Botany lecture notes

Polysiphonia: Thallus Structure, Reproduction, Post Fertilization Changes and Life Cycle


Polysiphonia Post Fertilization Changes

Polysiphonia
(Thallus Structure, Reproduction, Post Fertilization Changes and Life Cycle)

Polysiphonia- Systematic Position

Division: Rhodophyta
Class: Rhodophyceae
Order: Ceramiales
Family: Ceramiaceae

Distribution of Polysiphonia

Ø  Polysiphonia is marine red algae belongs to the class Rhodophyceae.

Ø  They are abundantly present in the Atlantic Coasts of America.

Ø  Polysiphonia platycarpa is present in the Indian coastal regions.

Ø  Polysiphonia violacea is an epiphytic alga grown on some brown algae such as Fucus vesiculosus.

Ø  Some species of Polysiphonia are parasitic (example: Polysiphonia fastigiata).

Thallus Structure of Polysiphonia

Ø  As the name suggests, the thallus of Polysiphonia is siphonous with many interconnected filaments (siphons).

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