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, [...]
In this article we will discuss about the asexual and sexual modes of reproduction in marchantia with the help of diagrams. Asexual Reproduction in Marchantia: Asexual propagules - gemmae - occur in a gemma-cup (Fig. 2.6A). On the floor of the cup are seen numerous mucilage papillae and many biconvex discoid gemmae (Fig. 2.7E). A gemma (Fig. 2.7F) is borne [...]