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Overview | |
Forming sporocarps or short plasmodiocarps, sessile, clustered and closely appressed, 0.7-1.7 mm diam. to plasmodiocarpous and 1.6-2.0 x 0.5-0.7 mm, pulvinate, slightly flattened. Hypothallus either scarcely developed or conspicuous and then calcareous, white to ochraceous yellow. Peridium double, the outer layer white, calcareous, readily separating from the inner, smooth, pinkish-white to grey membranous layer; when lime is lacking, myxocarps are dark, glossy brown. Dehiscence irregular. Columella greyish white to pale ochraceous-orange, variable in shape, pulvinate and then occupying much of the base of the sporotheca, or ± globose and then up to 1 mm diam., the basal peridium lined with an orange membrane. Capillitium abundant, hoary to violaceous white and usually paler than that of D. niveum, consisting of delicate, radiating and sparsely anastomosed, sinuous threads of ca. 1 µm diam., which sometimes bear scattered darker nodules, branched and paler towards the periphery. Spore-mass black. Spores purple-brown, (10-)11-13(-14) µm diam., violaceous, distinctly spinulose. SEM shows the ornamentation to be formed by baculae with irregular, ± coralloid apices. Plasmodium white. Nivicole.
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Links to other sites | |
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References |
- Drozdowicz,A. 1985: Diderma alpinum Meylan and Lepidoderma carestianum (Rab.) Rost. - species of Myxomycetes new to the flora of Poland. Zeszyty naukowe Uniwersytetu Jagiellonskiego 13: 115-119.
- Singer,H., Moreno, G., Illana, C. 2004: A revision of the types of Diderma subcaeruleum and D. globosum var. europaeum. Mycotaxon 89(2): 311-320.
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Acknowledgements | |
The Eumycetozoan Project -- working to understand the ecology, sytematics and evolution of myxomycetes, dictostelids and protostelids -- the true slime molds.
Sponsored by grants from the National Science Foundation.
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Feedback |
Please send any corrections and comments about this page to John Shadwick
Department of Biological Sciences, University of Arkansas, Fayetteville, AR 72701, USA
email: jshadwi@uark.edu phone: USA-479-575-7393.
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Updated: 2024-04-29 06:11:18 gmt
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