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Name derivation:

kompos (Gr.) – elegant + thamnion – a small shrub.



Compsothamnion  (Nägeli) F. Schmitz 1889;  3 of 4 species descriptions are currently accepted taxonomically (Guiry and Guiry 2016).



Erect to 5 cm uniseriate axes alternately branched 3 times in one plane from each axial cell.  Dioecious gametophytes (Dawes and Mathieson 2008).


Similar genera:

Antarcticothamnion Moe and Silva Callithamnion, Compsothamniella Itono and Conferva J.E. Smith.



Epiphyte ~100 km off east coast of Florida;  also found in the Carolinas, Bermuda, the Bahamas, eastern north and tropical Atlantic, and the Mediterranean (Ibid.)



Dawes, C. J. and A. C. Mathieson. 2008. The seaweeds of Florida. Univ. Press of Florida, Gainesville, Florida, 591 pp.

Guiry, M.D. and G.M. Guiry  2014.  AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 2 May 2014.

Schmitz, F.  1889.  Systematische Übersicht der bisher bekannten Gattungen der Florideen.  Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.