The tetrasporophyte wrapped by callose is of simultaneous type.

四分体呈四面体型，被胼胝质壁所包围。

Ubisch bodies and lipid bodies are found in the glandular tapetums. In meiosis of microsporocyte, cytokinesisis is a simultaneous type, which produces an isobilateral tetrad.

小孢子母细胞减数分裂胞质分裂为同时型,产生正四面体型四分体。