In this article we will discuss about the sporophyte and the stamen and seed of Calymmatotheca. The Sporophyte of Calymmatotheca: The stem is long and slender with a presumed climbing habit, and bears spirally arranged fern-like leaves. The frond is compound with a gland, and the rachis divides equally. The pinnae are oppositely arranged. The […]
Calymmatotheca: Sporophyta and Stamen | Gymnosperms | Botany
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Cycadofilicales: Features and Classification | Gymnosperms | Botany
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In this article we will discuss about:- 1. Origin of Cycadofilicales 2. Characteristic Features of Cycadofilicales 3. Classification. Origin of Cycadofilicales: The Cycadofilicales or Pteridosperms are popularly known as ‘seed ferns’. They were trees or small plants bearing fern-like foliage. They flourished greatly in the Carboniferous and the period was so very rich in fossil […]
Glossopteridae: Origin and Affinities | Gymnosperms | Botany
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In this article we will discuss about the origin and affinities of glossopteridae. Origin of Glossopteridae: Brongniart, in 1828, established the genus Glossopteris for leaves, believed to be ferns from the Paleozoic and early Triassic of the Southern Hemisphere. These were simple and entire and as the name suggest tongue-shaped or spathulate to ovate or […]