Mating in Esperogera.. Move through the channel protoplasm material from one male thread to the female thread

1 - appear from each cell protrusion until they connect and a channel between them.
2. The protoplasmic material passes through the channel from one of the two threads (the male thread) to the other thread (the female thread) and is combined to form the ulcer.
3- The nucleus of the ulcers is divided into four nuclei, three vanish and one remains.
4 - then give the flagpole a new thread.