The result indicates that the number of piriform gland spigot and aciniform gland spigot , with or without nubbin and cylindrical gland spigot , the number of cylindrical gland spigots , etc . are different in the three families . the trichobothrial sockets of species are different in the shape of the depression and the number of wrinkles on their surface 各科内属间纺管的区别主要表现为：前侧纺器小穗的有无和梨状腺纺管的数量；后中纺器葡萄状腺纺管的数量，柱状腺纺管的数量，小穗的有无；后侧纺器葡萄状腺纺管的数量及柱状腺纺管的数量。
