Rissoella verruculosa

Rissoella verruculosa consists of simple or unbranched ribbon-like slings that are often twisted with wavy and denticulated borders. It has slingshots measuring 0.5 to 2cm wide and 5 to 20 cm in length. A stipe connects the slings to a discoid base and attaches them to the rock. The consistency of the seaweed is rubbery, yellow more or less orange or reddish, varies with lighting and moistening. It turns brown when it is long outside the water and returns to its normal initial state when wet. The blades of the seaweed has on both sides small warts on.

The reproductive cycle of Rissoella verruculosa is made up of three generations and is trigenetic. Gametophyte carries the sexual organs that produce globular cystocarpes and contain a second generation that comes from the development of the fertilized egg. The third generation is diploid and will carry tetrasporocysts that are included in the cortex.

It is an autotrophic plant that creates its organic matter by photosynthesis from water, carbon dioxide and mineral salts with green chlorophyll and with other pigments such as red phycoyerythrin that capture light.