Abstract

Coprinus comatus and C. atramentarius utilized cellulose in pre-white rotted sycamore wood and cellulose and lignin in straw, causing significant weight loss. Neither decayed sound sycamore or birch wood to any great extent. C. atramentarius may grow on buried wood functioning as a secondary wood rot, C. comatus probably utilizes non-woody plant debris as its resource. Lacrimaria velutina decayed straw, pre-rotted and sound wood, utilizing cellulose in prerotted wood and lignin and cellulose in sound wood and straw. It is a potential white rot of wood. Intolerance of competition and inhibition by tree leaf phenols are possibly important in restricting the distribution of these species to grassy habitats, bare soils and man-disturbed sites. They appear to be predominantly R-selected. Melanoleuca grammopodia caused little weight loss from straw, pre-rotted or sound wood. Tests for polyphenol oxidase and plant cell-wall-degrading enzymes were negative. It is speculated that it may be a symbiont.

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