Description
Genus Didymium
Sporocarpous or plasmodiocarpous. Peridium a thin membrane with a covering of crystalline lime. The peridial lime may be scattered loosely over the surface or united into a crust. Columella or pseudo-columella usually present. Capillitium lime-free, consisting of branched and anastomosed threads, often with nodular thickenings.
Physical Description
Species Didymium annulisporum
Myxocarps gregarious to scattered , sessile, primarily sporocarpous, 0.1-0.4 mm diam., subglobose to depressed , white, occasionally with straight or rarely branched plasmodiocarps 0.08-0-16 mm wide and up to 1.5 mm long. Hypothallus membranous. Peridium appearing as a single, eggshell-like layer composed of a thin membranous, colourless layer charged with crystals. Dehiscence usually basal, separating the peridium as a unit . Columella absent. Capillitium arising mainly from and remaining attached to the base , consisting of sub-parallel, hyaline threads, 1 µm diam., sometimes transversely connected or branched and anastomosed, frequently bearing white, crystalline bodies up to 10 µm wide and 750 µm long trapped within threads, or appearing physaroid with widely scattered, irregular, calcareous nodes connecting 2 or 3 threads. Spore-mass black. Spores dark brown, subglobose, (9-)10(-11) µm diam., the surface uniformly covered by truncate processes, appearing echinulate with light microscopy, and encircled by a conspicuous ± equatorial ring , apiculate in optical section . Plasmodium colourless to milky white.
Taxonomy
- Domain:
Eukaryota
(
)
- Whittaker & Margulis,1978
- Kingdom:
Protozoa
()
- (Goldfuss, 1818) R. Owen, 1858
- Protozoa
- Phylum:
Myxomycota
()
- Class:
Myxomycetes
()
- Order:
Physarales
()
- Family:
Didymiaceae
()
- Genus:
Didymium
()
- Specific descriptor:
annulisporum
- H.W.Keller & Schokn., 1989
- Scientific name: - Didymium annulisporum H.W.Keller & Schokn., 1989
- Specific descriptor:
annulisporum
- H.W.Keller & Schokn., 1989
- Genus:
Didymium
(
- Family:
Didymiaceae
(
- Order:
Physarales
(
- Class:
Myxomycetes
(
- Phylum:
Myxomycota
(
- Kingdom:
Protozoa
(
Notes
Name Status: Accepted Name . Latest taxonomic scrutiny: Kirk P.M. , 14-Sep-2005
Similar Species
Members of the genus Didymium
There are approximately 215 species in this genus. Here are just 100 of them:
D. affine · D. anellus · D. angularisporum · D. angulatum · D. annulatum · D. annulisporum · D. applanatum · D. aquatile · D. atrichum · D. aurantipes · D. australe · D. baculosporum · D. bahiense · D. bahiense var. bahiense · D. bahiense var. microsporum · D. balearicum · D. barteri · D. bonianum · D. bulbillosum · D. bulbotubulatum · D. canariense · D. candidum · D. capitatum · D. chrysopeplum · D. chrysospermum · D. circumcissile · D. circumscissile · D. clavodecus · D. clavus · D. columbinum · D. columella-cavum · D. comatum · D. commutabile · D. congestum · D. contextum var. conglomeratum · D. contextum var. contextum · D. costatum · D. crassicolle · D. croceoflavum · D. crustaceum · D. crustaceum var. obducens · D. curtisii · D. cyanescens · D. daedaleum · D. daedalum · D. decipiens · D. delhianum · D. dictyopodium · D. difforme · D. difforme var. difforme · D. difforme var. repandum · D. disciforme · D. discoideum · D. dubium · D. echinospora · D. echinosporum · D. elegantissimum · D. eremophilum · D. erythrinum · D. excelsum · D. eximium · D. eximuum · D. expandens · D. fairmani · D. fairmanii · D. farinaceum var. confluens · D. farinaceum var. elongatum · D. farinaceum var. subsessile · D. filamentosum · D. flavidum · D. flexuosum · D. floccoides · D. floccosum · D. fuckelianum · D. fulvellum · D. fulvipes · D. fulvum · D. furfuraceum · D. geaster · D. glaucum · D. globosum var. globosum · D. globosum var. stipitatum · D. granuliferum · D. gyrocephalum · D. haretianum · D. herbarum · D. humile · D. hypnophilum · D. ilicinum · D. inconspicuum · D. intermedium · D. iridis · D. karstensii · D. kowalski · D. labyrinthiforme · D. laccatipes · D. laxifila · D. laxifilum · D. lenticulare · D. leoninum
Bibliography
- Keller, H.W. and Schokn. 1989 Life-cycle of a new annulate-spored species of Didymium Mycologia 81(2):248-265
- Neubert, Nowotny and Baumann 1993/1995/2000 Die Myxomyceten Baumann, Gomaringen. Vol.2:96
More Info
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- Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
- Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books
Notes
Contributors
- Bisby, F.A., Y.R. Roskov, M.A. Ruggiero, T.M. Orrell, L.E. Paglinawan, P.W. Brewer, N. Bailly, J. van Hertum, eds (2007). Species 2000 and ITIS Catalogue of Life: 2007 Annual Checklist. Species 2000: Reading, U.K.
- Eumycetozoa.com
- Global Biodiversity Information Facility. Accessed March 06, 2008. http://www.gbif.org Mediated distribution data from 2 providers.
- Mitchell, David W. December 21, 2007. Provided taxonomic information, physical description, and bibliographic content.
Data Sources
Accessed through GBIF Data Portal March 06, 2008:
- Staatliche Naturwissenschaftliche Sammlungen Bayerns: The Myxomycetes Collection at the V. L. Komarov Botanical Institute, St. Petersburg
- University of Arkansas: Planetary Biodiversity Inventory Eumycetozoan Databank
Identifiers
- Biodiversity Heritage Library NamebankID: 3048615
- Catalogue of Life Accepted Name Code: Eum-432
- Globally Unique Identifier: urn:lsid:indexfungorum.org:names:135543
- Zipcode Zoo Species Identifier: 2861299
