Abstract

Der.mo.car.pel' la . L. suffix ‐ ella diminutive; M.L. fem. n. Dermocarpella small Dermocarpa . Cyanobacteria / Subsection II / Genera Reproducing by Multiple Fissions Only, or in Combination with Limited (1–3) Binary Fissions / Form‐ Dermocarpella Cyanobacteria that undergo binary fission to form an ovoid aggregate consisting of a large apical cell and from one to three smaller basal cells. The cell aggregate possesses an intrinsic apical‐basal polarity. Multiple fission occurs initially in the apical part of the small cell aggregate, followed by the release of baeocytes that do not possess an outer fibrous layer, and which may exhibit gliding motility. The baeocytes enlarge asymmetrically into ovoid vegetative cells before initiating binary fission. After the initial round of multiple fission, the remaining basal cells enlarge asymmetrically and undergo binary fission to form apical reproductive cells and smaller basal cells; multiple fission is reinitiated in the new apical cells.

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