All parts of the sporophyte blade have the ability to form the sorus, but many tissues at
the tip flow out without reaching maturity in the natural environment.
The
formation of the sorus requires several conditions, one of which is the accumulation of
resources (nutrients).
Therefore,
it was clarified that if the accumulation of resources in the natural
environment does not meet the maturity conditions (resource limitation occurs),
they flow out without reaching maturity.
