New Zealand Journal of Botany abstracts
Desmids (Chlorophyta), including two new species and three new
varieties, in two swamps, a lake, and a tarn in the South Island of New
Zealand
E. A. Flint
Research Associate
Landcare Research
P.O. Box 69
Lincoln 8152, New Zealand
D. B. Williamson
15 Brocks Hill Drive
Oadby
Leicester LE2 5RE,
England
Abstract Swamps at Okarito (Westland), Lake Hill
(near Lake Coleridge), and Red Tarn and Blue Lake (in Mount Cook
National Park) contained 24, 19, 20, and 8 desmid taxa, respectively.
Genera represented by the largest number of taxa were Cosmarium
with 17 taxa (7 of them in Okarito Swamp), Closterium with 9
taxa (6 of them in Lake Hill Swamp), and Staurastrum with 9
taxa (4 of them in Red Tarn). New species are Closterium okaritoense
and Cosmarium paludicola in Okarito Swamp. New varieties are Pleurotaenium
ehrenbergii var. contractum and Cosmarium crassipelle
var. ornatum (both in Lake Hill Swamp), and Actinotaenium
adelochondrum var. parvum (in Red Tarn). New records for
the New Zealand flora are Euastrum verrucosum (in Lake Hill
Swamp), Micrasterias suboblonga var. tecta (in Okarito
Swamp), Cosmarium retusiforme var. incrassatum and Xanthidium
smithii var. maius (both in Red Tarn), and Staurastrum
neglectum and S. subarmigerum (in Blue Lake). Six other
taxa previously recorded in the North Island were found in the South
Island, including the endemic Cosmarium subquadratum var. genuosum
and Xanthidium intermedium.
Keywords freshwater algae; Chlorophyta;
Zygnemaphyceae; Desmidiaceae; desmids; New Zealand; new species; Closterium
okaritoense; Cosmarium paludicola
B03009; Received 3 March 2003; accepted 13 September 2004; Online
publication date 7 April 2005
New Zealand Journal of Botany, 2005, Vol. 43: 285–300
0028–825X/05/4301–0285 © The Royal Society of New Zealand 2005
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