Abstract

I.yen.gar.iel' la . M.L. fem. n. Iyengariella Iyengar, named after M.O.P. Iyengar, Indian phycologist. Cyanobacteria / Subsection V / Incertae Sedis / Form‐Iyengariella Besides true and pseudodichotomous branchings, false branchings are also found; false branches occur after trichome breakage as a result of the formation of a necridium. True dichotomous branches originate from the longitudinal division of the apical cell and pseudodichotomous true branches originate from the oblique division of an intercalary cell. Filaments taper, the trichomes ending in long whips of the rivulariacean type. Heterocysts and akinetes are absent. Reproduction is through hormogonia‐ formation.

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