Category: Encrusting algae

Details of the concentric rings of Ralfsia, with some missing patches (probably grazed). Cape Agulhas, Western Cape (2020). Ralfsia (Ralfsia verrucosa)
Algae · Brown algae · Encrusting algae · Marine Life · South Africa

Ralfsia (Ralfsia verrucosa)

fockfish1 Comment

Details of the concentric rings of Ralfsia, with some missing patches (probably grazed). Cape Agulhas, Western Cape (2020). Ralfsia verrucosa can be considered an inactive taxon by some (for example, on iNaturalist). It is then replaced by Pseudoralfsia verrucosa. Forms flat patches or irregular, concentric rings. Brown, grading to khaki, with pale edges. About 1… Continue reading Ralfsia (Ralfsia verrucosa)

Cochlear coralline crust covering a rock surface. Jacobsbaai, Western Cape (2020). Coralline crust (Spongites spp)
Algae · Encrusting algae · Marine Life · Red algae

Coralline crust (Spongites spp)

fockfish1 Comment

Cochlear coralline crust covering a rock surface. Jacobsbaai, Western Cape (2020) - iNaturalist Cochlear coralline crust (Spongites yendoi) Hard, encrusting species of crustose coralline algae (Rhodophyta). Thallus relatively thin, mainly composed of filaments of small, often fused, squarish cells, with the lowermost layer up to eight filaments thick of mostly elongated cells. Chalky-white in color,… Continue reading Coralline crust (Spongites spp)