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On Two Species of Kallymenia (Rhodophyta: Gigartinales: Kallymeniaceae) from the Hawaiian Islands, Central Pacific
|Title:||On Two Species of Kallymenia (Rhodophyta: Gigartinales: Kallymeniaceae) from the Hawaiian Islands, Central Pacific|
|Authors:||Abbott, Isabella A.|
McDermid, Karla J.
|Issue Date:||Apr 2002|
|Publisher:||University of Hawai'i Press|
|Citation:||Abbott IA, McDermid KJ. 2002. On two species of Kallymenia (Rhodophyta: Gigartinales: Kallymeniaceae) from the Hawaiian Islands, central Pacific. Pac Sci 56(2): 149-162.|
|Abstract:||Two species of Kallymenia from the Hawaiian Islands, one rare, K.
sessilis Okamura, and the other described here for the first time, K. thompsonii, n.
sp., are examined, compared, and contrasted with other similar Kallymenia species.
Both species are unusual because Kallymenia is generally regarded as a
temperate taxon, and tropical or subtropical species are seldom encountered.
The two species are alike in that they have a female reproductive apparatus that
is monocarpogonial: wherein a single carpogonial filament is associated with a
supporting cell also bearing an arrangement of subsidiary cells that is characteristic
of some of the family Kallymeniaceae. In the genus Kallymenia, vegetative
components shown in a cross section are a narrow outer cortex, often only
three cells thick, followed inwardly by one to two layers of subcortical cells. In
the two species studied here, there appears to be a constant shape and arrangement
of subcortical cells in each species, whereas the number of medullary filaments
and their arrangements appear to be less stable in their configuration than
the subcortical cells. Branched refractive cells or stellate cells, which often occur
in species of Kallymenia, were not seen in K thompsonii and only rarely in K
sessilis. Kallymenia thompsonii commonly has perforations in the maturing blades,
whereas K. sessilis does not.
|Appears in Collections:||Pacific Science Volume 56, Number 2, 2002|
Abbott, Isabella A.
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