saufern

At Right

A sporling attached to a prothallus. This is a Cyathea (treefern) species

The spore has germinated and grows a prothallus
(the first growth, shown in lower part of the plant
in the image) this has the male and female parts.

When fertilization had occurred, this produced a tiny sporeling or fernlet (the second growth) the fern like plant in image, small roots are emerging below.

If possible when pricking out sporelings
take the prothallus as well
as it contains nutrients needed for good early growth