Calliarthron
| Calliarthron | |
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| File:Calliarthron yessoense - National Museum of Nature and Science, Tokyo - DSC07642.JPG | |
| Calliarthron yessoense | |
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Calliarthron
Manza, 1937
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Calliarthron is a genus containing four species of thalloid intertidal[1] alga. Specimens can reach around 30 cm in size. The thalli take a crustose form. The organisms lack secondary pit connections. Calliarthron reproduces by means of conceptacles; it produces tetraspores, dispores and carpospores. The genus has lignin and contains secondary cell walls, traits which are normally associated with the vascular plants.[1] It is similar to the genus Bossiella.[2]
Calliarthron is calcified, but also has uncalcified joints that allow it to flex in response to the waves to which it is subjected.[1] These joints start out calcified, and decalcify as they grow older.[1] After decalcifying they grow much longer, then fatten themselves up in the same way as xylem formation, resulting in secondary walls.[1]
Species
The 4 species currently recognised are:
- C. latissimum
- C. tuberculosum
- C. yessoense
- C. cheilosporioides[1]
References
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External links
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