PROTONEMA
the juvenile form of a bryophyte (usually consisting of a branched filamentous structure, but sometimes flat or platelike), developing on the germination of a spore and producing buds from which the adult plants arise.
an analogous thread-like structure in other lower plants; specifically the filamentous form of a developing gametophyte of a fern or charophytic alga.
an analogous thread-like structure in other lower plants; specifically the filamentous form of a developing gametophyte of a fern or charophytic alga.