Lecomte - Guangxi Province of China Petrosavia stellaris Becc. - Borneo, Sulawesi, Sumatra, Peninsular Malaysia