EditorialSori or sporangia (spore cases) on the underside of a fern frond, Marattia alata, magnified x50. Chromolithograph after an illustration by E.T.D., lithographed by Vincent Brooks, from "Graphic Microscopy" plates to illustrate "Hardwicke's Science Gossi...
EditorialSori or sporangia (spore cases) on the underside of a fern frond, Marattia alata, magnified x50. Chromolithograph after an illustration by E.T.D., lithographed by Vincent Brooks, from "Graphic Microscopy" plates to illustrate "Hardwicke's Science Gossi...