Abstract
Poaceae is widely distributed and comprises about 12,000 species in 12 subfamilies. Fusoid cells are originated from the ground meristem and have been reported in leaf blades of many grass species in seven subfamilies: early-diverging lineages Anomochlooideae, Pharoideae, Puelioideae; Oryzoideae, Bambusoideae and Pooideae (BOP clade); and Panicoideae (PACMAD). Grass anatomical studies and…