images of plants, in nature or specimens, of family Hydrocharitaceae. Included is genus Najas, which is sometimes elevated to family status (Najadaceae). Najas spp. are difficult for a nonspecialist to distinguish from each other and from Lagarosiphon. Ottelia is easily recognized.
images of plants, in nature or specimens, of plants of the family Hernandiaceae. Genus Gyrocarpus, the only one present in the zone, is sometimes placed in its own family Gyrocarpaceae.
images of plants, in nature or specimens, of family Fabaceae, subfamily Faboideae, genera T to Z. Vigna unguiculata is cultivated cowpea (the local "beans"). Vigna subterranea (ex Vouandzeia) is cultivated groundnut (resembles peanut but harder).