fern spores seeds under the leaf

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Spores of bird s nest fern leaf Royalty Free Stock Photo

Birds Nest Fern Royalty Free Stock Photo

Ferns are reproduced from spores that are gathered in clusters called sori, which are usually on the underside of the fronds. The spores can be yellow, green, brown, or black. The sori are sometimes covered with a membrane called an indusium, which will lift up when the spores are ripe.