Is cowpea C3 or C4

Cowpea (Vigna unguiculata) is a C3 plant, which means it primarily uses the C3 carbon fixation pathway for photosynthesis. This pathway is typical for many legumes and plants that thrive in cooler, wetter environments. C3 plants tend to have lower water-use efficiency compared to C4 plants, which are adapted to hotter, drier conditions.