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Developmental Morphology Of Calothrix Parietina (Nägeli) Thuret [= Gloeotrichia Echinulata (J.E. Smith) Richter], Kutbul Rahman Khan
Developmental Morphology Of Calothrix Parietina (Nägeli) Thuret [= Gloeotrichia Echinulata (J.E. Smith) Richter], Kutbul Rahman Khan
Graduate Dissertations and Theses
Drouet (1973) on a morphological basis and the present author in his laboratory and field studies on the life gyre (cycle) and developmental morphology have shown that Gloeotrichia echinulata (J.E. Smith) Richter and Calothrix parietina (Nägeli) Thuret are the same species. According to International Code of Botanical Nomenclature (1972), C. parietina takes taxonomic priority.
In this alga, the akinetes (spores) are not the major means of over-wintering. Short hormogones and filaments of the form known as C. parietina are actually the common winter forms.
There is a direct relationship between different temperatures (10, 15, 21° C) and the frequency of …