In this article we will discuss about the anatomy of marchantia with the help of a suitable diagram. Internally, in a cross-section (Fig. 2.7A, B) the thallus is made up of two zones; upper assimilatory and lower storage zone. The assimilatory zone is narrow, it is made up of a single layer of air chambers which enclose assimilatory filaments. Each [...]
In this article we will discuss about the sexual and asexual modes of reproduction in riccia with the help of diagrams. Sexual Reproduction in Riccia: Most of the species of Riccia are monoecious. Antheridia and archegonia occur on the same thallus. However, some species (R. curtisii and R. discolor) are dioecious. In R. curtisii two spores of a tetrad develop [...]
In this article we will discuss about the morphology of porella with the help of a suitable diagram. A large and more specialized genus of Jungermanniales, Porella, is distributed all over the world, except Arctic and Antarctic regions. About 34 species have been recorded from India; mainly from Himalayas where it grows luxuriantly. The genus is relatively rare in the [...]