Prothallus
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A prothallus, or prothallium, is usually the gametophyte stage in the life of a fern or other pteridophyte. Occasionally, the term is also used to describe the young gametophyte of a liverwort or peat
Prothallus (prothallium) of the fern Polypodium vulgare seen under a light microscope.
Prothallus of the tree fern Dicksonia antarctica (note new moss plants for scale)
Fern
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Ferns are a group of vascular plants that reproduce via spores and have neither seeds nor flowers. They reproduce in two phases, a short-lived gametophyte that reproduces sexually to develop a spore-b
Prothallus
…A prothallus, or prothallium, (from Latin pro = forwards and Greek θαλλος (thallos) = twig) is usually the gametophyte stage in the life of a fern or other pteridophyte. Occasionally, the term is also used to describe the young gametophyte of a liverwort or peat moss as well. In lichens, it refers…
The ferns of Great Britain, and their allies the club mosses, pepperworts, and horsetails
Equisetopsida
Flickr brewbooks Angiopteris evecta Mule's foot fern
WP2 Hymenophyllum Exkursion nach Berdorf 011