Callithamnion
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| Callithamnion | |
|---|---|
 | |
| Callithamnion corymbosum | |
Scientific classification  | |
| Clade: | Archaeplastida |
| Division: | Rhodophyta |
| Class: | Florideophyceae |
| Order: | Ceramiales |
| Family: | Callithamniaceae |
| Genus: | Callithamnion Lyngbye, 1819 |
| Synonyms[1] | |
| |
Callithamnion is a genus of algae belonging to the family Callithamniaceae.[2]
The genus was first described by Danish botanist Hans Christian Lyngbye in 1819,[2][3] and the type species is Callithamnion corymbosum (Smith) Lyngbye.,[2]
The genus has cosmopolitan distribution.[4] Species are found in Europe (including Norway and Great Britain,[5]), Australia,[6] America (including Massachusetts, New York, North Carolina and Georgia),[7] Newfoundland (Canada),[8] Sri Lanka and South Africa.[9][10]
The genus of Callithamnion has undergone 2 major changes in its history. Carl Nägeli (in 1861) transferred species without alternate branchlets to Antithamnion, Rhodochorton and Acrochaetium.[11] Then Genevieve Feldmann-Mazoyer in 1941 created genus Aglaothamnion for species having uninucleate cells, zig-zag carpogonial branches and lobed groups of carposporangia, and re-circumscribed Callithamnion. Aglaothamnion is now sometimes regarded as a synonym of Callithamnion with insufficient evidence for separate evolutionary lines of development.[2]
