PDD 30654 – Russula griseostipitata McNabb
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 30654
Type status:
Holotype
Specimen type:
Packet
Database record added:
11 April 2011
Database record updated:
24 February 2023
Components
Primary component
Active identification
Determined name:
Russula griseostipitata
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula griseostipitata McNabb
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Russulales
Family:
Russulaceae
Identification type:
Determination
Type status:
Holotype
Associations:
has host Nothofagus fusca & Nothofagus menziesii
Substrate:
ground
Other components
Active identification
Determined name:
Nothofagus fusca & Nothofagus menziesii
Determiner:
Identification date:
Preferred name:
Fuscospora fusca
Division:
Tracheophyta
Class:
Magnoliopsida
Order:
Fagales
Family:
Nothofagaceae
Identification type:
Determination
Present:
no
Collection events
Primary collection event
Collection event type:
Unknown
Standard locality
Location:
Maruia
Georeferences:
Latitude and Longitude (WGS84):
-42.0477 172.239
Verbatim locality:
Maruia
Verbatim collector:
R.F.R. McNabb
Standardised collector:
Robert F. R. McNabb
Collectors reference no.:
RFRM 117 (Russula)
Verbatim date:
1968/01/21
Start date:
1968-01-21
Country:
New Zealand
New Zealand Area Codes:
Buller
Native lands:
Ngāi Tahu
Ngāti Toa Rangatira
Georeferences:
New Zealand Map Grid:
2445580E 5890540N (WGS84 -42.189556 172.220119)
Specimen notes
Public Note:
[McNabb:] includes 116 (K8), 117(holotype, m35 painting), 118, 130 (group 26, k15 painting), 141, 148, 164, 283? , 284?, 290? , 336. PILEUS: 6cm diam., centrally depressed, slightly viscid in wet weather, margins slightly sulcate-ribbed for up to 1cm, brownish with what appears to be whitish velar remnants in centre, c 11D3-C3 for most part, i.e. with dull reddish tints. GILLS: dull greyish white, crowded, simple or forked at any point between stipe and margin, to 6mm deep, lamellulae occas. present, not in sequence, adnate. STIPE: 5cm long, tapering basally, 1.8cm diam. Apically, 1.4 cm diam. Basally, solid, smooth, dry, annulus absent, innately longit. stretched reticulate under lens, dull greyish white with faint plum tints, flsh white. CONTEXT: brownish white, unchanging. TASTE: gills and context – not distinctive. CHEMICAL CHARACTERS: formalin – n.r, Phenol – slowly deep vinaceous; FeSO4 – immed salmon deep pink. Guiaiacol on stipe base – immed salmon pink, darkening to bright brick red. KOH on pileus – darkening. KOH on context – n.r. NH4OH on pileus and context – n.r. HABITAT: solitary under Nothofagus menziesii, Nelson, Karamea, Umere, 6.1.1968, Painting K8. Cuticle composed of interwoven, thin walled, tinted, septate hyphae, possibly faintly gelatinised, 2.5-4um diam, no indications of pilocystidia present. Terminal cells unspecialised, not projecting. Hymenophoral trama intermixed, no differentiation into mediolateral stratum. Cuticle of stipe composed of hyaline, interwoven hyphae, septate, thin-walled 2.5-4um diam., terminal cells unspecialised, occ. aggregated, projecting. No indications of caulocystidia with refractive content. Pleurocystidia not numerous, scattered projecting to 25um beyond basidia, hyaline, thin-walled. Contents granular, refractive in KOH, broadly fusiform with mucronate, acuminate or occ. strangulated apices, 60-82 x 6.8 - 10.5um. Basidia clavate, hyaline, 4-spored, sterigma to 7um long, 38-60 x 7.5-10.5um, cheilocystidia present on gill edge, rel. insignificant, filamentous, not specialised, to 3um diam. Spores +- broadly elliptical, prominently obliquely appilculate, apiculus to 2-(2.5)um long, ornamentation of low, isolated verrucae to 0.5um high, occ. joined in groups of 2-5 but rather infrequently, plage area indistinctive. 8.2-10.5 x 6-7.5um. [Ridley:]Basidiospores 7.25-8.5 x 5.25-6 su, [7.5-9.5 x 6-7.75 um] Qm 1.42, ellipsoid, Q 7.33-1.52, ellipsoid, hyaline. Ornamented with moderately crowded, amyloid obtuse verrucae to 0.5 um high, mostly single, rarely in confluent groups, joined by an occasional fine, low, amyloid ridge, forming no discernible pattern. Suprahilar plage distinct very weakly amyloid, c. 2 um wide. Hilar appendix obconical, oblique, to 2 um long. (Fig. 28f). The plage was originally described as absent however under the light microscope it appeared quite distinct, and was very weakly amyloid. The ornamentation was of type IV. [Cooper:]The dried material does not show the vertical stem ribs. DCY SV-ve. Cap has numerous thin acuminate hairs and a few short cystidia. Fuchsinophile hyphae not seen. Spores show a plage and very weak amyloid spot. Spores length=6.0–7.8µm (µ=7.0, σ=0.4), width=4.8–6.6µm (µ=5.8, σ=0.5), Q=1.1–1.4µm (µ=1.2, σ=0.1), n=20, ornamentation to 0.5um. How did McNabb miss the acuminate cap hairs? The gill macrocystidia are difficult to see clearly. Ridley has 7.25-8.5 x 5.25-6, Q=1.42. (we disagree on Q and width). McNabb's notes (for 116 identical to 117) says lamellulae occasionally present. They were not found in the dried material.
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