Fruit body -3-5 cm high, solitary, greyish-white: branched 3 to 4 times, at first trichotomously finally dichotomously; branches smooth, grey-brown, cylindrical; stalk distinct, tinged with brown; apices swollen and irregularly thickened, whitish-grey. Growing at the side of the track to Butterfly Creek, Eastbourne, Wellington, New Zealand (D. A. Crawford, and J. H. Warcup No. 68, June, 1946). Spores 3-5 x 2.5-4 µm, white, smooth walled, drop shaped, aguttate to once guttulate, apiculus terminal. Basidia 3.4-5 µm wide by –21 µm long, clavate, slender, clamped at base; sterigmata (2-) 4, 4-5 µm long with a slight outward curvature. Hymenium amphigenous, absent from stalk and lower parts of branches, -25 µm wide. Colour in cytoplasm of hymenium layer. The swollen apices in transverse section show a pseudoparenchymatous central medulla of longitudinal hyphae, surrounded by an inflated aerenchymatous region, traversed by strands of loosely interwoven hyphae, passing from the central medulla to an outer compact region underlying the irregularly convoluted hymenium, and filling the knob-like projections (see text-fig. IV). Apparently growth in the apical region becomes localized at a number of areas, giving rise at first to fairly regular rounded projections, but later with further outward growth these extend and become more irregular.A transverse section of a branch below the swollen apex shows a central loose pseudoparenchymatous medulla surrounded by a uniform subhymenium and hymenium. Hyphae monomitic, 2-6 µm wide; not inflated, length variable, clamped; walls slightly thickened. Medullary hyphae elongated, a few interwoven; clamps often elongated, swollen or extended into a branch. In subhymenium hyphae narrower, shorter and interwoven, clamps normal. The swollen apices with their irregular growth separate this species from other members of the Clavariaceae. However, hyphal and basidial structure is in line with the characteristics of the family as is the amphigenous hymenium, extending from the upper branches to the apices.