In this article we will discuss about the classification of bryopsida. In such a vast group, naturally, there are many variations so that classification is difficult. Structures of both gametophytes and sporophytes have to be considered and in mosses these two phases have attained specialisation in different degrees in the different species. Thus, it is not possible to arrive at [...]
The following points highlight the two orders under which confieropsida has been classified. The orders are:- 1. Ginkgoales 2. Czekanowskilaes. Order # 1. Ginkgoales: The Ginkgoales are included within the Coniferopsida because of its coniferous type tree, wood and gametophytes. But, its distinctiveness has given rise to the argument as to whether it should better be placed in a separate [...]
In this article we will discuss about the classification of psilophytopsida. The Psilophytopsida comprise of the fossilised ancient Silurian-Devonian order Psilophytales. The discovery of the different genera from such wide places as Canada, Scotland, Europe and Australia shows that these plants were of world-wide distribution in those days. The Psilophytopsida and the living Psilotopsida have been included within a single [...]