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cephalodium

A Dictionary of Plant Sciences | 1998 | 273 words | Copyright

cephalodium A specialized region in a lichen thallus in which occur cyanobacteria (blue-green algae) that are capable of carrying out nitrogen fixation. Lichens that have cephalodia have a green phycobiont (i.e. a member of the Chlorophyta) in the remainder of the thallus.

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