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 [...]
In this article we will discuss about the process of reproduction in porella with the help of diagrams. Porella (Fig. 2.11 A, B) is dioecious and dimorphic. Male plants are smaller than female plants. The antheridia occur on small lateral branches (Fig. 2.11C) which are almost perpendicular to the main axis. Although the female plants are bigger than male plants, [...]