In this article we will discuss about the life cycle of selaginella, explained with the help of suitable diagrams. Selaginella is a very large genus of about 700 tropical to temperate species growing almost everywhere on this Earth. Although so large, the genus shows a uniformity lacking in the genus Lycopodium. The genus is more […]
The Protoleptosporangidae or the Osmundidae comprising of the single order Osmundales with the single family Osmundaceae is taken out of the Leptosporangiates as proposed by Hirmer (1927) as it is not truly leptosporangiate. The Osmundales is a very ancient order represented by Thamnopteris and Zalesskya from late Permian and by Osmundites itself from Jurassic onwards. […]
The following points highlight the four families under which marattidae has been classified. The families are:- 1. Angiopteridaceae 2. Marattiaceae 3. Christenseniaceae 4. Danaeaceae. Family # 1. Angiopteridaceae: Sporangia almost free, arranged in two rows on two sides of vein forming linear sori near margin. Genera: Angiopteris (100 spp. from Polynesia to Madagascar and the […]
Powered by WordPress. Designed by 
