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Sphenophylum: History and Phylogeny | Botany

In this article we will discuss about:- 1. History of Sphenophylum 2. Anatomy of Sphenophylum 3. Reproduction 4. Phylogeny. History of Sphenophylum: Sphenophyllales represent a small and compact group of sphenopsida. They have left no surviving representatives. The geological history of Sphenophyllales dates back to a time earlier than carboniferous period. Some of the genera like Sphenophyllum appeared during Devonian [...]

By |2016-12-22T15:52:55+00:00December 22, 2016|Pteridophytes|Comments Off on Sphenophylum: History and Phylogeny | Botany

Salvinia: Occurrence and Gametophyte | Botany

After reading this article we will learn about:- 1. Occurrence and Distribution of Salvinia 2. Sporophyte of Salvinia 3. Gametophyte 4. Phylogeny. Occurrence and Distribution of Salvinia: The genus Salvinia has 12 species most of which are found to be distributed in the African continent. The genus is represented in India by two species namely S. natans and S. auriculata. [...]

By |2016-12-22T15:52:55+00:00December 22, 2016|Pteridophytes|Comments Off on Salvinia: Occurrence and Gametophyte | Botany

Pteris: Distribution and Gametophyte | Botany

Occurrence and Distribution: This is a cosmopolitan fern being distributed in almost all geographical regions. Pteris however, prefers tropical and sub-tropical climates. Plants usually grow in well drained places or in the crevices of rocks. They are very common along the slopes of hills and can be seen even at 1200 metres above sea level. There are about 250-280 species [...]

By |2016-12-22T15:52:54+00:00December 22, 2016|Pteridophytes|Comments Off on Pteris: Distribution and Gametophyte | Botany
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