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 comatum
Sporocarpous and/or plasmodiocarpous, scattered , sessile on a broad base , hemispherical in small sporocarps , or depressed and pulvinate , 0.2-0.5 mm wide, up to c. 10 mm long, 0.05-0.3 mm high. Hypothallus absent. Peridium a white crust of compact crystals, fragile, smooth or slightly roughened, adhering mostly to a fragile, transparent, hyaline or pale violaceous inner layer. Dehiscence usually circumscissile leaving a very shallow cup with a nearly vertical rim , in plasmodiocarps sometimes less conspicuously so. Columella absent, the base of the myxocarp roughened with crystals, dull , ivory to pale brown. Capillitium profuse, of very slender, pale brown threads, branched but with few anastomoses , very lightly attached to the base and the peridium, expanding elastically. Spore-mass very dark brown. Spores violaceous, paler on one side, verruculose , the warts arranged in sinuous rows , sometimes forming a reticulum , 10-13 µm diam.
Habitat
Typically found at an altitude of 0 to 1,749 meters (0 to 5,738 feet).Mean = 327.420 meters (1,074.213 feet), Standard Deviation = 473.350 based on 77 observations. Altitude information for each observation from British Oceanographic Data Centre.
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:
comatum
- (Lister) Nann.-Bremek., 1966
- Scientific name: - Didymium comatum (Lister) Nann.-Bremek., 1966
- Specific descriptor:
comatum
- (Lister) Nann.-Bremek., 1966
- 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
- (Lister) Nann.-Bremek. 1966 Notes on Myxomycetes XI: Some new species of Stemonitis, Comatricha, Badhamia, Physarum, Diderma and Didymium Proc. Koninkl. Nederl. Akad. van Wetenschappen, Series C, 69:350-363
- Ing 1999 The Myxomycetes of Britain and Ireland Richmond Publishing Co. Ltd.:321
- Lister, A. and G. Lister. 1925. A Monograph of the Mycetozoa ed. 3 Br. Museum (Nat. Hist.).:110 pl.104c [as D. difforme v. comatum]
- Nannenga-Bremekamp 1991 A guide to Temperate Myxomycetes Biopress Ltd., Bristol.:266
- Neubert, Nowotny and Baumann 1993/1995/2000 Die Myxomyceten Baumann, Gomaringen. Vol.2:101
- Yamamoto, Y. 1998 The Myxomycete Biota of Japan Toyo Shorin Publishing Co., Ltd.:312
More Info
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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 02, 2008. http://www.gbif.org Mediated distribution data from 4 providers.
- Mitchell, David W. December 21, 2007. Provided taxonomic information, physical description, and bibliographic content.
Data Sources
Accessed through GBIF Data Portal March 02, 2008:
- BeBIF Provider: National Botanic Garden Belgium - Myxomycetes
- GBIF-Spain: Flora Mycologica Iberica
- GBIF-Spain: Real Jardin Botanico, Madrid: MA-Fungi
- Staatliche Naturwissenschaftliche Sammlungen Bayerns: The Myxomycetes Collections at the Botanische Staatssammlung München - Collection of Hermann Neubert
- Staatliche Naturwissenschaftliche Sammlungen Bayerns: The Myxomycetes Collections at the Botanische Staatssammlung München - Collection of Martin Schnittler
- University of Arkansas: Planetary Biodiversity Inventory Eumycetozoan Databank
Identifiers
- Biodiversity Heritage Library NamebankID: 9813499
- Catalogue of Life Accepted Name Code: Eum-443
- Global Biodiversity Information Facility Taxonkey: 14371465
- Globally Unique Identifier: urn:lsid:indexfungorum.org:names:329954
- Zipcode Zoo Species Identifier: 2429038
