COLLECTIONS EXAMINED NEW ZEALAND South Island: Prov. Nelson, Lake Rotoiti, 23 May 1968, E. Horak, under species of Nothofagus and Leptospermum (Herb. HK., ZT 68/500); Lake Rotoiti, St. Arnaud, 3o April 1969, E. Horak, under species of Nothofagus (holotype, Herb. HK., ZT 69/274).

Pileus 10-30 mm diam., hemispherical when young, later becoming campanulate or umbonate, rarely flat and expanded; reddish brown, liver brown or sometimes dark melleous; dry, hygrophanous, at the centre deeply wrinkled and radially veined, striate near the margin, veil remnants absent. Lamellae adnexed, crowded; pallid brownish, ochraceous or rusty brown at maturity; edge whitish, finely fimbriate. Stipe 30-70 X 2-6 mm, cylindrical or attenuated upwards, solid, later fistulose; concolorous with the pileus or lighter; dry, densely covered by white silky fibrils, towards the base with several white conspicuous bands of the velum universale, never squarrose or scaly; ring white, striate (sometimes smooth), persistent, immobile. Context brownish. Smell and taste fruity or intensely farinaceous. Spores 8-11.5 X 5-6 µ, amygdaliform, minutely warted, warts sometimes even covering the indistinct mucro, germ pore or plage absent. Basidia 25-34 X 5-8 µ, 4-spored. Cheilocystidia 20-35 X 5-10 µ, clavate or ampullaceous, indistinct, forming a sterile zone at the gill edge. Cuticle consisting of clavate cells, 20-35 X 10-20 µ, rarely 1-layered, usually forming several horizons (see Fig. 6), strongly encrusted with brown pigment; membrane not gelatinized. All hyphae with clamp connections.

HABITAT: Among litter, mainly in Nothofagus forests (N. cliffortioides, N. fusca, N. menziesii; occasionally mixed with species of Leptospermum). New Zealand.

Pileo 10-30 mm lato, hemisphaerico deinde campanulato, ex carneo-brunneo hepatico, sicco, distincte rugoso. Lamellis adnexis, brunneolo-ochraceis, mox ochraceo-ferrugineis, intermixtis. Stipite 30-70 X 2-6 mm, cylindraceo vel apicem versus attenuato, fistuloso, sicco, pileo concolori vel pallidiori, annulo albo immobili striato instructo, basin versus zonis albis nonnullis numquam squarrosis cingulato. Carne brunneola. Odore saporeque fructuolentis vel farinaceis. Sporis 8-11.5 X 5-6 µ, amygdaliformibus, minute verrucosis, subtruncatis. Cheilocystidiis clavatis vel ampullaceis, 20-35 X 5-10 µ, tenuitunicatis. Epicute e cellulis clavatis, 20-35 X 10-20 µ, epithelium efformantibus, pigmento brunneo incrustatis, fibuligeris, membrana hyphorum haud gelatinosa. Inter folia deiecta in silvis praecipue nothofagineis. Novazelandia.

This species is easily recognizable by its deeply wrinkled and veined pileus and the conspicuous white remnants of the velum partiale and velum universale. Thus D. phlebophora, which has roughly the same ecological requirements as D. gunnii differs from it morphologically in the absence of scales towards the base of the stipe and the liver brown colour of the pileus respectively. Owing to these characters both taxa can be readily identified in the field.

Holotypus: Novazelandia, Lake Rotoiti, 30. IV. 1969, E. Horak (Herb. HK., ZT 69/274).