In this article we will discuss about the classification of pteridophyta. i. Eusporangiate type, in which the sporangium develops from a group of superficial initials, e.g., Selaginella, Equisetum. ii. Leptosporangiate type, in which the sporangium develops from a single initial, e.g., Marsilea. a. Spores develop into a multicellular, gametophytic body called prothallus. b. Two sex […]
Classification of Pteridophyta | Botany
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Classification of Pteridophyta: 4 Classes | Botany
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In this article we will discuss about the classification of pteridophyta. 1. Class: Psilotopsida: The members of the class Psilotopsida show close resemblance in fundamental characteristics to the Silurian and Devonian members of Rhyniopsida (e.g., Rhynia, Cooksonia), Zostero- phyllopsida (e.g., Zosterophyllum) and Trimero- phytopsida (e.g., Trimerophyton, Psilophyton). Psilotopsida includes only two living genera viz., Psilotum […]
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