PDD 30624 – Russula griseobrunnea McNabb
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 30624
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 griseobrunnea
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula griseobrunnea 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:
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 124 (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:] Includes 121 (painting k34, group 32), 124 (holotype, k19), 149 (painting), 150, 162, 211, 227, 242, 248, 250, 267, 87 (pdd26542 - type of griseolutea ined., book 2 pg97) photo, 282 (PDD29447), 320 (PDD26931). PILEUS: to 8cm diam., deeply infundibuliform at maturity, slightly viscid, smooth, innately pruinose under lens, dark brownish grey or greyish brown, margins entire, not marked. GILLS: crowded, creamy yellow, to 4mm deep, adnate to decurrent, lamellae simple, occ. Forked near stipe, not near margins, lamellae occ. Present. STIPE: to 4cm long, more or less equal or tapering basally, to 1.6cm diam. apically, dry, annulus absent, smooth, faintly innately pruinose under lens, solid, concolorous with pileus or slightly paler. Flesh pallid greyish when cut, turning slowly darker greyish over 20 minutes. CONTEXT OF PILEUS: same as stipe. TASTE: gills and context – not distinctive. CHEMICAL REACTIONS: Formalin – n.r., Phenol – slowly deep vinaceous, FeSO4 – very pallid salmon pink; guaiacol on stipe base – immed. salmon, darkening to brick-red; KOH on pileus – darkening; on context – n.r. NH4OH on pileus – darkening; on context – n.r. HABITAT: solitary or in 2’s under Nothofagus menziesii, Nelson, Oparara, Feenian, 9.1.1968. Coll. R.F.R. McNabb. ILLUSTRATIONS: (K19) Painting. SPORE PRINT: almost pure white when fresh. Cuticle of pileus composed of interwoven, obliq. ascending hyphae, with dark brown contents, slightly thick-walled, septate, 3.5-6.5um diam., terminal cells unspecialised. Intermixed with numerous pilocystidia with granular refractive content, originating from deep within context, 5-8um diam., often strangulated or capitulate apically, typically tapering apically. Hymenophoral trama intermixed, subhymenium cellular, of smaller cells, closely compacted. Cuticle apparently slightly gelatnised. Pilocystidia 70-112 x 5-8um. Basidia subclavate to irreg. subclavate, not strictly clavate, hyaline, 4-spored, sterigmata to 7um long, 44-63 x 7.5-10um. Pleurocystidia scattered, numerous, sometimes crowded & projecting to 40um beyond basidia, broadly fusiform with acuminate or apiculate apices, or strangulated for entire length, or subclvate with capitulate or acuminate apices, hyaline, thin-walled, contents refractive in KOH 60-112 x 5.5 - 10.5um. No distinct cheilocystidia seen but the pleurocystidia are smaller near the gill edge. Spores broadly elliptical to obovate obliquely apiculate, apiculus to 1.5(-2) um long. 8.2-11.2 x 6-8.2um. Ornamentation of amyloid ridges and verrucae to 0.5um high, isolated or joined by very fine amyloid ridges to form and incomplete reticulum. Plage not distinctive. Cuticle of stipe composed of a thin layer of interwoven hyphae with very dark brown contents in KOH, terminal cells often projecting obliquely unspecialised. caulocystidia numerous, intermixed, with refractive contents in KOH, interwoven with brown hyphae, ends often projecting similar to those of pileus, often broader to 12um. [Ridley:] Basidiospores 7.25-9.25 x 6-8 um, [7-9 (-10.5) x 6-8 um] Qm 1.19, Q 1.15-1223, broadly ellipsoid hyaline. Ornamented with moderately crowded, obtuse, amyloid verrucae to 0.75 um high, in confluent groups, Fined by fine, amyloid ridges, forming a partial reticulum. Suprahilar plage inconspicuous smooth, lnamyloid, c. 2.75 un wide. Hilar appendix obconical, oblique, w 1.25 um long. (Fig. 26a). The light microscope observations agreed with the original description. The material however was in poor condition for the SEM, and the precise nature of the plage was not determined. The ornamentation was type IIIB. [Cooper:] Note the narrow basidia. DCY SV-ve (unlike current description: beware hyphae with brown content), just like R. inquinata (but this fruitbody not blackening). The cap has hairs with brown content and hyaline refractive cystidia. Fuchsinophile granules not seen. Plage distinct, amyloid spot absent. Spores from print length=7.0–8.5µm (µ=7.7, σ=0.4), width=5.5–6.9µm (µ=6.1, σ=0.4), Q=1.1–1.4µm (µ=1.3, σ=0.1), n=20. Ridey has 7.25-9.25 x 6-8, Q=1.19. I have a higher Q. McNabb's notes on the type indicate 'lamellulae occasionally present' (?), but the dried material does not show them. His notes on the lamellulae for paratypes vary - a lot.
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