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Trametes tawa G. Cunn. 1948

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Trametes tawa G. Cunn. 1948

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G. Cunn.
G. Cunn.
1948
9
ICN
Trametes tawa G. Cunn. 1948
NZ holotype
species
Trametes tawa
Otago, Woodlaw State Forest, type collection, P.D.D. herbarium, No. 4822.

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Trametes tawa G. Cunn. 1948

Beilschmiedia tarairi (A.Cunn.) Benth. & Hook.f. Auckland. Near Alfriston, Sept. 1941, Joan Dingley. Beilschmiedia tawa (A.Cunn.) Hook.f. & Benth. Auckland. Waitomo, 400 feet, Aug. 1946, G.H.C.; Little Barrier Island, Nov. 1947, Joan Dingley. Coprosma sp. Auckland. Whakarewarewa, May, 1947, G.B.Rawlings. Dysoxylum spectabile (Forst.f.) Hook.f. Auckland. Te Moehau: Coromandel, 600 feet, Jan. 1941, Joan Dingley. Nothofagus cliffortioides (Hook.f.) Oerst. Wellington. Butterfly Reserve, May 1946, G.B.Rawlings. Pittosporum sp. Southland. Woodlaw State Forest, Nov. 1946, G.B.Rawlings, type collection.
Hymenophore annual, dimidiate, often imbricate, coriaceous. Pileus conchate, or applanate, often effused-reflexed, or as frequently attached by a narrow base, when gibbous, 1-3 cm. x 1-2 cm. x 1-3 mm.; sometimes resupinate when to 11 cm. x 2 cm.; surface at first cream, zoned and almost smooth, soon becoming bay-brown, sometimes reddish-brown, azonate, coarsely strigose, hairs often adpressed and somewhat radiately arranged, somewhat scrupose at the base, cuticle absent; margin bluntly rounded, even, concolorous; hymenial surface ochraceous, bay-brown, ferruginous, or chestnut-brown, even, sterile border lighter in colour, l-2 mm. wide, finely velutinate, dissepiments not toothed. Context 0.5-1 cm. thick, bay-brown or chestnut-brown, vaguely zoned; skeletal hyphae 5-6 µ thick, lumen 1-2 µ, sparsely or not branched, aseptate, tinted yellow or chestnut-brown; binding hyphae 3.5-4 µ thick, lumen 1 µ, branched, aseptate, tinted yellow; generative hyphae 2-3 µ thick, delicate walled, septate, branched, hyaline. Pores angular or round, ferruginous in section, 100-150 µ diameter, or 5-6 per mm., sometimes to 2 mm. long; dissepiments 50-100 µ thick, equal, apex finely velutinate. Cystidia tinted yellow, to 140 µ long, 6-10 µ diameter, wall 2 µ, sparse, encrusted save at apices. Basidia clavate, 10-14 x 4-5 µ. Spores elliptical, a few slightly allantoid, 2.5-3.5 x 1.5-2 µ, smooth, hyaline.
DISTRIBUTION: New Zealand.
HABITAT: Growing usually imbricate, sometimes resupinate, upon bark of dead upright branches, associated with a white rot.
Hymenophorium annum, dimidiatum, saepe imbricatum, coriaceum. Pilei conchati vel applanati, saepe effuso-reflexi, vel saepe si quibbosus basi angustato fixi, 1-3 cm. x 1-2 cm. x 1-3 mm., interdum resupinati si ad 11 cm. x 2 cm.; superficies primo cremea, zonata fere zaevigataque, mox badia interdum testacea, azonata, crasse strigosa, pilis saepe appressis aliquantum radiatim dispositis, basi aliquantum scruposis, cuticula absens; margo obtuse rotundatus, aequus, concolorus; superficies hymenialis ochraceus, badius, ferrugineus, vel castaneus, aequus, margo sterilis pallidior, 1-2 mm. latus, subtiliter velutinatus, dissepimentis haud dentatis. Contextus 0.5-1 cm. crassus, badius vel castaneus, ambigae zonatus; hyphae skeletales 5-6 µ crassae, lumen 1-2 µ, sparse vel vix brachiatum, aseptatum, flavo-tinctum vel castaneum, hyphae genitales 2-3 µ crassae, muris teneribus, septatae brachiatae, hyalinae. Pori angulati vel rotundati, sectione ferruginei, 100-150 µ diam. vel 5-6 per mm., interdum ad 2 mm. longi, dissepimenta 50-100 µ crassa, aequa, apicibus tenuiter velutinata. Cystidia flavo-tincta ad 140 µ longa, 6-10 µ diam., muris 2 µ crassis, sparsa, encrustata apicibus exceptis. Basidia clavata 10-14 x 4-5 µ. Sporae ellipticae, paucae aliquantulum allantoideae, 2.5-3.5 x 1.5-2 µ, laevigatae, hyalinae.
Fresh plants possess a pleasant odour resembling face powder. An unusual feature is the presence of large hyaline or tinted cystidia. They resemble those of Poria eupora, attain a length of 140 µ, diameter of 10 µ and, save at the apex, are encrusted with crystals. It is probable that records of the presence in New Zealand of Polyporus pargamenus Fr. and P. pinsitus Fr. (Colenso 1886, p. 303; 1895, p. 614) were based on this species. Both differ, however, in configuration of the hymenium, spores, and different cystidia.
Pittosporum sp. Southland. Woodlaw State Forest, Nov. 1946, G.B.Rawlings, type collection.

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Trametes tawa G. Cunn. 1948
Trametes tawa G. Cunn. (1948)

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Trametes tawa G. Cunn. 1948
New Zealand
Southland

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typification
Otago, Woodlaw State Forest, type collection, P.D.D. herbarium, No. 4822.

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1cb1b991-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
26 September 2019
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