The description of Cunningham (1965: 55) is satisfactory. The species was transferred to Antrodiella Ryv. & Johans. by Ryvarden & Johansen (1980) because of the dense basidiocarp, dimitic hyphal system, and small spores.

Holotype: PDD 5279 - New Zealand, Auckland, Hunua Ranges, Upper Wairoa Valley, Sep. 1946, J.M. Dingley, on Beilschmiedia tawa (A. Cunn.) Benth. & Hook. f. ex Kirk.

This is a species of Antrodiella Ryv. & Johans. because of the dense basidiocarp, dimitic hyphal system, small spores, and minute pores with a resinous appearance. It is separated from other species in the genus by the black lines between successive strata of the tubes and by the thickness of the basidiocarp (to 2.5 cm thick). In some collections, scattered, dark-brown, granular deposits are present on walls of the skeletal hyphae. The spores are slightly larger and the pores smaller than those of A. semisupina (Berk. & Curt.) Ryv., the type species.

Holotype: PDD 3868 - New Zealand, Rangitikei, Ruahine Ranges, Ngatimoti (?), 27 Jan. 1933, J.G. Gibbs, on Metrosideros robusta A. Cunn.

Fruit-body resupinate to pileate, annual to perennnial, pileus sulcate, brown and zonate, pore surface white to cream to pale orange, tubes concolorous, context light-coloured, hyphal system dimitic, generative hyphae with clamps, skeletal hyphae thick-walled, dextrinoid, in the pore mouths finely encrusted over a considerable length, basidia clavate and 4-sterigmate, cystidia present in the hymenium, hyaline, ventricose to cylindrical, thin-walled, apically encrusted, spores cylindrical, hyaline, smooth, thin-walled, non-amyloid, and nondextrinoid.

Fructificatio resupinata ad pileata, annua ad perennia, pileus sulcatus, µmbrosus, zonatus, pori facies alba ad cremea, systema hypharum dimiticum, hyphae generatoriae fibulatae, hyphae skeletales dextrinoideae, leviter encrustatae in ore pori, cystidia tenuitunicata, ventricosa ad cylindrica, incrustata, sporae cylindricae, hyalinae, tenuitunicatae, non-amyloidae et non-dextrinoideae.

Type species: Australoporus tasmanicus (Berk.) P.K. Buchanan & Ryvarden comb. nov.
Basionym: Polyporus tasmanicus Berk., Flora Tasmanica 2: 254 (1860).

Cunningham (1965) transferred the species to Flaviporus Murr., while stating that apart from the presence of 'metuloids' the species could belong in Heterobasidion Bref. sensu Cunn. Comparison of the type specimens of Poria aroha, Polyporus tasmanicus Berk. (K), Fomes cuneatus Lloyd (K), and Polyporus suaderis Lloyd (K) show that all are conspecific, with P. tasmanicus being the oldest name.
Macroscopically, the species varies from resupinate to distinctly pileate. The perennial, narrowly concentrically sulcate and zonate, often ungulate pileus and the pale pink to orange pore surface, when fresh, are diagnostic characters.
In the descriptions of both H. tasmanicum and Flaviporus aroha, Cunningham (1965) mistakenly reported generative hyphae to be simple septate when, in fact, they have clamps. He also omitted to report that skeletal hyphae are strongly dextrinoid, becoming red-brown in Melzer's reagent. Skeletal hyphae often protrude into the hymenium, and at pore mouths the ends of skeletal hyphae are finely encrusted. The thick-walled metuloids described for F. aroha were found to be thin-walled, sometimes collapsed, apically encrusted cystidioles. They are more abundant in fertile specimens and may be scarce or absent in old specimens with a poorly preserved hymenium. Spores are elongate ellipsoid, smooth- and thin-walled, nonamyloid, nondextrinoid, and hyaline in the tubes. Those observed on the pileus surface however are light brown and often larger than those in the tubes. Average spore measurements are 8.5-13 x 3.5-6.5 µm.
The unusual combination of characters found in P. tasmanicus means that the species cannot be accommodated in any of the four genera to which Cunningham assigned it. Indeed, we have found no suitable genus for this species.
Dextrinoid skeletal hyphae are found in species of Perenniporia Murr., but this genus has distinctly truncate, thick-walled spores with a variable dextrinoid reaction and lacks encrusted skeletal hyphae. Navisporus Ryv. is a close relative, having dextrinoid skeletal hyphae and navicular to cylindrical spores of similar size to those in Polyporus tasmanicus. However, skeletal hyphae are smooth and no encrusted cystidioles are known in the two species so far described in the genus. Furthermore, the species are brown in colour and have a loose consistency, very different from the hard, light-coloured fruit-bodies of P. tasmanicus. Junghuhnia Corda is characterised by a dimitic hyphal system of a similar type to that found in P. tasmanicus. Cystidia are present, but are developed from the skeletal hyphae and are encrusted at the apex. Thin-walled, ventricose cystidia have not been observed in this genus and the skeletal hyphae are not dextrinoid.
Since this species cannot be accommodated in any known genus without changing the concepts of that genus, we propose a new genus for P. tasmanicus [Australoporus].

The species belongs in Ceriporia Donk because of the resupinate basidiocarp, monomitic hyphal system with simple septate hyphae, absence of cystidia, and smooth, thin-walled, nonamyloid spores, 3.5-5 x 2-3 µm.

Holotype: PDD 4182 - New Zealand, Otago Lakes, Kinloch, Jan. 1942, G.H. Cunningham, on Nothofagus fusca (Hook. f.) Oerst.

The description in Cunningham (1965) is accurate except he described the hyphal system as dimitic with clamped generative hyphae and binding hyphae. We found it to be dimitic with simple septate generative hyphae, 1.5-2.5 µm diam., with a thin to slightly thickened wall, and hyaline, thick-walled to solid, sparingly branched skeletal hyphae, 2-3.5 µm diam. Spores are oval to subglobose, apiculate, hyaline, and nonamyloid, measuring 2.5-3 x 1.7-2.5 µm. The cream to yellow pores are highly variable in appearance, from labyrinthine and up to 3 mm long, to more regular, angular, and 3-5(-7) per mm.
The species cannot be maintained in Poria because Poria Adanson is considered to be a nomen ambiguum and Poria Pers. a later homonym (Ryvarden, 1985). However, it is difficult to find a suitable genus for the species. Arguments can be made for different genera depending on the character(s) considered to be most important. If we consider that septation of the generative hyphae is important taxonomically at the generic level, then genera such as Rigidoporus Murr., Ceriporia Donk, and Physisporinus P. Karst. are possible alternatives.
Rigidoporus has a monomitic to pseudo-dimitic hyphal system, globose spores, small papillate cystidioles in the hymenium and, in some species, large encrusted cystidia. The type species and some related species are pileate and have a reddish pore surface when fresh, fading when dry. The pores are regular and small. The irregular pores, the yellowish to cream pore surface and lack of sterile hymenial elements are characters that separate Poria totara from Rigidoporus species. The skeletal hyphae of P. totara are also more densely arranged and narrower than hyphae typical of Rigidoporus where the rather wide, thick-walled, non-septate hyphae can be interpreted as either skeletal hyphae or as strongly sclerified generative hyphae with very rare septa.
Ceriporia includes resupinate, soft to hard, fragile species with a pore surface varying from white, cream, yellowish or reddish. Sterile hymenial organs are lacking and most species have cylindrical to oblong-ellipsoid spores. However, it has a monomitic hyphal system without a trace of thick-walled hyphae of any kind.
Physisporinus includes two resupinate species with large, globose spores. All hyphae are thin-walled and wide, and cystidial elements are lacking. The colour of the pore surface varies from whitish to red or black when dry and the pores are regular.
Septation of generative hyphae is commonly assumed to be very important in the Polyporaceae and very few genera include species with both types of septation. However, if we ignore the simple septa in Poria totara, other characters such as the type of fruit-body, the pores, colour, and dimitic hyphal system with dominance of skeletal hyphae suggest Diplomitoporus Dom. The spores of that genus are cylindrical to ellipsoid, while those of P. totara are subglobose. Diplomitoporus species cause a white rot as does P. totara, while species of Antrodia P. Karst., another candidate genus, all cause a brown rot.
Thus, whatever genus is considered, the inclusion of P. totara introduces a discordant element. Rather than create a new genus for this species, we feel it is more satisfactory to include it in an existing genus where only one new character is introduced. The choice then is between Ceriporia and Diplomitoporus. As we currently consider that septation is more important than the type of hyphal system, which recently has been shown to be complex with intergrading types, we conclude that Ceriporia is the best choice. C. xylostromatioides (Berk.) Ryv. has subglobose spores and a rather irregular hymenophore and is probably the most closely related species to P. totara. The main character separating these two species is the skeletal hyphae of the latter.

Holotype: PDD 6657 - New Zealand, Coromandel, Whitianga - Coromandel Road, Nov. 1947, G. Chamberlain, on Podocarpus totara G. Benn. ex D. Don.

Cunningham (1965: 130) placed the name in synonomy under Tyromyces chioneus (Fr.) P. Karst. However, it is obvious from Cunningham's description that his concept of T. chioneus is different from the Friesian concept. Cunningham described spores as 2.5-3.5 x 0.5 µm which agree with our measurements from the type of 2.8-3.3 x 0.4-0.5 µm. This is much smaller than in Fries' species, 3.5-4.5 x 1.5-2 µm (Ryvarden, 1978). Furthermore, the Friesian species is never resupinate.
Cunningham (1947, 1965) described the hyphal system of C. coprosmae as dimitic, but careful examination of the thick-walled 'binding' hyphae shows the occasional clamp. The hyphal system is monomitic with walls of generative hyphae varying from thin to irregularly thickened, to very thick or even solid.
Ceriporiopsis Dom. includes species with resupinate, light-coloured fruit-bodies with a monomitic hyphal system and clamps at the septa. No prominent sterile hymenial organs, such as cystidia, are known in the genus, and all species cause a white rot. These characters are found in C. coprosmae and we include it in Ceriporiopsis as defined in Gilbertson & Ryvarden (1986). Niemela (1985) has separated species like Polyporus pannocinctus Rom. and Poria subvermispora Pilat in the genus Gelatoporia Niem. because in both these species gelatinized hyphal layers are present in the fruit-body. Such structures or zones are not present in C. coprosmae.
Cunningham (1965: 131) stated that his Tyromyces chioneus was described by Overholts (1953) as Polyporus semipileatus Peck. This is a misunderstanding. P. semipileatus is a synonym of P. niveus Jungh. and is currently either placed in Incrustoporia Dom. or Skeletocutis Pouz. because of the characteristically encrusted hyphae, especially in the dissepiments. Furthermore, the species is dimitic or semi-trimitic with some branched solid hyphae which have sometimes been described as binding hyphae. Encrusted hyphae of the kind found in Incrustoporia are absent in C. coprosmae.

Holotype: PDD 5252 - New Zealand, Westland, Lake Mapourika, Nov. 1946, J.M. Dingley, on Coprosma sp.

Accepted as Coltricia strigosa.
This is a highly characteristic species in Coltricia with small, strigose basidiocarps and subglobose spores of variable size, measuring 4.5-7 x 4-6 µm. In Melzer's reagent, spores show a negative reaction, unlike those of some other Coltricia species which are weakly dextrinoid.

Holotype: PDD 4417 - New Zealand, Coromandel, Little Barrier Island, 3 Oct. 1945, J.M. Dingley, on rich humus on ground under Leptospermum.

The type [of Dendrochaete vallata] is a typical specimen of Laetiporus percicinus. The species is widespread in the tropics, although nowhere common. It was first recorded from Australia by Reid (1963: 289) as Meripilus talpae (Cooke) Reid. The specimen at Kew that Reid examined (W. Pont no. 4334) has the same collection data as the type of D. vallata.

Holotype: PDD 19906 - Australia, northern Queensland, Stony Creek, Jan. 1954, W. Pont (no. 4334), on ground ? (probably growing from buried wood).

The description in Cunningham (1965) is adequate except for the spores. All collections in PDD are sterile except one (PDD 11098) in which spores are cylindrical, 5-7.5 x 2-2.7 µm. Cunningham described the spores as ellipsoid, 8-10 x 5-6 µm.
We prefer to place the species in Fomitopsis P. Karst. because of the perennial basidiocarp with a crust, slightly coloured context, hyaline, nonamyloid, cylindrical spores, and brown rot in the host. These are all characters of F. pinicola (Sw.: Fr.) P. Karst., the type species of Fomitopsis.

Holotype: PDD 38093 - New Zealand, Auckland, Waitakere Ranges, Anawhata Road, Aug. 1947, J.M. Dingley, on Nestegis cunninghamii (Hook. f.) L.

The colour, irregular hymenophore, trimitic hyphal system, and spore characters of this species conform well to the genus Gloeophyllum P. Karst. Although many species in the genus have cystidia, there are some like G. concentricum which lack them.
The protologue description is adequate except for the shape and size of spores, described by Cunningham as elliptical, 3-3.5 x 1-1.5 µm. Spores from the type, and only collection of this fungus in herb. PDD, measure 4.2-6 x 1.5-1.8 µm and are better described as cylindrical, straight or weakly curved. The concentric arrangement of lamellae is a highly characteristic feature of this species.

Holotype: PDD 12262 - Australia, Queensland, Cape York Peninsula, Lower Archer River, Mar. 1933, L. & G. Thomson, on unknown host.

Cunningham (1965: 90) provided a good description of the species and transferred it to Grifola S.F. Gray because fruit-bodies usually consist of a cluster of imbricate pilei joined by a tuberous base. G. frondosa (Fr.) S.F. Gray, the type species, is similar to G. rosularis in having the same type of hyphal system and spores, although both spores and pores of G. frondosa are larger.
G. rosularis could be considered to belong in Tyromyces, which includes many species with imbricate basidiocarps, a monomitic hyphal system, and subglobose to ellipsoid, nonamyloid, nondextrinoid spores; T. pubescens (Fr.) Pilat is a representative example of this group. However, almost all Tyromyces species produce applanate basidiocarps on dead wood rather than semistipitate basidiocarps arising from a common base. Thus we maintain the species in Grifola.

Holotype: PDD 3914 - New Zealand, Gisborne, Lake Waikaremoana, Waikareiti Track, Jan. 1933, J.G. Gibbs, on Nothofagus sp.

This [Inonotus hispidans G.H. Cunn.] is the same as Polyporus albertinii as indicated by Reid (1967: 164). There is a detailed description in Reid (1963: 277) where he transferred the species to Phaeolus Pat. That genus is typified by P. schweinitzii (Fr.) Pat., and characterised by a brown fruit-body similar to that seen in Inonotus species. However, P. schweinitzii lacks setae and has instead oil-filled cystidia of a type unknown in the Hymenochaetaceae. Furthermore, it causes a brown rot in the wood, while all members of Hymenochaetaceae give a white rot. We feel that these characters alone are sufficient to exclude Phaeolus from the Hymenochaetaceae.
Polyporus albertinii Lloyd is characterized by setal hyphae of the type seen in many representatives of the Hymenochaetaceae and we are in no doubt that the species belongs in Inonotus because of its monomitic hyphal system with wide, brown, simple septate hyphae.

Holotype: PDD 19911 - Australia, Queensland, Magnetic Island, Jun. 1954, J. Hunt, on unknown host.

Accepted as Inonotus nothofagi.
As stated by Cunningham (1965), this species is related to I. radiatus (Sow.: Fr.) P. Karst. of the Northern Hemisphere, but is easily separated by the coloured spores and straight setae. It is confined to Nothofagus. Cunningham (1965) included collections on Quercus from India under I. nothofagi but these were later redetermined as I. diverticulosepta Pegler (Pegler, 1967).

Holotype: PDD 5795 - New Zealand, Wellington, Days Bay, Aug. 1947, G.B. Rawlings, on Nothofagus solandri (Hook. f.) Oerst.

Cunningham (1965) placed this species in Grifola because of the numerous pilei arising from a common base. However, this species has a brown to blackish, very thin cuticle at the pileus surface, sometimes covered in part by a brown adpressed tomentum. Hyphae of the tomentum are brown, wide, and thick-walled with large, conspicuous clamps; hyphae of the context are similar but paler coloured or more typically hyaline. In these characters the species is similar to Ischnoderma resinosum (Fr.) P. Karst. Spores of I. rosulata are ellipsoid and are smaller than the cylindrical spores of I. resinosum. We consider that Ischnoderma P. Karst. is a more suitable genus than Grifola.

Holotype: PDD 5691 - New Zealand, Taupo, Kaingaroa State Forest, May 1946, G.B. Rawlings, on Pinus radiata D. Don.

Junghuhnia rhinocephalus, a rather widespread species in Australia and New Zealand, is somewhat deviating in the genus Junghuhnia Corda since vegetative hyphae are light brown and the context is ochraceous to dark cinnamon. Most other species in the genus have hyaline hyphae and a white, ochraceous to yellowish context, although the context of J. collabens (Fr.) Ryv. is cocoa-brown. This variation in context and hyphal colour is accepted within the genus.
Cunningham (1965) described both Trichaptum rhinocephalum and Trametes tawa and considered them to be distinct species. He examined only the type collection of J. rhinocephalus, from Kew, and four small fragments apparently from this collection were retained (PDD 28062). Examination of these fragments reveals a mixed collection. Three fragments, which are sterile, correspond to J. rhinocephalus, while a fourth is of a different polypore species with a white context, hyaline hyphae, simple septate generative hyphae and subglobose spores, 5-5.5 x 4.5-5.5 µm. These characters appear in Cunningham's description of Trichaptum rhinocephalum, indicating that he mistakenly based at least part of his description on the discordant element. J. rhinocephalus should have been described with a brown context, light brown vegetative hyphae, clamped generative hyphae, and ellipsoid spores measuring 3.5-4 x 2-2.5 µm.
A more accurate description of J. rhinocephalus was given by Cunningham (1965) for Metuloidea tawa, which he designated the type species of Metuloidea G.H. Cunn. This genus, mainly characterised by brown vegetative hyphae and encrusted cystidia, becomes a synonym of Junghuhnia.

This species belongs in Oligoporus Bref. because of the resupinate basidiocarp, monomitic hyphal system with clamps at the septa, and the brown rot. Spores of O. manuka are cylindrical to allantoid and 6-7.5 x 2-2.5 µm, which is larger than the measurements given by Cunningham (1947, 1965) of 5-6 x 1.5-2 µm.

Holotype: PDD 4122 - New Zealand, Taupo, Mt Tongariro, Jan. 1940, G.H. Cunningham, on Leptospermum scoparium J.R. & G. Forst.

Cunningham described this species in Irpex Fr. mainly because the pore mouths in mature specimens are partly split. However, this macroscopic feature is now considered to be of minor importance in delimiting genera. Many genera, such as Antrodia P. Karst., Trametes Fr., and Spongipellis Pat., include some species with a regular pore surface and others with a more or less dentate one. Irpex is typified by I. lacteus Fr. (see Maas Geesteranus, 1974), a distinctly hydnoid species with a dimitic hyphal system. The generative hyphae are simple septate and the cystidia develop from protruding skeletal hyphae which are encrusted over a considerable length. The cystidia in O. spiculifer are typically ventricose and apically encrusted, although some hyphae in the dissepiments are encrusted over longer segments. The cystidia and monomitic hyphal system of O. spiculifer indicate that it does not belong in Irpex.
Oxyporus Donk is characterised by a monomitic hyphal system with simple septate generative hyphae and mostly apically encrusted cystidia. O. pellicula (Jungh.) Ryv. from tropical Africa and Asia is similar in many respects to O. spiculifer, with a dentate, lacerate pore surface, but its spores are larger and more broadly ellipsoid. Spores of O. spiculifer measure 5-6.5 x 2.5-3 µm, larger than the dimensions given by Cunningham (1965) of 4-5 x 1.5-2 µm. From herbarium material, the type of rot appears to be white.

Holotype: PDD 19144 - New Zealand, Buller, vic. Reefton, Staircase Creek, 29 Nov. 1952, S.D. Baker, on Nothofagus fusca (Hook. f.) Oerst.

Fructificatio resupinata ad pileata, annua ad interdum biennia, pars reflexa angusta, alba vel ochracea, poria facies cremea vel ochracea, pori rotundi vel angulati, 4-5 per mm. System hypharum dimiticum, hyphae generatoriae hyalinae, fibulatae, hyphae vegetativae crassitunicatae, indextrinoideae, interdum ramosae ad instar hypharum ligantium, sporae ovoideae, truncatae, crassitunicatae, laeves, hyalinae, dextrinoideae, 5-7 x 3.5-5.5 µm.

This species has a variable fruit-body that can be resupinate, effused-reflexed, or distinctly pileate. Cunningham (1947) first placed the species in Poria Pers., but later, to include the pileate habit, he recombined the name in Polyporus Mich.: Fr. (Cunningham, 1948a) and then in Tyromyces (Cunningham, 1965).
Contrary to the statement of Cunningham (1965), the spores of this species are dextrinoid. The species belongs in Perenniporia Murr. because of this reaction, the thick-walled, ovoid, truncate spores, and the dimitic hyphal system. It is related to P. medulla-panis (Jacq.: Fr.) Donk, but is readily separated by the distinctly dextrinoid spores, measuring 5-7 x 3.5-5.5 µm, and the much more frequently branched vegetative hyphae. Some hyphae are so branched that they can be characterised as binding hyphae of the Bovista type. However, there are transitions to more narrow, slightly flexuous and solid vegetative hyphae of the type common in P. medulla-panis.

Typus: New Zealand, Auckland, Swanson, Waitakere Ranges, 18 Nov. 1945, J.M. Dingley, on Neopanax arboreum (PDD 4435).

This species belongs in Phellinus Quel., and is similar in colour and pore size to P. punctatiformis (Murr.) Ryv. However, the spores of P. kamahi are larger, 5-7(-8.5) x 2.5-3 µm, although Cunningham (1965) described them as being 4-6 x 1.5-2 µm. A conspicuous feature of P. kamahi is the coarse crystals encrusting generative hyphae at or near the pore mouths. Cystidioles, present in the hymenium, are hyaline, thin-walled, lageniform and often have elongated, tapering necks.

Holotype: PDD 5850; isotype PDD 5849 - New Zealand, Bay of Plenty, Mamaku Forest, 9 Nov. 1947, G.H. Cunningham, on Weinmannia racemosa Linn. f.

The species is characterised by strongly coloured spores, and it is restricted to Nothofagus.

There is a good description in Cunningham (1965: 229). The hyaline, cylindrical spores from the type specimen measure 7-8.5 x 2-2.5 µm, somewhat larger than the dimensions given by Cunningham (1965). As noted by Cunningham, Phellinus ferreus (Pers.) Bourd. & Galz. is closely related but differs in being always adnate, never effused-reflexed nor with a black pileus surface as in pileate forms of P. tawhai.

Holotype: PDD 5509 - New Zealand, Taupo, Mt Tongariro, headwaters of Pangarara River, Dec. 1946, G.H. Cunningham, on Nothofagus solandri (Hook. f.) Oerst. var. cliffortioides (Hook.f.) Poole.

Phellinus wahlbergii is characterised by hooked setae and subglobose, hyaline spores, 4-5.5 x 3.5-5 µm. Cunningham (1965: 222) mistakenly included F. uncatus as a synonym of Phellinus setulosus (Lloyd) Imaz. but the latter is tropical, typically ungulate, and has large, ventricose, straight setae and larger spores. Australasian specimens included by Cunningham under P. setulosus and P. zealandicus (Cooke) G.H. Cunn. are considered to be conspecific with P. wahlbergii.
A single type collection for F. uncatus was not designated by Cunningham (1948b). Two collections, PDD 5776 and PDD 5777 have the same data as given in the protologue for the type , except for the date, May 1947 vs June 1947. An error in citation of the date in the protologue is suggested. PDD 5776 is herein designated the lectotype of F. uncatus; this specimen has a majority of setae with hooked apices whereas setae in PDD 5777 are mostly straight.
Cunningham (1948b, 1965) described the rot caused by this fungus as brown but as with all species of Phellinus the rot is white.

As reported by Cunningham (1965) under Poria papyracea (Schw.) Cooke, this is the same as Pachykytospora papyracea although the hyphae are somewhat more branched in the New Zealand specimens than in specimens from North America.

Holotype: PDD 4406 - New Zealand, Waikato, Mt Pirongia, 28 Dec. 1945, J.M. Dingley, on Hedycarya arborea J.R. & G. Forst.

Accepted as 'Poria' weraroensis.
The holotype is badly eaten by insects, discoloured, and sterile. Only one other collection is known. This collection (PDD 50957), in agreement with Cunningham's description of P. weraroensis, has discrete and coalescing, circular, resupinate colonies, individually 5-15 mm across and 1 mm thick, coloured pale yellow with a white margin. Pores are large, 1-2 per mm, with the hymenium lining the floor of the shallow tubes and extending up the vertical tube walls. The dimitic hyphal system consists of clamped generative hyphae and hyaline to pale yellow, nondextrinoid skeletal hyphae. Spores are hyaline, ellipsoid, 3.5-5 x 2.5-3 µm.
Both the type and PDD 50957 appear to be young and not fully developed. The irregular hymenophore varying from almost smooth through tuberculate to dentate or poroid in the centre of the small fruit-bodies strongly resembles species of Schizopora. However, the sterile elements typical of this genus are lacking in the fertile collection (PDD 50957), although the spores and the hyphal system come very close to that of S. paradoxa (Schrad.: Fr.) Donk, a widespread and variable species. The protruding skeletal hyphae in the dissepiments of S. paradoxa have a characteristic scattered, rather coarse encrustation. Some hyphae in P. weraroensis are encrusted, but they differ in appearance from those seen in Schizopora. The hymenium in young specimens of Schizopora often covers both the pore base and the side walls, underlining the relationship of this genus to many smooth and grandinioid species in the Corticiaceae.
The dimitic hyphal system and fertile pore bases suggest that P. weraroensis might belong in Theleporus Fr. but the species lacks the dendrohyphidia and the more regular pore surface seen in even young and small fruit-bodies of Theleporus.
More collections are needed before a proper evaluation of this species can be made.

Holotype: PDD 1838 - New Zealand, Wellington, Weraroa, 12 Aug. 1919, G.H. Cunningham, on Coprosma grandifolia Hook.f.

There is a good description of macroscopic characters in Cunningham (1965: 197), but the illustration (fig. 36, p. 197) is simplistic. The spores are smooth, not verruculose as indicated by Cunningham who was probably misled by the asperulate mould spores present in the type specimen. The basidiospores although mostly collapsed and difficult to observe are broadly ellipsoid to subglobose, very thin-walled, 5-6.3 x 4.2-5.5 µm, with a large oil droplet. According to Cunningham's illustration it should be very easy to observe septa on the generative hyphae. However, the context and trama are dominated by strongly agglutinated, thick-walled, skeletal-like hyphae and it took considerable time to find a single clearly differentiated septum.
The holotype, and only collection of C. cartilaginea, is a young specimen of Coltricia aureofulva (holotype PDD 175; several other PDD collections also examined). In Cunningham (1965: 191) the two species are mainly separated on the mistaken difference in spore wall ornamentation. Spores of C. aureofulva are hyaline, smooth, subglobose, nonamyloid, (4.7-)5-6.5(-7.3) x (3.7-)4.5-5.5(-6) µm. Septa of generative hyphae were most readily observed in the trama. Pilei in the holotype of C. cartilaginea are smaller than those typical of C. aureofulva.
Coltricia aureofulva does not belong in Coltricia S.F. Gray, a member of the Hymenochaetaceae, as it does not share the brown hyphal colour nor the black xanthochroic reaction with KOH common to species in the genus. The orange colour, type of consistency, spores, and simple septate generative hyphae indicate that the species belongs in Rigidoporus Murr. The distinct reddening of hyphae in KOH reminds one of Pycnoporellus Murr. emend. Kotl. & Pouz. but other characters such as pore size, spore shape, and absence of cystidia do not conform to this genus.

Holotype: PDD 3869 - New Zealand, Wellington, Tararua Ranges, Ohau River, Jan. 1933, E.E. Chamberlain, on unknown host.

Coltricia laeta (Cooke) G.H. Cunn. is closely related to C. aureofulva with similar fruit-body colour, red colour of hyphae in KOH, and similar spores. It differs in its larger and more robust form, larger pores, and wider, thinner-walled, more frequently simple septate hyphae. As with C. aureofulva, we consider that this species belongs in Rigidoporus, as: Rigidoporus laeteus (Cooke) P.K. Buchanan & Ryvarden comb. nov. Basionym: Polyporus laetus Cooke, Grevillea 12: 16 (1883).

This characteristic species belongs in Schizopora Velen. emend. Donk and is readily separated from the widespread S. paradoxa (Schrad.: Fr.) Donk by its cylindrical to suballantoid spores and distinctly monomitic hyphal system. Otherwise, the two species have in common hyaline cystidioles, bulbous hyphal ends, clamped, Hyphodontia-like hyphae, and coarse encrustation of hyphae in the dissepiments. Spores of S. nothofagi measure 6-8(-10) x 2-3 µm, which is larger than the measurements given by Cunningham (1965) of 5-6.5 x 1.5-2 µm.

Holotype: PDD 5275 - New Zealand, Taupo, Mt Tongariro, Waihohonu River, Jan. 1947, J.D. Atkinson, on Nothofagus solandri (Hook. f.) Oerst. var. cliffortioides (Hook. f.) Poole.

The species was transferred to Chaetoporus P. Karst. by Cunningham (1965) because he interpreted the encrusted skeletal hyphae as true cystidia. We concur with Rachjenberg (1983: 505), however, that the skeletal hyphae do not form true cystidia. The finely encrusted hyphae are of the type characteristic of the genus Skeletocutis Kotl. & Pouz. Other characters of S. novaezelandiae, such as the dimitic hyphal system with clamped generative hyphae, small pores, and small, nonamyloid spores, are also typical of Skeletocutis.

Holotype: PDD 5322 - New Zealand, Bay of Plenty, Mt Te Aroha, Nov. 1946, G.H. Cunningham, on Metrosideros sp.

Accepted as Tyromyces falcatus.
The description by Cunningham of macroscopic characters is satisfactory, but there are misleading statements about the microscopic characters. The septa of the generative hyphae are not simple, but have large, conspicuous clamps. The basidiocarp is composed of mostly unbranched hyphae with very thick walls. These vegetative hyphae were described by Cunningham as binding hyphae but appear in the illustration (Cunningham, 1965: fig. 28) as skeletal hyphae. We interpret them as skeletal hyphae with scattered side-branches, the side-branches not being as common or regular as described by Cunningham. The thick hyphal walls often appear to be multilayered and are refractive in KOH. T. falcatus has a harder texture than most other species in Tyromyces.

Holotype: PDD 15612 - New Zealand, Westland, Ahaura, Orwell Creek, Apr. 1955, J.M. Dingley, on Nothofagus fusca (Hook. f.) Oerst.

Accepted as Tyromyces stramenticus.
A good description is given in the protologue. Characteristic features of the species include the coarse bundles of agglutinated hyphae covering the pileus surface, the agglutinated hyphae of both context and dissepiments, lacerate pore mouths, and the small spores measuring 2.5-4 x 2-2.5 µm. The hyphal system is monomitic with the clamped generative hyphae only readily separable at the margin.

Holotype: PDD 11038 - New Zealand, Taupo, Mt Ruapehu, Whakapapaiti Stream, Jan. 1951, J.M. Dingley, on Nothofagus solandri (Hook. f.) Oerst. var. cliffortioides (Hook. f.) Poole.

Accepted as Tyromyces toatoa.
The dark surface and thin cuticle of the small, effused-reflexed pilei make the species easy to recognise and separate it from other species in the genus. Spores are suballantoid, 4-5 x 1.5-2 µm.

Holotype: PDD 7792 - New Zealand, Taupo, Mt Ruapehu, Whakapapa Stream, 19 Oct. 1949, J.M. Dingley, on Phyllocladus alpinus Hook. f.