In this article we will discuss about:- 1. History of Sphenophylum 2. Anatomy of Sphenophylum 3. Reproduction 4. Phylogeny. History of Sphenophylum: Sphenophyllales represent a small and compact group of sphenopsida. They have left no surviving representatives. The geological history of Sphenophyllales dates back to a time earlier than carboniferous period. Some of the genera like Sphenophyllum appeared during Devonian [...]
After reading this article we will learn about:- 1. Occurrence and Distribution of Salvinia 2. Sporophyte of Salvinia 3. Gametophyte 4. Phylogeny. Occurrence and Distribution of Salvinia: The genus Salvinia has 12 species most of which are found to be distributed in the African continent. The genus is represented in India by two species namely S. natans and S. auriculata. [...]
In this article we will discuss about:- 1. Occurrence and Distribution of Selaginella 2. Sporophyte of Selaginella 3. Gametophyte 4. Phylogeny. Occurrence and Distribution of Selaginella: Selaginella is commonly called the spike moss. It includes over seven hundred species and reported practically from all parts of the world. Majority of the species occur in tropical rain forests and form a [...]