Ko e ʻakau matala ʻi he saienisi ʻo e ʻakau ko e taha pē ʻo e vahe ʻo e fanga meʻamoʻui ʻe 5 ʻi he ʻuluʻivahe ko ʻakau tengaʻiʻakau (spermatophytes). Kā ko e vahe ʻiloa taha.