Ankistrodesmus falcatus (Corda) Ralfs 1848


Division     Chlorophyta
Class     Chlorophyceae
Order     Sphaeropleales
Family    Selenastraceae
Basionym     Micrasterias falcatus Corda
SynonymStaurastrum falcatum (Corda) Ehrenberg; Closterium falcatum (Corda) Meneghini; Rhaphidium polymorphum var. falcatum (Corda) Rabenhorst; Rhaphidium falcatum (Corda) Cooke; Rhaphidium fasciculatum Kützing; Ankistrodesmus lundbergii Koshikov

    Thallus colonial without sheath, colony fasciculate or group of 2-4-8 or more, rarely solitary. Cell acicular to linearly fusiform with the tapering to acute apices. Cells measure 30-120 µm in length and 2-8 µm in breadth. Chloroplast single, parietal and without pyrenoid.


Ecology

Free floating alga prefers oligotrophic to mesotrophic water bodies.