Rhodothamniella

{{Short description|Genus of algae}}

{{Speciesbox

| genus = Rhodothamniella

| parent_authority = Feldmann

| species = floridula

| authority = (Dillwyn) Feldmann

| synonyms =

• Conferva floridula Dillwyn
• Audouinella floridula (Dillwyn) Woelkerling
• Callithamnion floridulum (Dillwyn) Lyngbye
• Ceramium floridulum (Dillwyn) Agardh
• Chromastrum floridulum (Dillwyn) Papenfuss
• Kylinia floridula (Dillwyn) Papenfuss
• Rhodochorton floridulum (Dillwyn) Nägeli

}}

Rhodothamniella floridula is a small red seaweed detectable more easily with the feet than with the eyes.{{Cite journal |last=Knaggs |first=F.W. |last2=Conway |first2=E. |date=December 1964 |title=The life-history ofRhodochorton floridulum(Dillwyn) Näg |url=https://www.tandfonline.com/action/showCitFormats?doi=10.1080/00071616400650091 |journal=British Phycological Bulletin |language=en |volume=2 |issue=5 |pages=339–341 |doi=10.1080/00071616400650091 |issn=0374-6534|doi-access=free }} It thrives only where sand and rock occur together: anchored to the rock, it accumulates sand to form a slightly soft irregular carpet a centimetre or so in thickness. Although the surface is a dull red colour, in cross section the appearance is of a miniature sand dune with no visible algal component. Unable to stand significant desiccation, it prefers locations from the mid-shore downwards.

It is to be found on most suitable shorelines around Britain and northern Europe.{{Cite web |last=Riley |first=K. |date=2005 |title=Rhodothamniella floridula. A red seaweed |url=https://plymsea.ac.uk/id/eprint/8544/ |access-date=2023-01-29 |website=plymsea.ac.uk |language=en}}

{{Gallery

|File:Rhodothamniella 1.jpg|Picture of Rhodothamniella

|File:Rhodothamniella 2.jpg|Picture of Rhodothamniella

}}