Heterocyst division in two blue-green algae

Abstract

The heterocysts of Camptylonema lahorense and Aulosira fertilissima have been observed to undergo division, as distinct from germination, either by the constriction of the heterocyst wall and protoplast or by the formation of a transverse furrow. A two-pored heterocyst divides in this way to form two one-pored heterocysts. © 1975 Springer-Verlag.