• Journal of Plant Biology
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• v.32 no.4
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• pp.363-373
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• 1989

Morphotaxonomic accounts are given to four species of Amphiroa, Rhodophyta from Cheju Island ; A. valonioides Yendo, A. itonoi Srimanobhas et Masaki, A. rigida Lamouroux, and A. misakiensis Yendo. A. valomioides has one-tiered genicula of unequal length and its semiendophytic in other Amphiroan species, whereas A. rigida has two-tiered genicula of equal length and is semi-endophytic in non-articulated coralline alga. A misakiensis has five to thirteen-tiered genicula of unequal length and forms tufts on rocks where the branches are often recumbent. A. rigida is introduced for the first time to Korean flora.

• ALGAE
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• v.22 no.3
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• pp.159-165
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• 2007

Morphological and anatomical characters of Amphiroa rigida Lamouroux were investigated with field materials and taxonomic accounts are given to the species. The species grows in the subtidal zone of Cheju island, and is characterized by semiendophytic habit in Hydrolithon onkodes. The species is well defined by about 1 cm height, loosely tufted thallus with irregular branches, two-tiered geniculum with equal length, geniculum tier connecting by oblique end walls, and conceptacles buried in cortices of intergeniculum. Korean isolates have etrasporangial, male and female conceptacles. The structure and developmental patterns of conceptacles are very similar to those shown in previous studies.