PDD 30664 – Russula umerensis McNabb
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 30664
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 umerensis
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula umerensis McNabb
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Russulales
Family:
Russulaceae
Identification type:
Determination
Type status:
Holotype
Associations:
has host Nothofagus menziesii (Hook.f.) Oerst.
Substrate:
ground
Other components
Active identification
Determined name:
Nothofagus menziesii (Hook.f.) Oerst.
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:
Karamea, Umere
Georeferences:
Latitude and Longitude (WGS84):
-41.2623 172.175
Verbatim locality:
Karamea, Umere
Verbatim collector:
R.F.R. McNabb, R.J. McNabb
Standardised collector:
Robert F. R. McNabb; R. J. McNabb
Collectors reference no.:
RFRM 166 (Russula)
Verbatim date:
1969/01/02
Start date:
1969-01-02
New Zealand Area Codes:
Nelson
Country:
New Zealand
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:
2440860E 5993470N (WGS84 -41.262498 172.175117)
Specimen notes
Public Note:
[McNabb:] #165, 238, 226, 219, 189, 167, 237, 166 (Holotype), 226, 237, 238 PILEUS: 8 cm diam., rather water-soaked but colours pinkish red, slightly greenish etc. GILLS: white, crowded, lamellulae absent. STIPE: pure white, 4cm long, more or less equal, 1-1.5cm diam., HABITAT: solitary under Nothofagus menziesii, Nelson, Karamea, Umere, 2.1.1969, Coll. R.F.R. McNabb & R.J. McNabb. Cuticle 150-200um thick, composed of hyaline, thin-walled, septate hyphae 2-5um diam., without coloured contents, terminal cells unspecialised, interwoven, +- obliquely ascending. Pilocystidia thin-walled, contents refractive in KOH, 3.5-6.5um diam., +- subclavate, apices +- bluntly acuminate, occasionally septate, to 100um long. Cuticle tending to become disorganised with age and partially gelatinised. Cuticle of stipe composed of interwoven repent hyaline, thin-walled, septate hyphae 2-5um diam., caulocystidia numerous, +- subclavate, contenst refratcive in KOH, similar to pilocystidia. Spores broadly elliptical, obliquely apiculate, apiculus to 1.5um long. 7.7-9.8 x 7-8.4um. Ornamentation moderately dense, of amyloid verrucae to 0.7um high, isolated or joined by fine amyloid ridges and forming a partial reticulum, plage distinct. Cheilocystidia sparse, similar to pleurocystidia but shorter. Basidia hyaline, clavate, 4-spored sterigmata to 5.5um long, 38-53 x 9.8-11.9um. Pleurocystidia scattered, relative numerous, projecting to 20um beyond basidii, hyaline thin-walled, contents rather sparse and not particularly refractive in KOH, +- fusiform or clavate to subclavate, apices bluntly acuminate, 49- 78 x 7.7 – 10.5um. [Ridley:] Basidiospores 7.25-9.25 x 6.25-7.25 um [7.5-10 x 7-85 um] Qm 1.24, broadly ellipsoid, Q 1.16-1.30, broadly ellipsoid, hyaline. Ornamented with moderately crowded, amyloid verrucae to 0.75 um high, single or in small confluent groups, joined by low, fine amyloid ridges forming a partial reticulum. Suprahilar plage distinct very slightly roughened and raised, very weakly amyloid c. 2.75 um wide. Hilar appendix obconical, oblique, to 2.25 um long. (Fig. 27f). Under the light microscope the plage was seen to be weakly amyloid. In the SEM it it appeared as a slightly raised are with a few central flakes. The ornamentation was type IIB. [Cooper:] DCYs visible in SV but not staining, SV-ve. purple granules present, like R. tawai. No fuchsinophile granules seen. Plage clear and with violet amyloid spot. Spores length=7.5–9.2µm (µ=8.2, σ=0.4), width=5.8–7.7µm (µ=6.5, σ=0.4), Q=1.1–1.4µm (µ=1.26, σ=0.07), n=20, ornamentation to 1um.
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