Results 121 to 130 of about 1,000 (170)

New insights into the morphology, taxonomy and biogeography of Bambusina armata (Desmidiaceae, Zygnematophyceae) and morphologically allied taxa

Phytotaxa
Bambusina armata var. raciborskii is a rare desmid previously reported only from Brazil, Madagascar, and Thailand. This study documents its first record from continental Africa, based on material collected in central Angola.
A. Levanets, S. V. van Vuuren
semanticscholar   +1 more source

TYPIFICATION OF THE GENERIC DESMID NAME MICRASTERIAS DESMIDIACEAE

TAXON, 1977
SummaryHistorical analysis of the various generic concepts of Micrasterias (Desmidiaceae, Zygnemaphyceae) since its original description by C. Agardh in 1827 leads to the following conclusions: 1) the name Micrasterias of C. Agardh, 1827, is not valid since it was published before the starting point for nomenclature in the Desmidiaceae (Ralfs, 1848); 2)
Carlos E. de M. Bicudo, Laine Sormus
openaire   +1 more source

SCANNING ELECTRON MICROSCOPY: A NEW APPROACH TO THE DESMIDIACEAE

Journal of Phycology, 1969
SUMMARY A camera lucida drawing, light and SEM micro‐graphs of Cosmarium botrytis are contrasted with the intent of showing the advantages of SEM in systematic and morphological investigations. Several developmental questions amenable to an approach with SEM have arisen.
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Desmids (Chlorophyta, Desmidiaceae) from Thale Noi (Thailand)

Nordic Journal of Botany, 2000
The desmid flora of laguna Thale Noi, a large freshwater lake in the south‐eastern part of Thailand, appeared to be characterized by a high portion of non‐cosmopolitan taxa. Next to a series of pantropical species, quite a lot of Indo‐Malaysian/North Australian flora elements were encountered.
openaire   +3 more sources

The Desmidiaceae of Madison Pond, Williamson County, Illinois

American Midland Naturalist, 1962
A check-list of the Desmidiaceae of Madison Pond, Williamson County, Illinois, is presented. A total of fifty-five species, varieties, and forms are included in this report. Of this number, twenty- eight are not included in The Algae of Illinois.
Gary E. Dillard, Robert H. Mohlenbrock
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Diversification of the Euastrum mononcylum Group of Desmids (Chlorophyta, Desmidiaceae)

Systematics and Geography of Plants, 2000
It is suggested that Euastrum species characterized by cells lacking a sharp apical incision and with broadly rounded lobes, capped with series of conical wall granules, are centred on Euastrum mononcylum. From this species, the other representatives of the group may be considered as being derived by reductions or elaborations in their morphology ...
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New records of the rare, endemic species Spondylosium luetzelburgianum comb. nov. and S. simplex comb. nov. (Desmidiaceae) from Brazil

Phytotaxa, 2019
The rare desmid species Sphaerozosma luetzelburgianum Krieger and Phymatodocis simplex Förster, endemic to Brazil, are transferred to the genus Spondylosium. Distribution data as well as taxonomic notes on the two species are provided.
G. J. P. Ramos, C. W. N. Moura
semanticscholar   +1 more source

Remarkable desmids (Desmidiaceae, Charophyta) from Sardinia, Italy

Nordic Journal of Botany, 2007
A number of benthic microfauna samples collected in Sardinia in the 1970s, and screened for the occurrence of microalgae in the 1990s, revealed some remarkable desmid species. Most of these species could not be found in a series of samples collected in 2006.
Peter F. M. Coesel, ALFINITO, Silvia
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Towards an omega taxonomy in the Desmidiaceae (chlorophyta)

1981
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Rare and new desmids (Desmidiaceae, Chlorophyta) from Japan

Phycological Research, 1999
SUMMARY A number of rare or unknown desmid species were revealed in samples collected from a range of aquatic habitats in Japan. In the present paper we describe one new species of the family Desmidiaceae, Staurastrum tsukubicum sp. nov. and report the presence in Japan of two species, Staurastrum levanderi Gronbl.
Andrey A. Gontcharov, Makoto M. Watanabe
openaire   +1 more source