Macrocystidia reducta E. Horak & Capellano 1980
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Macrocystidia reducta E. Horak & Capellano 1980
Macrocystidia JOSSERAND 1933 (HORAK 1968: 360) is a small genus of agarics which are chiefly characterized by pink to red-brown spore print, ellipsoid and smooth spores and conspicuous pointed cystidia occurring almost everywhere on the surface of the carpophores. These typical features are also found in M. reducta. However, the New Zealand representative is separated from related species by the sub-secotioid carpophores and the ochre-brown colour of pileus and stipe.
The particular micro-structure of the sporal membrane in Macrocystidia (M. cucumis, M. occidentalis; CAPELLANO 1976) suggested to examine also the spores of M. reducta. The EM-micrographs revealed that the spore wall is composed of the following distinct layers perisporium, leptotunica, sclerosporium and endosporium (pl. l, 1-3). This type of structure is also found in the remaining species of the genus and therefore M. reducta has to be considered a typical member of Macrocystidia.