New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa

PDD 26574

Holotype

Packet

11 April 2011

24 February 2023

Russula pudorina

R.F.R. McNabb

Russula pudorina McNabb

Basidiomycota

Agaricomycetes

Russulales

Russulaceae

Determination

Holotype

has host Leptospermum scoparium

ground

Leptospermum scoparium

Leptospermum scoparium J.R.Forst. & G.Forst.

Tracheophyta

Magnoliopsida

Myrtales

Myrtaceae

Determination

no

Unknown

Titirangi, Atkinson Park

Latitude and Longitude (WGS84):  -36.942330  174.657734 

Titirangi, Atkinson Park

R.F.R. McNabb

Robert F. R. McNabb

RFRM 55 (Russula)

1967/04/04

1967-04-04

New Zealand

Auckland

Ngāti Tamaoho

Ngāti Tamaterā

Ngāti Whātua

Ngāti Whātua o Ōrākei

Te Ākitai Waiohua

Te Kawerau a Maki

New Zealand Map Grid:  2658010E 6471520N  (WGS84 -36.946265 174.657607)

[McNabb:] holotype = #55 (group 7, originally as roseotincta). same as #18, 62. PILEUS; 2.8 cm diam., centrally depressed, glabrous, no indications of velar remnants, dry, slightly pruinose under lens, greyish-red, (c 12D3-4, 12C3-4, 11C3). Margins entire, not radially ridged and grooved. GILLS: moderately crowded and mod. thick, pallid creamy-white, not discoloured at maturity, lamellae simple, not forked, lamellulae absent, to 4 mm deep. STIPE: 2,2 cm long, more or less equal, 6 mm diam., solid, dry, faintly sub- pruinose under lens, annulus absent, no indications of velar remnants, pallid greyish-pink, (c 11B2-3), extreme base white, Flesh white, unchanging. CONTEXT OF PILEUS: white, unchanging. SMELL: not noted. TASTE: gills and context extremely bitter not sharply acrid. SPORE PRINT; not obtained. CHEMICAL REACTIONS; Formalin on context - no reaction Phenol on context - slowly deep red, vinaceous. FeS04 on context - rapidly pallid salmon pink. KOH and NH40H on pileus and context - no reactions. HABITAT: solitary under Leptosperma ericoides. Titirangi, Atkinson Park 4/4/67, Coll. R.F.R. McNabb. COLOUR PHOTO. Cuticle as in preceding collection (#62= cuticle consist of ‘hairs’ arising from the outermost cells of a layer of +- isodiametric cells, i.e. a cellular layer. Cells of this layer c 5-8 cells deep, without distinctive content in KOH. Outer cells protracted into hairs c 75 um long, septate sparingly, without distinctive contents in KOH, apically rounded or acuminate, or only rarely slightly inflated c 3-6um diam. These hairs project +- at right angles to the surface but in places disorganised. Hairs thin-walled, hyaline in KOH, simple or very occasionally 1-branched basally ). Epicutis consisting of thin-walled rather short hairs arising from the outer cells of a layer of +- isodiametric cells, i.e. a cellular layer. Hairs not, or only slightly inflated, to 5.5um diam., to 50um long, septate, apically rounded or acuminate, simple or occasionally 1-branched basally, hairs forming a +- erect palisade. Arising from inflated short-celled hyphae and sphaerocyst-like cells. Hairs to 100um long and 4-6.5um diam., Context heteromerous, composed of filamentous septate hyaline hyphae and sphaerocysts but the latter not conspicuously in ‘nests’. Spores subglobose occasionally broadly obovate obliquely apiculate, apiculus to 2u long, 8.1 – 9.8 x 7.1 -8,.8um. Ornamentation of flat-topped verrucae to 0.75um high, frequently adjacent ones joined by broad or narrow amyloid lines forming an incomplete reticulum and degree of reticulation quite variable. Pleurocystidia numerous scattered, projecting to 50um beyond basidia, arising from deep within trama, thin-walled, hyaline, content usually absent, apart from some refractive material at apex (in KOH), fusiform, inflated fusiform, 58-96 x 11-16.2 um. Basidia stout, clavate, 4-spored, sterigmata to 7um long 35-48 x 9.8 – 13.6um. Hymenium composed of basidia, pleurocystidia and occasionally simple cylindrical to subclavate hyaline septate dikaryophyses, rather sparse. Cheilocystidia present on gill edge, numerous but except for being shorter, are not greatly different from the pleurocystidia. Covering of the stipe consisting of hairs arising at right-angles or obliquely from a layer of +- parallel hyphae. Hairs unspecialised thin-walled, septate, hyaline, apices acuminate, rounded, terminal cells rarely or not inflated, to 45um long, 3-3.5 um diam., hairs often aggregated rather than continuous over surface. Spores broadly ellipsoid to obovate, obliquely apiculate, apiculus to 1.5(-2) um longn 8-9.5 x 7.5 – 8.5um. Ornamentation of fine dense amyloid verrucae to 0.6um high, typically joined by fine to moderately fine amyloid ridges forming an incomplete or almost complete reticulum, plage inconspicuous. [Ridley:] Basidiospores 8-8.5 x (6.5)7.25-8 um, [8-10.5 x 7-9 um] Qm 1.09, subglobose, Q 1.00-1.17(-1.23), globose to broadly ellipsoid, hyaline. Ornamented with moderately crowded, amyloid, obtuse verrucae, 0.2-0.5um high, mostly in small confluent groups joined by low, moderately fine to coarse, amyloid ridges, forming a partial reticulum. Suprahilar plage distinct amyloid, smooth and slightly raised, c. 2.75 um. Hilar appendix obconical, oblique, to 1.75um long. (fig.28e). Under the light microscope the plage was distinct and amyloid. In SEM it appeared as a slightly raised area outlined by the general ornamentation. The ornamentation was type IIB. [Cooper:] Stem with magenta fibrils. Fruitbody is noticeable small. Without lamellulae, with fine basal interveining. Cap with pink sub-cutis. Cap shows felted area in centre. SV-ve. Cap hairs not obvious in cap section. Hairs very obvious in squash, to 100um long, septate, with occasional and sparse refractive content. The gill edge (where observed) appears to have much thinner macrocystidia long with the broad ones seen by McNabb. No spore print. With plage and strong amyloid spot. Spores length=7.4–8.7µm (µ=8.0, σ=0.3), width=6.9–7.6µm (µ=7.2, σ=0.2), Q=1.0–1.2µm (µ=1.11, σ=0.04), n=20, ornamentation to 0.5um