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Present communication deals with morpho-taxonomic descriptions of four taxa that includes two genera and four species of class Chlorophyceae. These species are Coleochaete scutata Brebisson Coleochaete soluta (Brebisson) Pringsheim, Bulbochaete nordestedtii (Wittrock) Him and Bulbochaete pseudoaerolata Bock and Bock. One of the species B. pseudoaerolata Bock and Bock is a new record for India.

Beckmann rearrangement of (E)‐4‐chromanone oxime, (E)‐5‐oximino‐3,4‐dihydro‐1(2H)‐benzoxepines, and (E)‐5‐oximino‐3,4‐dihydro‐1(2H)‐benzothiepine are catalyzed by InBr3 and AgOTf in refluxing acetonitrile resulting in the formation of pharmaceutically active heterocycles benzoxazepin‐4‐one, 5‐oxo‐benzoxazocines, and 5‐oxo‐benzothiazocine derivative, respectively, in excellent yield. J. Heterocyclic Chem., (2012).

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