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Cunningham, G.H. 1947: New Zealand Polyporaceae. 1. The genus Poria. New Zealand Department of Scientific and Industrial Research, Plant Diseases Division, Bulletin. 72.

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Cunningham, G.H. 1947: New Zealand Polyporaceae. 1. The genus Poria. New Zealand Department of Scientific and Industrial Research, Plant Diseases Division, Bulletin. 72.
New Zealand Department of Scientific and Industrial Research, Plant Diseases Division, Bulletin.
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Poria aroha G. Cunn. 1947
Beilschmiedia tawa (A.Cunn.) Hook.f. & Benth., on bark of dead fallen trunk. Auckland. Mt. Te Aroha, 1,500 feet, Nov. 1946, G.H.C. type collection.
Hymenophore effused, to 16 x 5 cm., 2-4 mm. thick, firm with numerous outlying islands; surface cream or isabelline, or occasionally drying some shade of brown, even, or undulating and nodose ; margin irregular, rounded, waved, finely tomentose, byssoid, sterile for a width of 2-3 mm., lifting. Pores not in strata, round or angular, often oblique, in section pallid isabelline, to 4 mm. deep, 100-150 µ diameter, or 4-5 to mm.; dissepiments 50-150 µ, occasionally to 500 µ thick, equal, of woven partly parallel hyphae, apices tapering, firmly woven, a few apical hyphae with rounded apices and crystal coated. Context 1-2 mm. thick, floccose, pallid isabelline, closely woven, not gelatinized but with coloured gelatinous matter scattered between hyphae; skeletal hyphae to 4 µ thick, lumen 1-2 µ, staining less deeply in old hyphae which are more thickened in walls, aseptate, sparsely branched, somewhat irregularly waved near ends; generative hyphae to 2 µ thick, delicate walled, tinted by stains, somewhat sparingly branched and septate, readily collapsing, clamp connections present but scanty. Cystidia present in the hymenium, hyaline or tinted yellow, clavate, to 25 x 10 µ, walls about 3 µ thick, capped with crystals. Basidial type clavate, basidia clavate, scanty, to 16 x 1 µ, soon collapsing. Spores elliptical, 9-12 x 4-6 µ, hyaline, smooth, soon collapsing.
New Zealand.

Hymenophorum ad 16 x 5 cm., 2-4 mm. crassum, firmum, coriaceum, cremeum vel isabellinum. Pori rotundati, saepe obliqui, 3-4 mm. profundi, 100-150 µ diam.; dissepimenta 50-150 µ crassa. Contextus pallide isabellinus, 1-2 mm. crassus, textilis. Hypharum systema dimiticum. Hyphae skeletales sparse ramificatae, aseptatae, 3-4 µ crassae, lumine 1-2 µ; hyphae generatoriae ad 2 µ crassae, sparse ramificatae, septatae, fibulatae. Cystidia clavata, ad 25 x 10 µ, crystallis pilleata. Typus basidialis clavatus. Sporae ellipticae, 9-12 x 4-6 µ, leves, hyalina.

Hab.: Beilschmeidia tawa (A.Cunn). Hook.f. & Benth. Auckland, Mt. Te Aroha, 500 m., specimen typicum.

When fresh plants are white or cream, though a few may be coloured isabelline. Spores are present only in young plants, since basidia and spores early collapse, leaving only remnants attached to walls of dissepiments. Specimens possess a pleasant smell when freshly gathered, as of ripe peaches; this soon disappears when plants are dried. The large smooth spores separate the species from all save P. leucoplaca. From this it differs in the presence of capitate cystidia; thicker differently coloured hymenophore and scantily branched skeletal hyphae.
Poria coprosmae G. Cunn. 1947

Coprosma sp., on bark of dead standing branch. Westland. Lake Mapouriki, 350 feet, Nov. 1946, Joan Dingley, type collection.Hoheria glabrata Sprague & Summerh., on bark of fallen branch. Westland. Douglas Rock track, Copland Valley, 3,500 feet, Jan. 1947, G.H.C. Olearia avicenniaefolia (Raoul) Hook.f., on bark of dead standing branches. Westland. Fox River, Old Glacier track, 580 feet, Nov. 1946, Joan Dingley. Weinnmannia racimosa L.f., on decorticated fallen branch. Westland. Waiho Stream, 500 feet, Nov. 1946, Joan Dingley.

Hymenophore appearing as discrete orbicular areas to 1 cm. diameter,or linear when to 5 x 1 cm., 0.5-1.3 mm. thick, with several outlying islands, at first cream, becoming isabelline or bay brown; margin definite, to 1 mm. wide, white or polished, becoming abrupt or inturned, even, brown; surface even, glancing, dissepiments not toothed. Pores not in strata, round or slightly irregular (in young specimens a few at first navicular and to 1 mm. long), cream or isabelline in section, 0.3-1 mm. deep, 75-150 µ diameter, or 5-8 to mm.; dissepiments 25-50 µ thick, of densely woven hyphae, apices even, of closely compacted hyphae. Context white or cream, discoloured when old, 0.1-0.2 mm. thick, of densely woven hyphae, appearing almost sclerotioid; skeletal hyphae of the bovista type, freely branched, aseptate, 2.5-3 µ thick, lumen variable, from 1 µ to being almost obliterated, non-staining, walls thinner in dissepiments; generative hyphae 2 µ thick, branched, septate, staining, with clamp connections. Basidial type merulioid, basidia cylindrical, or subclavate, packed closely into a permanent palisade, 6-8 x 2-3 µ. Spores allantoid, 3-3.5 x 0.5-1 µ, hyaline, smooth.

New Zealand.
Hymenophorum ad 5 x 1 cm., 0.5-1 mm. crassum, firmum, album, demum isabellinum vel fuligineum. Pori rotundati, 0.3-1 mm. profundi, 75-150 µ diam.; dissepimenta 25-50 µ crassa. Contextus cremeus, 0.1-0.2 mm. crassus, densiter textilis. Hypharum systema dimiticum. Hyphae skeletales libere ramificatae, bovistae typi, 2.5-3 µ crassae, aseptatae, lumine angusta; hyphae generatoriae 2 µ crassae, ramificatae, septatae, fibulatae. Typus basidialis merulioideus. Sporae allantoideae, 3-3.5 x 0.5-1 µ, leves, hyalinae.
Characters of the species are the bovista type skeletal hyphae, merulioid basidial type, small allantoid spores and delicate dissepiments. At first the hymenophore is soft, cream coloured, fragile and with somewhat large and irregular pores; as plants mature pores become smaller and more regular in shape, colour changes to some shade of brown, and plants become hard and horny with cliff-like abrupt margins. In one collection the hymenophore formed linear areas to 30 cm. in length.
Hab.: Coprosma sp. Westland, Lake Mapouriki, 120 m., specimen typicum.
Poria cordylines G. Cunn. 1947

Cordyline australis (Forst.f.) Hook.f., on bark and stem of standing rotting trunk.

Auckland. Claudelands Reserve, Hamilton, 200 feet, Nov. 1946, G.H.C., type collection.

Hymenophore to 15 x 10 cm., 5-16 mm. thick, with white pore mouths, turning brown where bruised and drying smoky brown or fuscous; surface undulating, of groups of pores overlapping others, leaving vertical sections of pores exposed to 10 mm., when longitudinally striate; margin obscure, abrupt, 1-2 mm. wide, dingy white or isabelline. Pores not in strata, obliquely inserted, to 15 mm. deep, irregularly angular, polygonal, or elliptical, 0.2-1 mm. diameter, or 0.2-0.3 x 1 mm., dingy white when fresh, drying wood colour with fuscous margins; dissepiments 50-200 µ thick, commonly 75-100 µ, equal, of woven gelatinized mainly parallel hyphae, margins even, not velutinate. Context to 1 mm. thick, isabelline, of densely woven hyphae; skeletal hyphx 3-4 µ thick, lumen 2 µ, hyaline, aseptate, unbranched, staining strongly; generative hyphae 1.5-2 µ thick, delicate walled, septate, branched, clamp connections present, scanty. Basidial type clavate, basidia appearing cruciate owing to adhering spores, clavate, 8-10 x 4-5 µ, sterigmata to 10 µ long, embedded in a gelatinous matrix, forming a dense palisade. Spores elliptical, ovate, or slightly kidney shaped, 4.5-5 x 2.5-3 µ, hyaline, smooth, cemented together at the apices of the basidia.
New Zealand.

Hymenophorum ad 15 x 10 cm., 5-16 mm. crassum, firmum, corneum, isabellinum, in ore pori album, siccitate fusco-brunneum. Pori obliqui, angulati, 6-15 mm. profundi, 0.2-0.3 x 1 mm. diam.; dissepimenta 50-200 µ crassa. Contextus isabellinus, 0.7-1 mm. crassus, densiter textilis. Hypharum systema dimiticum. Hyphae skeletales aseptatae, haud ramificatae, 3-4 µ crassae, lumine 2 µ; hyphae generatoriae 1.5-2 µ crassae, septatae, ramificatae, fibulatae. Typus basidialis clavatus. Sporae ellipticae vel reniformes, 4.5-5 x 2.5-3 µ, leves, hyalinae.

Hab.: Cordyline australis Hook.f. Auckland, Claudelands Reserve, Hamilton, 80 m., specimen typicum.

Specimens were found upon the interior of a rotting stump, growing obliquely, and extending down the bark on the lower surface. The elongated pores occur in overlapping groups and give to the surface of the hymenophore an undulate appearance. When fresh pore mouths are white--contrasting with the isabelline context--but soon change on drying or where bruised to a dingy wood colour. Basidia are embedded in copious mucilage which tends to hold spores upon their apices in groups of four, so that basidia appear cruciate when viewed from above. Skeletal hyphae are often coated with crystals.
Poria curreyana (Cooke) G. Cunn. 1947
Beilschmiedia tawa (A.Cunn.) Hook.f. & Benth., on bark of fallen branch. Auckland. Mangatawhiri Stream, Hunua Range, July 1946, Joan Dingley. Carpodetus serratus Forst., on bark of fallen branch. Auckland. Maumaukau Valley, Hunua Range, Sept. 1946, Joan Dingley. Elaeocarpus dentatus (Forst.) Vahl., on bark of fallen branch. Auckland. Waikaretu, 400 feet, Oct. 1946, Mrs. G.Aston. Unknown Host. on decorticated rotting log lying on ground. Auckland. Mt. Wellington, near sea level, July 1931, M.Hodgkins.

Hymenophore effused, to 7 x 4 cm., 0.5-1 mm. thick, at first pallid green or dingy grey, blackening where bruised, finally becoming almost black upon the surface; margin lifting, 2-3 mm. wide, byssoid, dingy grey to some shade of greyish brown, irregular; surface even, or undulate, dissepiments not toothed. Pores not in strata, round or slightly angular, 5-7 to mm., or 3-5 to mm. when young, in section isabelline, greyish or dingy brown, to 0.8 mm. deep, 150-200 µ diameter; dissepiments 25-150 µ thick, apices of compact woven hyphae, slightly velutinate, coloured black by a mucilaginous precipitate covering hyphal walls and filling interstices. Context 200-500 µ thick, of hyaline hyphae mostly parallel at the base and in dissepiments, sclerotioid between base and pores and with bands of black mucilage lying between hyphae, crystals abundant, massive; generative hyphae 3-6 µ diameter, lumen 2-3 µ, branched, septate, clamp connections present, in old specimens a few of the basal hyphae with tinted walls. Basidial type clavate, basidia clavate, 8-12 x 4-5 µ, forming a compact palisade. Spores elliptical, ovate, or pip-shaped, 3.5-4 x 2-2.5 µ, hyaline, smooth.

New Zealand.

Characters of the species are the dark colour of the hymenium, blackening when old or bruised, sclerotioid context, monomitic hyphal system, and small ovate or elliptical spores. Although superficially the plant might be sought under species with brown coloured hyphae, it belongs to the hyaline series, since the hyphae are hyaline, the dark colour being produced by quantities of fuscous mucilage embedding hyphae of the context and dissepiments.

The surface of the hymenophore in different collections may be pallid yellow, greenish yellow, fuscous, or black, sometimes most colours appearing in one collection. When bruised or rubbed the surface rapidly changes to fuscous or black, a feature separating the species from Polyporus adustus, with which it may be confused, since both possess a monomitic hyphal system, large hypha, and abundant clamp connections. P. curreyana differs, additionally, in being resupinate, possessing a pallid irregular margin, larger pores, different colour, and thinner walls of the generative hyphae.

Poria hunua G. Cunn. 1947

Beilschmiedia tawa (A.Cunn.) Hook.f. & Benth., on fallen fire-charred trunk. Auckland. Upper Wairoa Valley, Hunua Range, Sept. 1946, Joan Dingley, type collection. Suttonia salicina Hook.f., on rotting decorticated log.

Auckland. Arawhata Road, June 1946, Joan Dingley. Vitex lucens Kirk, on fallen decorticated decaying trunk. Auckland. Mangatangi Valley, Hunua Range, April 1946, Joan Dingley. Unknown Host, on fallen rotting log on forest floor. Auckland. Waitakere Ranges, 600 feet, Oct. 1930, M. Hodgkins.

Hymenophore effused, to 15 x 8 cm., 5-10 mm. thick, firm, dry and woody, at first white, drying cream or pallid yellow, sometimes tinted orange; surface even, not toothed, slightly glancing; margin tapering, irregular, concolorous, from 1 mm. to 10 mm. wide, byssoid. Pores obscurely stratose in old specimens, cream in section, round, to 8 mm. deep, 75-100 µ diameter, or 7-9 to mm.; dissepiments 30-100 µ thick, commonly 50 µ, apices acuminate, even or slightly velutinate. Context white, to 1 mm. thick, often 200 µ or less in old plants, hyphae loosely woven, not cemented, similarly arranged in dissepiments, crystals few and scattered; skeletal hyphae 2.5-5 µ thick, lumen 1 µ, hyaline, not staining, aseptate, sparsely branched; generative hyphae to 1.5 µ thick, delicate walled, branched, septate, contents staining, clamp connections present, scanty. Basidial type clavate, basidia elliptical or clavate, staining, 4-6 x 2-3 µ, soon collapsing. Spores allantoid, appreciably curved, 2.5-3 x 0.75-1 µ, smooth, hyaline.

New Zealand.

Hymenophorum ad 15 x 8 cm., 5-10 mm. crassum, firmum, album, demum cremeum vel pallide ochraceum. Pori rotundati, ad 8 mm. profundi, 75-100 µ diam.; dissepimenta 30-100 µ crassa. Contextus albus, 0.2-1 mm. crassus, textilis. Hypharum systema dimiticum. Hyphae skeletales sparse ramificatae, aseptatae, 2.5-3 µ crasse, lumine 1 µ; hyphae generatoriae 1.5 µ crassae, ramificatae, septatae, fibulatae. Typus basidialis clavatus. Sporae allantoideae, 2.5-3 x 0.75-1 µ, leves, hyalinae.

Hab.: Beilschmiedia tawa (A.Cunn.) Hook.f. & Benth. Auckland, Upper Wairoa Valley, Hunua Range, 250 m., specimen typicum.

Differentiated by the firm, dry, woody texture and light colour of the hymenophore, small pores with thin dissepiments, sparingly branched aseptate skeletal hyphae, and allantoid small spores. It somewhat resembles P.subacida Peck, but differs in the smaller pores, cream colour, spores (those of P.subacida being ovate, 3-4.5 x 3-4 µ), absence of cystidia and aseptate skeletal hyphae.
Poria manuka G. Cunn. 1947
Auckland. North slope of Mt. Tongariro, 2,500 feet, Jan. 1940, G.H.C. type collection; Same locality, 2,500-4,000 feet, Jan. 1947, G. H.C.; Banks of Oturere River, east slope of Mt. Tongariro, 2,500 feet, Dec. 1946, G.H.C.; Banks of Pangarara River, east slope of Mt. Tongariro, 3,000 feet, Dec. 1946, G.H.C.; Bank of Tongariro River, Kaimanawa Range, 2,000 feet, Dec. 1946, G.H.C.
Hymenophore effused, elliptical, to 4 x 1 cm., 0.25-1 mm. thick, firm, at first chalky white and translucent, becoming dingy cream, isabelline or sometimes reddish-brown when dry, waxy; margin not lifting, sharply defined, abrupt, 0.5 mm. or less in width, white, floccose, irregular; surface even, dissepiments not toothed. Pores round or slightly angular, not in strata, white or pallid cream in section, to 1 mm. deep, 100-250 µ diameter, 2-3 or 3-4 to mm., irregular in size and shape; dissepiments to 200 µ thick, somewhat thicker in old and young specimens, equal, of woven hyphae, apex tufted with a dense mass of hyphae. Context 100-200 µ thick, woven, white or pallid cream; generative hyphae hyaline, 3.5-4 µ thick, lumen about 1 µ, branched, septate, clamp connections and bridging hyphae abundant, swollen slightly at the septa. Basidial type merulioid, basidia clavate or subclavate, to 12 x 4 µ, cemented into a dense permanent palisade. Spores allantoid, appreciably curved, 5-6 x 1.5-2 µ, hyaline, smooth.
DISTRIBUTION: New Zealand.
HABITAT: Leptospermum scoparium Forst., on bark and wood of standing fire-killed stems and branches.
Hymenophorum ad 4 x 1 cm., 0.25-1 mm. crassum, firmum, album, demum cremeum cereamque. Pori rotundati vel leviter subangulati, 0.5-1 mm. profundi, 100-250 µ diam.; dissepimenta 100-200 µ crassa. Contextus 100-200 µ crassus, albus, textilis. Hypharum systema monomiticum. Hyphae generatoriae 3.5-4 µ crassae, ramificatae, septatae, fibulatae. Typus basidialis merulioideus. Sporae allantoideae, 5-6 x 1.5-2 µ, leves, hyalinae.
Characters of the species are the firm, usually cream-coloured waxy hymenophore, moderately thick though somewhat unequal dissepiments, thick-walled glassy hyphae of the context, merulioid basidial type and allanoid [sic] spores. The specific name has been taken from the Maori name of the host, upon which the fungus is common in the National Park.
Hab.: Leptospermum scoparium Forst. Auckland, Mt. Tongariro, 820 m., specimen typicum.
Poria novae-zelandiae G. Cunn. 1947

Metrosideros sp., on decorticated rotting log lying on the floor of tawa forest.

Auckland. Mt. Te Aroha, 2,600 feet, Nov. 1946, G.H.C., type collection.

Hymenophore effused, to 25 x 10 cm., 1-2 mm. thick, at first soft, fleshy, snow white, or cream where bruised, staining in patches, drying pallid cream or wood colour, hard and horny; often appearing as sterile sheets to 5 cm. wide; margin 1-2 mm., at first white becoming wood colour, lifting and strongly incurved when dry, irregular, byssoid; surface glancing, even, dissepiments not toothed. Pores not in strata, cream or isabelline in section, round or angular, 1-1.5 mm. deep, 50-100 µ mostly 50-60 µ diameter, or 7-9 to mm.; dissepiments 25-75 µ thick, commonly about 50 µ, equal, of parallel hyphae, apex slightly tapering, of parallel hyphae with rounded but not inflated ends, appearing slightly velutinate. Context 0.2-0.5 mm. thick, white or cream, of woven hyphae more dense near the substratum; skeletal hypha: 4-8 µ thick, wall to 2 µ, slightly staining, aseptate, sparsely branched; generative hyphae 2-2.5 µ thick, delicate walled, hyaline, not staining, branched, septate, clamp connections present. Cystidia to 50 x 10 µ, cylindrical, hyaline, encrusted with fine crystals, wall 1 µ, appearing both in context and dissepiments. Basidial type clavate, basidia cylindrical or subclavate, 8-10 x 3-4 µ, arranged in a dense palisade firmly cemented together. Spores elliptical, 2.5-3.5 x 1.5-2 µ, hyaline, smooth.
New Zealand.

Hymenophorum ad 25 x 100 cm., 1-2 mm. crassum, molle, siccitate corneum, album, siccitate cremeum. Pori rotundati vel angulati, 1-1.5 mm. profundi, 50-100 µ diam.; dissepimenta 25-75 µ crassa. Contextus albus vel cremeus, 0.2-0.5 mm. crassus, textilis. Hypharum systema dimiticum. Hyphae skeletales sparse ramificatae, aseptatae, 4-8 µ crassae, lumine 1-4 µ; hyphae generatoriae 2-2.5 µ crassae, ramificatae, septatae, fibulatae. Cystidia cylindrica, ad 50 x 10 µ, crystallis crustata. Typus basidialis clavatus. Spore ellipticae, 2.5-3.5 x 1.5-2 µ, leves, hyalinae.

Hab.: Metrosideros sp. Auckland, Mt. Te Aroha, 700 m., specimen typicum.

When fresh plants are soft and snow white; in drying they become hard and firm, and the colour changes to isabelline or wood brown. Characters of the species are the minute pores and thin dissepiments, presence of inflated cystidia with crystal-encrusted apex, and small elliptical spores. These are at times flattened on one face, though most are elliptical. Cystidia resemble somewhat those of P. eupora, but are more slender and the encrusting crystals are small and somewhat scattered.
Poria otakou G. Cunn. 1947
Nothofagus fusca (Hook.f.) Oerst., on bark of fallen branch.Otago. Kinloch, head of Lake Wakatipu, 1,250 feet, Jan. 1942, G.H.C., type collection
Hymenophore effused, to 8 x 3 cm., 1-2 mm. thick, fragile, dingy cream or isabelline, when dry dingy yellow; margin lifting, irregular, slightly inturned, cream, to 2 mm. wide, floccose; surface even, cracking, dissepiments not toothed. Pores not in strata, dingy cream in section, round or angular; irregular, 0.5-1 mm. deep, 250-500 µ diameter, or 2-5 to mm.; dissepiments 50-200 µ thick, equal, densely compacted, of parallel hyphae, margin slightly tapering, of parallel hyphae, with rounded ends, appearing finely velutinate. Context to 1 mm. thick, concolorous, loosely woven at the base, densely woven and forming a sclerotioid layer to 60 µ thick beneath the pores, crystals present; generative hypha 3-6 µ thick, thin-walled, septate, freely branched, clamp connections not seen, bridging hyphae numerous. Basidial type clavate, basidia clavate or cylindrical, to 12 x 4 µ, arranged in a dense palisade. Spores ovate, elliptical, or pip-shaped, 4.5-6 x 2-2.5 µ, hyaline, smooth.
New Zealand.
Hymenophorum ad 8 x 3 cm., 1-2 mm. crassum, fragile, cremeum, demum isabellinum. Pori angulati, irregulares, 0.5-1 mm. profundi, 250-500 µ diam.; dissepimenta 50-200 µ crassa. Contextus 0.5-1 mm. crassus, concolorous, sclerotioideus. Hypharum systema monomiticum. Hyphae generatoriae 3-6 µ crassae, ramificatae, septatae, haud fibulatae. Typus basidialis clavatus. Sporae ellipticae vel seminibus mali similis, 4.5-6 x 2-2.5 µ leves, hyalinae.
The irregular pores, colour of the hymenophore, sclerotioid layer of the context and delicate walls of the thick generative hyphae are the characters of the species.
Nothofagus fusca (Hook.f.) Oerst. Otago, Kinloch, 420 m., specimen typicum.
Poria oviformis G. Cunn. 1947

Nothopanax sp., on decorticated fallen branch. Auckland. Waitakere Ranges, Nov. 1945, Joan Dingley, type collection.

Hymenophore oviform, discrete, to 7 x 3 cm., 1-2 mm. thick, firm, with several orbicular or oviform outlying islands, white, becoming cream or pallid isabelline when dry; margin 1-3 mm. wide, definite, even, cream, byssoid, nearly smooth, not lifting; surface even, slightly glancing, dissepiments not toothed. Pores not in strata, round or slightly angular, in section cream, 0.5-2 mm. deep, 60-200 µ diameter, or 3-4 to mm.; dissepiments 50-200 µ thick, of closely woven mainly parallel hyphae, apex tapering, not tufted. Context 0.2-1 mm. thick, of closely woven hyphae, more dense beneath the hymenium, not cemented, crystals present ; skeletal hyphae to 3.5 µ thick, lumen 1 µ, slightly staining, aseptate, branched near ends, sometimes freely, occasionally irregularly nodose; generative hyphae to 2 µ thick, delicate walled, branched, septate, clamp connections present. Basidial type clavate, basidia clavate, 10-12 x 5-6 µ, soon collapsing. Spores broadly elliptical, oblong, ovate, truncate or angular, 5-6 x 3.5-4 µ, smooth, hyaline, abundant, staining deeply.
New Zealand.
Macroscopic features resemble those of a North American collection (ex J.R.Weir, Idaho, No. 11,666) of P. cinerescens. The species differs in the dimitic hyphal system, different skeletal hyphae and spores, those of P. cinerescens being allantoid and 4.5-5 x 1 µ. It also somewhat resembles P. illudens, differing mainly in the peculiar spores.
Poria rata G. Cunn. 1947
Hymenophore to 8 x 4 cm., 6-10 min. thick, firm, horny, hard, wood-coloured when dry; margin tapering, irregular, to 2 mm wide, floccose, not lifting, cream coloured; surface even, compact, dissepiments not toothed. Pores wood-coloured in section, stratose, round or slightly angular, to 4 mm. deep, each layer separated by a black line 0.5 mm. thick, 50-150 µ diameter, or 7-9 to mm.; dissepiments 30-100 µ thick, apex tapering, appearing as a firm even layer, of cemented parallel hyphae, not velutinate. Context to 0.8 mm. thick, thinner when old, white or isabelline, hyphae parallel or slightly woven, passing unchanged into the dissepiments; skeletal hypha 3-4 µ thick, thick-walled, lumen often almost obliterated, hyaline, aseptate, sparsely branched near ends, irregular; generative hyphae to 2 µ thick, branched, septate, thin-walled, clamp connections present. Basidial type clavate, basidia clavate, to 10 x 4 µ, soon collapsing. Spores ovate, elliptical, or pip-shaped, 3.5-4 x 2-2.5 µ, smooth, hyaline.
New Zealand.
Metrosideros robusta A.Cunn., on decorticated fallen trunk lying on the forest floor.

Hymenophorum ad 8 x 4 cm., 6-10 mm. crassum, firmum, siccitate corneum nebulosumque. Pori stratosi, rotundati, ad 4 mm. profundi, 50-120 µ diam.; dissepimenta 30-100 µ crassa. Contextus albus vel isabellinus, 0.6-0.8 mm. crassus, textilis. Hypharum systema dimiticum. Hyphae skeletales sparse ramificatae, aseptatae, 3 µ crassae, lumine 0.5 µ; hyphae generatoriae 2 µ crassae, ramificatae septatae, fibulatae. Typus basidialis clavatus. Sporae ovatae vel late ellipticae, 3.5-4 x 2-2.5 µ, leves, hyaline.

Hab.: Metrosideros robusta A.Cunn. Wellington, Ngatamoti, Ruahine Ranges, 950 m., specimen typicum.

Characters of the species are the firm, horny, wood-coloured hymenophore (when dry), stratose minute pores with layers differentiated by a black line, thin dissepiments, aseptate sparsely branched skeletal hyphae with almost obliterated lumen, clavate basidia and small ovate or elliptical spores. The specific name is taken from the Maori name applied to the host.
Wellington. Ngatamoti, Ruahine Ranges, 2,800 feet, Jan. 1933, J.G.Gibbs, type collection.

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