In this article we will discuss about:- 1. Habit and Habitat of Nephrolepis 2. External Features of Nephrolepis 3. Internal Structure 4. Reproduction. Habit and Habitat of Nephrolepis: Nephrolepis (Nephros, kidney; lepis, the indusium kidney-shaped and scale like) is represented by about 30 species. These species are distributed in the tropics of the entire world. About five species [N.cordifolia (Fish [...]
In this article we will discuss about:- 1. Habit and Habitat of Pteridium 2. External Features of Pteridium 3. Internal Structure 4. Reproduction. Habit and Habitat of Pteridium: Pteridium a monotypic genus (represented by a single species P. aquilinum; Reimers, 1954), is one of the oldest known fern (fossil records over 55 million years old have been found). It is [...]
The Pteridophyta, commonly called vascular cryptogams, are represented by more than about 10,000 species, and are characterized by the following peculiarities: 1. Members of this group are most primitive living vascular plants such as Selaginella, Lycopodium, Equisetum etc., and also fossil vascular plants such as Rhynia, Horneophyton, Asteroxylon, etc. 2. Most of the plants prefer to grow in cool and [...]