Didymium columella-cavum

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 columella-cavum

Sporocarps gregarious , stipitate , erect , 0.5-0.8 mm total height . Sporotheca globose or subglobose, 0.3-0.5(-0.6) mm diam., white or pale grey, with a true columella and usually umbilicate below. Hypothallus discoid , membranous, oehraceous-brown. Stalk 50-65% total height, dark below, ochraceous , holding scattered lime crystals. Peridium with a pale yellow-brown basal plate , ± colourless and with thickened areolae, covered with stellate lime crystals. Dehiscense irregular. Columella pale ochraceous, hollow, filled with air and with lime crystals, reaching to nearly the centre of the sporotheca, subglobose, conical or cylindrical, sometimes with an expanded tip or rarely funnel-shaped. Capillitium profuse, pale brown, flexuose and in part undulate , radiating, branched 1-3 times, lightly attached to the peridium, with a few cross-bars, the tips hyaline . Spore-mass dark brown. Spores pale violet-grey, densely, palely, verruculose , and cluster-warted, (7.5-)8(-9) µm diam.

Taxonomy

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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: columella-cavum - Hochg., Gottsb. & Nann.-Bremek., 1989
        Scientific name: - Didymium columella-cavum Hochg., Gottsb. & Nann.-Bremek., 1989

Notes

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

Similar Species

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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

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Hochg., Gottsb. and Nann.-Bremek. 1989 A new species and a new variety of Didymium from São Paulo State, Brazil Proc. Koninkl. Nederl. Akad. van Wetenschappen, Series C, 92(1):73-79

More Info

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Notes

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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 03, 2008. http://www.gbif.org Mediated distribution data from provider.
Mitchell, David W. December 21, 2007. Provided taxonomic information, physical description, and bibliographic content.

Data Sources

Accessed through GBIF Data Portal March 03, 2008:

University of Arkansas: Planetary Biodiversity Inventory Eumycetozoan Databank

Identifiers

Catalogue of Life Accepted Name Code: Eum-442
Globally Unique Identifier: urn:lsid:indexfungorum.org:names:247449
Zipcode Zoo Species Identifier: 2861309