In this article we will discuss about the life cycle of gnetum. The Sporophyte of Gnetum: The plants are mostly lianes (G. ula), which climb or trail over other vegetation, often reaching the tops of the tallest trees. A few species are, however, small trees (G. gnemon, G. costatum) and shrubs. The leaves are simple, […]
Life Cycle of Gnetum | Gnetopsida | Gymnosperms | Botany
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Gnetales: Features and Classification | Gnetopsida | Gymnosperms | Botany
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The ‘Gnetales’ comprise a small group of gymnosperms which have recently appeared on the surface of the globe. This is the reason why no fossil of any member of order has been obtained below the Tertiary. The Gnetales seem to form a connecting link between gymnosperms and angiosperms. Characteristic Features of Gnetales: (a) Vegetative Organs: […]
Life Cycle of Ephedra | Gnetopsida | Gymnosperms | Botany
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The species of Ephedra are found distributed in North as well as in South America, Spain, France, the Mediterranean regions, and India. It is interesting to note that, not a single species has yet been recorded, which is common to both the Hemispheres. According to Hooker, there are three species of Ephedra growing in India: […]