Didymium circumscissile

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 circumscissile

Sporocarps gregarious , crowded or scattered , sessile on a constricted base , globose , obovate or turbinate , occasionally reniform , operculate , 0.07-0.3 mm diam., 0.1-0.3 mm high, whitish, brownish grey or black. Hypothallus thin, membranous, inconspicuous, continuous. Peridium membranous, hyaline to pale translucent brown, persisting as a deep cup , the operculum convex , lightly encrusted with angular lime crystals, the lime occasionally forming a very thin, wrinkled crust, lime crystals occasionally found on the lower portions of the peridium. Dehiscence circumcissile. Capillitium usually lacking, when present consisting of short, rarely branching threads, arising from the thickened base and attached to the inner surface of the peridium and operculum, hyaline. Columella absent, the sporotheca base occasionally thickened. Spore-mass dark brown. Spores violaceous brown, 10-12 µm diam., verruculose . Plasmodium hyaline.

Taxonomy

[ Back to top ]

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: circumscissile - K.D.Whitney & L.S.Olive, 1983
        Scientific name: - Didymium circumscissile K.D.Whitney & L.S.Olive, 1983

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: Kirk P.M. , 14-Sep-2005

Similar Species

[ Back to top ]

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

[ Back to top ]

Whitney, K.D. and L.S. Olive 1983 A new Didymium from Rarotonga, Cook Islands Mycologia 75(4):628-633 [as D. circumscessile]

More Info

[ Back to top ]

Search for Pictures: images.google.com
Search for Scholarly Articles: Google Scholar
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

[ Back to top ]

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
Mitchell, David W. December 21, 2007. Provided taxonomic information, physical description, and bibliographic content.

Identifiers

Biodiversity Heritage Library NamebankID: 3024912
Catalogue of Life Accepted Name Code: Eum-439
Globally Unique Identifier: urn:lsid:indexfungorum.org:names:107921
Zipcode Zoo Species Identifier: 2861306