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 Dianema harveyi
BiostatusPresent in region - Indigenous. Non endemic
Article: Stephenson, S.L. (2003). Myxomycetes of New Zealand. Fungi of New Zealand. Ngā Harore o Aotearoa 3: xiv + 238 p. Hong Kong: Fungal Diversity Press.
Description: Fruiting body a sessile sporangium, gregarious, pulvinate or plasmodiocarpous, 0.5 to 2.0 mm in diameter. Peridium thin, membranous, ochraceous to dull red or brown, iridescent, dehiscence irregular. Capillitium consisting of smooth, taut, sparsely forked threads, not anastomosing nor penicillate, running from base to top. Spores free, yellow in mass, pale yellowish by transmitted light, spiny, 8–10 µm in diameter. Plasmodium white.
Habitat: Decaying wood, usually fallen branches.
Distribution: Reported from Asia, Europe, and North America (Martin & Alexopoulos 1969, Yamamoto 1998) and also known from South America (Ing 1999). First reported from New Zealand by Rawson (1937), based on two specimens collected in Dunedin.
Notes: Dianema harveyi is very close to D. depressum but has warted and not reticulate spores. Moreover, the sporangia of the former are usually red or brown (in contrast to the beige to grey-brown sporangia of D. depressum).
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