Holotype (PDD 27054); Isotype (Herb. HK. ZT 69/162): 'Ulva Island, Paterson Inlet, Stewart Island, N.Z.; leg. Horak, 23.III.1969'.

Pileus 10-25 mm diam., convex to pulvinate, centre plane at first becoming depressed to subumbilicate, brown, drying beige, glabrous (in the centre sometimes with indistinct radially arranged wrinkles), dry, neither striate nor hygrophanous, cuticle cartilaginous. Lamellae (L 12-16, I 1-7), broadly adnate or subdecurrent, whitish when young turning pink, gill edge concolorous and not fimbriate. Stipe 15-20 x 2-5 mm, cylindrical, robust, grey to beige, with white weft from the mycelium at the base, dry, glabrous, often twisted, hollow, solitary. Context brownish, cartilaginous. Odor and taste acidulous.
Spores 8-9 x 5.5-6.5 µm, 5-6-angled. Basidia 35-40 x 8 µm, 4-spored. Cheilocystidia 35-55 x 8-13 µm, fusiform or lageniform, hyaline, membrane thin-walled. Pleuro- and caulocystidia lacking. Cuticle a cutis of repent or suberect, cylindrical hyphae (5-10 µm diam.), with plasmatic, brown pigment, membrane not gelatinized. Clamp connections absent.

On soil in forests (under Dacrydium cupressinum spp., Weinmannia racemosa). New Zealand

Pileo 10-25 mm lato, e convexo pulvinato, dein depresso et subumbilicato, marginem incurvo, brunneo, glabro, neque striato neque hygrophano. Lamellis late adnatis vel subdecurrentibus, isabellinis, postea roseis, acie integra concolorique instructis. Stipite 15-20 x 2-5 mm, cylindrico, robusto, griseo vel brunneolo, glabro, cavo. Odore saporeque acidulo. Sporis 8-9 x 5.5-6.5 µm, 5-6-angulatis. Basidiis 4-sporigeris. Cheilocystidiis 35-55 x 8-13 µm, fusiformibus, hyalinis. Epicute ex hyphis suberectis cutem formantibum, pigmento brunneo plasmatico instructis. Septis defibulatis. Ad terram in silvis. Novazelandia

This species is characterized by its robust, hollow stipe and the fusiform, hyaline cheilocystidia. Because of the dull brown colours and the habit E. cavipes could be taken to be a species of Tephrocybe Donk.

Holotypus (PDD 27054): 'Ulva Island, Stewart Island, N.Z.; leg. Horak, 23.III.1969'.