Reddish-colored Algae without Flagella –
Archaeplastida – Rhodophyta

Observations on Ceramium diaphanum

Position in the EOL taxonomic tree. Please click on the tree view below to access EOL (Encyclopedia of Life).

Ceramium diaphanum (Lightfoot) Roth 1806

Most likely ID: n.a.

Basionym: Conferva diaphana Lightfoot 1777

Add’l Synonyms: Conferva nodulosa Hudson 1778
                               Ceramium diaphanum var. tenuissimum Roth 1806
                               Boryna diaphana (Lightfoot) Grateloup ex Bory 1822
                               Boryna diaphana var. tenuissima (Roth) Bonnemaison 1828
                             Hormoceras diaphanum (Lightfoot) Kützing 1842
                               Hormoceras nodosum Kützing 1842
                               Hormoceras gracillimum Kützing 1842
                               Gongroceras tenuissimum Kützing 1842
                               Ceramium erumpens Meneghini 1844
                               Ceramium gibbosum Meneghini 1844
                               Ceramium orsinianum Meneghini 1844
                               Ceramium tenuissimum (Roth) Areschoug 1847
                               Ceramium gracillimum (Kützing) Zanardini 1847
                               Gongroceras nodiferum Kützing 1849
                               Hormoceras pulchellum Kützing 1849
                               Ceramium tenuissimum (Roth) J.Agardh 1851
                               Echinoceras diaphanum var. tenuissimum (Roth) Frauenfled 1855
                               Ceramium nodiferum (Kützing) Sperk 1869
                               Ceramium diaphanum var. gracillimum (Kützing) Ardissone 1871
                               Ceramium diaphanum var. pulchellum</i (Kützing) Ardissone 1871
                               Ceramium diaphanum f. modificatum H.E.Petersen 1908
                               Ceramium diaphanum f. zostericola Petersen 1908
                               Ceramium diaphanum f. typicum H.E.Petersen 1908
                               Ceramium diaphanum f. medium Sjöstedt 1928
                               Ceramium tenuissimum var. tenellum Mazoyer 1938

Sampling date 10/2008. Scale bar indicates 200 µm.

Thalli of Ceramium diaphanum together with Bryozoa (Plumatella spec.).

Place name: Hiddensee Bodden (Germany)
Latitude: 54.582633 Longitude: 13.115051

Microscope Olympus BH, camera Olympus C7070WZ.

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Scale bars indicate 200 µm (1), 100 µm (2), 50 µm (3, 4), 25 µm (5).

Five images.

First:	A dichotomously branching red alga of the genus Ceramium. The image shows axial cells that are partially surrounded by cortical cells (red belts). Filament hairs emerge from the cortical cells.
Second:	Close-up.
Third:	The cortical cells have round chloroplasts, while the chloroplasts of the axial cells are worm-shaped.
Fourth:	First cells of an adventitious shoot of Ceramium diaphanum , covered by a thick gelatinous layer (agar-like pectin).
Fifth:	This detailed view of a thallus segment shows cells of the two types found: a long axial cell (light, with worm-shaped rhodoplasts) and many small, round, reddish, cortical cells with their lens-shaped rhodoplasts. In the rounded outgrowth (tetrasporangium) three of the four cells with their nuclei are visible.

Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!

Place name: Hiddensee Bodden (Germany)
Latitude: 54.582633 Longitude: 13.115051

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.

Previous slide

Next slide

Sampling date 10/2008. Scale bars indicate 200 µm.

Two images.

Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!

Place name: Hiddensee Bodden (Germany)
Latitude: 54.582633 Longitude: 13.115051

Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.

© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.

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Observations on Ceramium diaphanum

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