Archive | Botany

Let us learn about Lyginopteris. After reading this article you will learn about: 1. Systematic Position of Lyginopteris 2. Features of Lyginopteris 3. Reproductive Structure 4. Seed 5. Phylogenetic Relationships. Systematic Position of Lyginopteris: Gymnosperms Class. Cycadopsida Order. Pteridospermales Family. Lyginopteridaceae Genus. Lyginopteris (Calymatotheca) The genus Lyginopteris also known as Lyginodendron. Features of Lyginopteris: 1. Morphological Features: The stem Lyginopteris [...]

Quick Notes on Williamsonia! Williamsonia (Williamsonia sewardiana Sahni): Systematic Position: Gymnosperms Class. Cycadopsida Order. Cycadeoideales Family. Williamsoniaceae Genus. Williamsonia The second type of Cycadeoideales (Bennettitales) is known as Williamsonias cycads. This group of plants was more ancient than Cycadeoidea (Bennettites). The group differs both from Cycadeoidea and cycads in some important features, in the stem anatomy and also in the [...]

Quick Notes on Cordaitales. After reading this article you will learn about: 1. Introduction to Cordaitales 2. Systematic position of Cordaitales 3. Features 4. Reproductive Structures 5. Strobilus 6. The Ovule 7. Affinities. Introduction to Cordaitales: The Cordaitales is another fossil group which lived side by side with the Cycadofilicales in Palaeozoic times. Both the groups were very common, the [...]