A TAXONOMIC STUDY OF THE GENUS HEDOPHYLLUM SETCHELL
The genus Hedophyllum Setchell consists of one variable species, H. sessile (C. Ag.) Setchell. Field observations and experiments show that H. subsessile Setchell was based upon a form characteristic of the type species in the second summer of its life. H. spirale Yendo is reduced to synonymy with L...
| Published in: | Canadian Journal of Botany |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1965
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/b65-150 http://www.nrcresearchpress.com/doi/pdf/10.1139/b65-150 |
| Summary: | The genus Hedophyllum Setchell consists of one variable species, H. sessile (C. Ag.) Setchell. Field observations and experiments show that H. subsessile Setchell was based upon a form characteristic of the type species in the second summer of its life. H. spirale Yendo is reduced to synonymy with Laminaria bongardiana P. et R., and H. kuroshioense Segawa is transferred to the genus Laminaria.Observations of the genus in the field throughout most of its range in the northeast Pacific indicate morphological differences between populations in the areas east and west of Yakutat, in the Gulf of Alaska. These differences appear to be related to sea temperature.Morphological variations in populations of Hedophyllum studied along Juan de Fuca Strait appear to be caused by exposure to sunlight and the mechanical effects of wave action. |
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