PDD 30656 – Russula pilocystidiata McNabb
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 30656
Type status:
Holotype
Specimen type:
Packet
Database record added:
06 June 2001
Database record updated:
24 February 2023
Components
Primary component
Active identification
Determined name:
Russula pilocystidiata
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula pilocystidiata McNabb
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Russulales
Family:
Russulaceae
Identification type:
Determination
Type status:
Holotype
Associations:
has host Nothofagus menziesii
Substrate:
ground
Other components
Active identification
Determined name:
Nothofagus menziesii
Determiner:
Identification date:
Preferred name:
Lophozonia menziesii (Hook.f.) Heenan & Smissen
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:
Oparara, Fenian Track
Georeferences:
Latitude and Longitude (WGS84):
-41.2018 172.178
Verbatim locality:
Oparara, Fenian Track
Verbatim collector:
R.F.R. McNabb
Standardised collector:
Robert F. R. McNabb
Collectors reference no.:
RFRM 135 (Russula)
Verbatim date:
1968/01/09
Start date:
1968-01-09
Country:
New Zealand
New Zealand Area Codes:
Nelson
Native lands:
Ngāi Tahu
Ngāti Apa ki te Rā Tō
Ngāti Rārua
Ngāti Toa Rangatira
Te Atiawa o Te Waka-a-Māui
Georeferences:
New Zealand Map Grid:
2440480E 6000140N (WGS84 -41.202417 172.171351)
Specimen notes
Public Note:
[McNabb:] Holotype 135 (group34), also 79, 80, 84, 85, 90, 95a, 158, 171, 188. PILEUS: purplish, gills white, stipe reddish-purple. HABITAT: solitary under Nothofagus menziesii, Nelson: Oparara, Feenian, 9.1.1968. R.F.R. McNabb. Cuticle of pileus a distinct palisade of pilocystidia and terminal cells. Terminal cells hyaline, thin-walled +- acuminate, arising from ascending septate hyphae. Pilocystidia numerous, intermixed, with refractive content in KOH, variously shaped but often subclavate, +- cylindrical, or broadly fusiform with mucronate apices, 5-10um diam., 40-100um long, arising from rather inflated hyphae as in case of terminal cells but not from sphaerocyst layers. Cuticle of stipe of hyaline, thin-walled, septate hyphae 2.5-4um diam., parallel to interwoven, aggregated in places, terminal cells projecting, also caulocystidia in the aggregations similar to those on pileus. Basidia hyaline, clavate, 4-spored 36-45 x 10.5-12.8um. Pleurocystidia relatively numerous, scattered projecting to 40um beyond basidia, smaller nearer gill edge, broadly fusiform with acuminate or capitulate apices, with refractive contents in KOH, walls slightly thickened, (not as thick as R. macrocystidiata) 60-87(-100) x 7.7-13.5um. Gill edge contains numerous rather short pleurocystidia but no specialised cheilocystidia. Spores elliptical to ovate, obliquely apiculate, to 1.5-(2(um long, 9-10.5 x 7.5-9um. Ornamentation of flat-topped verrucae to 1.5um high, amyloid, dense, isolated in groups 2-3, or joined by moderately heavy amyloid ridges forming an incomplete reticulum. Plage area ornamentation slightly less projecting. Pleurocystidia slightly thick-walled but not as thick as in R. macrocystidiata. Spores 9.1-10.5 x 7.7-9.1um, ornamented spines amyloid or partially inamyloid, joined by moderately coarse bands. Plage conspicuous. [Ridley:] Basidiospores 7.25-8.25 x 5.5-6.25 um, [9-10.5 x 75-9 um] Qm 1.28, broadly ellipsoid Q 1.15-1.36, broadly ellipsoid to ellipsoid, hyaline. Ornamented with crowded, partially amyloid to amyloid, acute verrucae, truncate spines and crests, 1-1.5 um high, single or in confluent groups forming nodulated bands, joined by fine, amyloid ridges, the whole configuration forming a partial reticulum. Suprahilar plage inamyloid or very weakly amyloid, roughened, c. 2.75 um wide. Hilar appendix obconical, oblique, to 2 um long. (Fig. 27e). The plage was conspicuous as it was well defined by the ornamentation and was inamyloid or very weakly amyloid under the light microscope. In the SEM it appeared roughened which may cause the retention of the myxosporium, or it may be the myxosporium flaking away. Ornamentation was type IIIB. [Cooper:] Holotype cap purplish, gills white, stipe reddish-purple. This has the purple furfuraceous hyphae on stem. Does not appear to have sub-cuticular pigment. Cap SV+ve, but weakly so. No spore print. Long cap cystidia only present near centre. Long pilocystidia septate, not acuminate. With short cystidia in addition. This presence of two clear elements in the cap is unlike other McNabb species. Neither type of cap cystidium arises from spherical basal cells. There is no layer of sphaerocysts - like multicystidiata, from which it is clearly distinguished in this respect. None of the macrocystidia are thick-walled.Spores (in KOH) length=7.1–7.7µm (µ=7.4, σ=0.2), width=5.6–6.4µm (µ=6.0, σ=0.2), Q=1.2–1.3µm (µ=1.24, σ=0.05), n=9, ornamentation to 1.1, in melzers length=7.5–8.6µm (µ=8.0, σ=0.2), width=5.9–6.9µm (µ=6.5, σ=0.2), Q=1.1–1.3µm (µ=1.23, σ=0.06), n=20.
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