See Also: protonema(medicine)
protonema(dictionary)

protonema (iou)



protonema noun. . M19.
[from PROTO- + Greek nema thread.]
Botany. A primitive structure in bryophytes which arises from the germination of a spore and from which the mature plant develops, in mosses usu. consisting of branched green filaments.
protonemal adjective L19.
protonematal adjective E20.