140
R. K. DELL
also extend to areas between 50"s and 60"S, e.g. Ballia callitricha
(Agardh) Kutzing, Desmarestia menziesii J. Agardh, and Iridaea.
The fact that there are no algal records for the Antarctic coast from
72"W to 173"E and from 50"W and 40"E and that Plocamium and
Iridaea collected from Peter I Island constitute the only algae so far
collected from the whole quadrant 90"-180"W (Neushul, 1968) show the
incomplete data available.
It has been suggested that some deep-water algae are heterotrophic.
Neushul (1968) does not find there is any evidence for such a belief and
Zaneveld (1968) does not think the occurrence of deep-water Antarctic
macroscopic algae needs such an explanation.
Four monotypic genera are found only on South Georgia, Melastictus
Reinsch, Stegastrum Reinsch, Microrhinus Skottsberg and Pseudolaingia Levring. Other monotypic genera confined to the Antarctic are
Phaeoglossum (found only on the Antarctic Peninsula), Phyllogigas
(Antarctic Continent, South Shetlands, South Orkneys and South
Georgia), Ascoseira (Antarctic Peninsula, South Georgia and South
Shetlands), Cystosphuera (Antarctic Peninsula and South Shetlands),
Nereoginkgo (Antarctic Peninsula and South Georgia) , Plumariopsis
(Antarctic Peninsula, South Georgia and Kerguelen), and Antarctocolax
(Antarctic Peninsula).
Marine algae do not as a rule have particularly restricted distribution patterns. The presence of so many monotypic genera, in such a
relatively restricted area, is indicative of the peculiar character of the
Antarctic algae. Judging by Papenfuss' (1964) list, the following
species are the only ones known to have a wide distribution around the
Antarctic Continent :
Monostroma huriotii Gain
Geminocarpus geminatus (Hooker fils and Harvey) Skottsberg
Desmarestia menziesii J. Agardh
D . rossii Hooker fils and Harvey
Phyllogigas grandij'olius
Rhodochorton purpureum (Lightfoot) Rosenvinge
Plocamium coccineum (Hudson) Lyngbye
Iridaea cordata (Turner) Bory
Leptosomia simplex (A. and E. S. Gepp) Kylin
Rhodymenia palmati f ormis Sko ttsberg
Ballia callitrichu
Phycodrys antarctica (Skottsberg)
P . quercifolia (Berg) Skottsberg
Polysiphonia abscissa Hooker and Harvey
R. K. DELL
also extend to areas between 50"s and 60"S, e.g. Ballia callitricha
(Agardh) Kutzing, Desmarestia menziesii J. Agardh, and Iridaea.
The fact that there are no algal records for the Antarctic coast from
72"W to 173"E and from 50"W and 40"E and that Plocamium and
Iridaea collected from Peter I Island constitute the only algae so far
collected from the whole quadrant 90"-180"W (Neushul, 1968) show the
incomplete data available.
It has been suggested that some deep-water algae are heterotrophic.
Neushul (1968) does not find there is any evidence for such a belief and
Zaneveld (1968) does not think the occurrence of deep-water Antarctic
macroscopic algae needs such an explanation.
Four monotypic genera are found only on South Georgia, Melastictus
Reinsch, Stegastrum Reinsch, Microrhinus Skottsberg and Pseudolaingia Levring. Other monotypic genera confined to the Antarctic are
Phaeoglossum (found only on the Antarctic Peninsula), Phyllogigas
(Antarctic Continent, South Shetlands, South Orkneys and South
Georgia), Ascoseira (Antarctic Peninsula, South Georgia and South
Shetlands), Cystosphuera (Antarctic Peninsula and South Shetlands),
Nereoginkgo (Antarctic Peninsula and South Georgia) , Plumariopsis
(Antarctic Peninsula, South Georgia and Kerguelen), and Antarctocolax
(Antarctic Peninsula).
Marine algae do not as a rule have particularly restricted distribution patterns. The presence of so many monotypic genera, in such a
relatively restricted area, is indicative of the peculiar character of the
Antarctic algae. Judging by Papenfuss' (1964) list, the following
species are the only ones known to have a wide distribution around the
Antarctic Continent :
Monostroma huriotii Gain
Geminocarpus geminatus (Hooker fils and Harvey) Skottsberg
Desmarestia menziesii J. Agardh
D . rossii Hooker fils and Harvey
Phyllogigas grandij'olius
Rhodochorton purpureum (Lightfoot) Rosenvinge
Plocamium coccineum (Hudson) Lyngbye
Iridaea cordata (Turner) Bory
Leptosomia simplex (A. and E. S. Gepp) Kylin
Rhodymenia palmati f ormis Sko ttsberg
Ballia callitrichu
Phycodrys antarctica (Skottsberg)
P . quercifolia (Berg) Skottsberg
Polysiphonia abscissa Hooker and Harvey