APHOTOMARINE
An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.
Cladostephus hirsutus (Linnaeus) C.-F.Boudouresque & M.Perret-Boudouresque, 1984
Scroll down and rollover titles to change screen image or click on title to view image.
Whorled Sand Weed
Cladostephus hirsutus
- out of water 1
Cladostephus hirsutus
- out of water 1
Whorled Sand Weed
Cladostephus hirsutus
- out of water 2
Whorled Sand Weed
Cladostephus hirsutus
- out of water 3
Whorled Sand Weed
Cladostephus hirsutus
- out of water close-up 1
Whorled Sand Weed
Cladostephus hirsutus
- out of water close-up 2
Whorled Sand Weed
Cladostephus hirsutus
- in-situ / shallow sublittoral 1
Whorled Sand Weed
Cladostephus hirsutus
- in-situ / in lowershore pool 1
Whorled Sand Weed
Cladostephus hirsutus
- habitat / location 1
Whorled Sand Weed
Cladostephus hirsutus
- thallus / white background 1
Whorled Sand Weed
Cladostephus hirsutus
- 21.5cm long thallus with 1.0mm division rule 1
Whorled Sand Weed
Cladostephus hirsutus
- close-up of denudated base of thallus / white background 1
Whorled Sand Weed
Cladostephus hirsutus
- calligraphy brush like tip 1
Whorled Sand Weed
Cladostephus hirsutus
- verticillate / whorled axis 1
Whorled Sand Weed
Cladostephus hirsutus
- verticillate / whorled axis 2
Whorled Sand Weed
Cladostephus hirsutus
- verticillate / whorled axis with 0.1mm division rule 1
Whorled Sand Weed
Cladostephus hirsutus
- verticillate / whorled axis with 0.1mm division rule 2
Whorled Sand Weed
Cladostephus hirsutus
- axis / 0.1mm division rule 1
Whorled Sand Weed
Cladostephus hirsutus
- cross section erect axis 1
Specimens above were found on the lowest part of the shore, in pools, and in the shallow sublittoral zone at Chimney Rocks, Penzance, Cornwall, 15.01.21.
Whorled Sand Weed
Cladostephus hirsutus
- group in sandy pool 1
Whorled Sand Weed
Cladostephus hirsutus
- group in sandy pool 2
Whorled Sand Weed
Cladostephus hirsutus
- group in sandy pool 3
Whorled Sand Weed
Cladostephus hirsutus
- group in sandy pool 4
Whorled Sand Weed
Cladostephus hirsutus
- habitat / location 2
Small plants in a shallow sand encroached pool on the lowershore at Albert Pier reef, Penzance, Cornwall, 17.01.21.
Please note the specimens above were photographed in winter. The species will appear differently at other times of the year because of denudation in winter.
Whorled Sand Weed
Cladostephus hirsutus
- in lowershore pool 1
Whorled Sand Weed
Cladostephus hirsutus
- in lowershore pool 2
Whorled Sand Weed
Cladostephus hirsutus
- in lowershore pool 3
Whorled Sand Weed
Cladostephus hirsutus
- in lowershore pool 4
Whorled Sand Weed
Cladostephus hirsutus
- in middleshore pool 1
Whorled Sand Weed
Cladostephus hirsutus
- in middleshore pool 2
Whorled Sand Weed
Cladostephus hirsutus
- on lowershore rocks 1
Images of species taken in a lowershore pool at Battery Rocks, Penzance, Cornwall. 14.08.11; also at Mousehole, near Penzance, Cornwall. 21.09.10.
Please note - Cladostephus spongiosus has recently been divided into two species in the NE Atlantic, Cladostephus spongiosus and Cladostephus hirsutus.
Ref: Svenja Heesch, Fabio Rindi, Michael D. Guiry & Wendy A. Nelson (2020):
Molecular phylogeny and taxonomic reassessment of the genus Cladostephus (Sphacelariales, Phaeophyceae), European Journal of Phycology.
DOI: 10.1080/09670262.2020
.1740947
In general terms Cladostephus spongiosus is a smaller species 4-10cm high with 2-20 upright axes and Cladostephus hirsutus is up to 25cm high with 5-100 upright axes.
AlgaeBase is a database of information on algae that includes terrestrial, marine and freshwater organisms.
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.