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Diderma niveum (Rostaf.) T. Macbr. 1899

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Threat status: Data deficient

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Diderma niveum (Rostaf.) T. Macbr., N. Amer. Slime-moulds 100 (1899)
Diderma niveum (Rostaf.) T. Macbr. 1899

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Indigenous, non-endemic
Present
New Zealand
Political Region

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(Rostaf.) T. Macbr.
Rostaf.
T. Macbr.
1899
100
ICN
species
Diderma niveum

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niveum

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Diderma niveum (Rostaf.) T. Macbr. 1899

PDD 74397, 74398, 74399.
Fruiting body a sessile (or sometimes subsessile) sporangium, gregarious to crowded, depressed-globose to pulvinate, 0.7–2.2 mm in diameter. Hypothallus white, calcareous, ranging from abundant to inconspicuous. Peridium consisting of two layers, the outer layer smooth, calcareous, fragile, the inner layer membranous, often iridescent, yellow or orange below, often closely adherent to the outer layer, dehiscence irregular. Columella prominent, globose to hemispherical, ochraceous to deep orange. Capillitium abundant, elastic, consisting of two types of threads, the first type coarse, purple or dusky brown with pale tips, the second type colourless with bead-like expansions, both types sparsely branched and anastomosing. Spores black in mass, violet-brown by transmitted light, minutely roughened, 9–11 µm in diameter. Plasmodium white.
Widely distributed in the mountains of Europe and western North America (Martin & Alexoupulos 1969) and also known from the Antarctic (Ing & Smith 1983). Reported from New Zealand by Stephenson & Johnston (2003), based on specimens from Central Otago
Dead twigs and other types of plant debris or (more rarely) living plants, usually near the edges of melting snowbanks in alpine regions
Martin & Alexopoulos (1969), Stephenson & Stempen (1994), Neubert et al. (1995), Ing (1999).
This is perhaps the most common and widely distributed of the "snowbank" myxomycetes. It is quite variable, and several varieties have been described that possibly warrant recognition as distinct species.

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Diderma niveum (Rostaf.) T. Macbr. 1899
Diderma niveum (Rostaf.) T. Macbr. (1899)
Diderma niveum (Rostaf.) T. Macbr. 1899
Diderma niveum (Rostaf.) T. Macbr. (1899)
Diderma niveum (Rostaf.) T. Macbr. 1899
Diderma niveum (Rostaf.) T. Macbr. (1899)
Diderma niveum (Rostaf.) T. Macbr. 1899
Diderma niveum (Rostaf.) T. Macbr. (1899)
Diderma niveum (Rostaf.) T. Macbr. 1899
Diderma niveum (Rostaf.) T. Macbr. (1899)
Diderma niveum (Rostaf.) T. Macbr. 1899
Diderma niveum (Rostaf.) T. Macbr. (1899)

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Diderma niveum (Rostaf.) T. Macbr. 1899
New Zealand
Diderma niveum (Rostaf.) T. Macbr. 1899
New Zealand
Central Otago
Diderma niveum (Rostaf.) T. Macbr. 1899
New Zealand
Taupo

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34d66565-8c17-11d5-bebb-00508bca8de8
scientific name
Names_Fungi
8 August 2001
8 August 2001
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