Specific features are the small, globose, verruculose spores, slender frequently inflated paraphysate hyphae, and encrusted hyphae embedding masses of crystals. The hymenial surface is finely tuberculate, suggesting a Grandinia, but in the context there is no suggestion of regular spines. When old it is also coloured alutaceous in irregular patches. Plants are chalky and brittle, consequently difficult to section.
As in C. flagellatum, the context is composed of a basal layer (fig. 3, a) of repent hyphae from which arise hyphae of the intermediate layer (fig. 3; b), branched at a wide angle, scantily developed, and embedding masses of calcium crystals. The hymenial layer (fig. 3, c) consists of a narrow subhymenium and a palisade of basidia, paraphyses, and paraphysate hyphae. The last project and are cylindrical, aculeate, or capitate. Spores are globose with finely verruculose walls. Clamp connections are present at all septa.
Below is given a general account of the morphology of the types of hymenophore present in different species and genera, together with particulars of ancillary organs which may be present in the tissues.

COMPOSITAE. Olearia rani: Auckland, Ruatewhenua, Waitakere Ranges, 300 m. CORNACEAE. Griselinia hecida: Wellington, Mt. Tongariro, 900 m, type collection, P.D.D. herbarium, No, 17424; Blyth Track, Ohakune, 700 m. Nelson, Lake Rotoiti, 700 m. Otago, Alton Valley, Tuatapere, 200 m.

Hymenophore annual, cretaceous, brittle, arescent, adherent, effused forming irregular areas to 10 x 3 cm, with scattered outlying islands; hymenial surface white, then cream, finally alutaceous or buff in irregular patches, finely closely tuberculate, not creviced; margin thinning out, white, finely fibrillose, adherent. Context white, 150-200 µ thick, basal layer of a few repent hyphae, intermediate layer of loosely intertwined hyphae embedding masses of crystals; generative hyphae 2.5-3 µ diameter, walls 0.1 µ thick, finely crystal encrusted, with clamp connections. Hymenial layer to 35 µ deep, a scanty palisade of basidia, paraphyses, and paraphysate hyphae. Basidia subclavate, 14-18 x 4.5-5 µ, bearing 4 spores; sterigmata arcuate, slender, to 6 µ long. Paraphyses subclavate, 12-15 x 3.5-4 µ, some encrusted. Paraphysate hyphae projecting to 20 µ, scanty or abundant, fusiform or aculeate, some slightly capitate, 28-35 x 4-5 µ. Spores globose or subglobose, 4.5-6 µ diameter, walls finely verruculose, hyaline, 0.1 µ thick; spines to 0.5 µ long

TYPE LOCALITY: Mt. Tongariro, Wellington, New Zealand.
DISTRIBUTION: New Zealand.

HABITAT: Effused on decorticated decayed wood of branches.

Hymenophorum ceraaceum, fragile, adnatum, effusum; superficie alba deinde cremes, demum alutacea vel bubalina, subtiliter tuberculata, non rimosa. Hyphae generatoriae fibulatae, 2.5-3 µ diam. Basidia subclavata, 14-18 x 4.5-5 µ, 4 sporis. Sporae globosae vel subglobosae, 4.5-6 µ diam., parietibus subtiliter verruculosis, hyalinis. On decorticated decayed wood of Griselinia lucida, Mt. Tongariro, Wellington, N.Z.

Basidiome at first hypochnoid, becoming continuous, at first even, then covered with distant, blunt, completely fertile warts (not odontioid). Hyphae hyaline, thin- to slightly thick-walled, 1.5-3 µm wide, with small, but abruptly curved clamps (Hyphodontia-type). Basal hyphae sometimes with swellings. Cystidia clavate to capitate, 20-35 X 4-5 µm, often with scattered crystals; some capitate cystidia are hyphoid (2-2.5 µm wide) below the terminal swelling, which is up to 5 µm diam. Basidia suburniform, 12-18 X 4-5 µm. Spores hyaline, slightly thick-walled, globose to subglobose, 4.5-5.5 µm diam., echinulate, cyanophilous, not amyloid, with oil droplet and small apiculus.

The species belongs to Rogersella Liberta & Navas (1978) and the name is an earlier synonym of Rogersella aspera Liberta & Navas. Apart from the ornamented spores and the lower warts, the species resembles Grandinia aspera (Fr.) Julich in many respects. Rogersella is, like Lagarobasidium Rilich, a satellite genus of Grandinia Fr. (= Kneiffiella P. Karst. =Hyphodontia J. Erikss.).