PDD 26627 – Russula acrolamellata McNabb
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 26627
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 acrolamellata
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula acrolamellata McNabb
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Russulales
Family:
Russulaceae
Identification type:
Determination
Type status:
Holotype
Associations:
has host Leptospermum ericoides
Substrate:
ground
Other components
Active identification
Determined name:
Leptospermum ericoides
Determiner:
Identification date:
Preferred name:
Kunzea ericoides (A.Rich.) Joy Thomps.
Division:
Tracheophyta
Class:
Magnoliopsida
Order:
Myrtales
Family:
Myrtaceae
Identification type:
Determination
Present:
no
Collection events
Primary collection event
Collection event type:
Unknown
Standard locality
Location:
Titirangi, Atkinson Park
Georeferences:
Latitude and Longitude (WGS84):
-36.942330 174.657734
Verbatim locality:
Titirangi, Atkinson Park
Verbatim collector:
R.F.R. McNabb
Standardised collector:
Robert F. R. McNabb
Collectors reference no.:
RFRM 13 (Russula)
Verbatim date:
1967/02/13
Start date:
1967-02-13
Country:
New Zealand
New Zealand Area Codes:
Auckland
Native lands:
Ngāti Tamaoho
Ngāti Tamaterā
Ngāti Whātua
Ngāti Whātua o Ōrākei
Te Ākitai Waiohua
Te Kawerau a Maki
Georeferences:
New Zealand Map Grid:
2658010E 6471520N (WGS84 -36.946265 174.657607)
Specimen notes
Public Note:
[McNabb:] 13 (holotype), 6, 21, 22, 32, 36, 41, 56, 97, 101, 102, 107, 113, 312-4? (McNabb's cards missing except holotype). PILEUS: 4.5-6.5 cm diam., infundibuliform very early on, slightly viscid and firmly mucilaginous in centre, pruinose to almost subvelutinate in centre under hand lens, velar remnants absent. Margins conspicuously radiately ridged and grooved for 1-1.5 cm from edge, ridges dark brown, intervening cuticular tissue more pallid, almost grey. Centre dark blackish-brown (c 6F3-4) or more reddish-brown (c 6E6-F6), paling towards margins (c5D4) in places, tissue between ridges often greyish-yellow (c 4C2-3). GILLS: white to sordid white, moderately crowded, rather thick, brittle, simple or as frequently forked near stipe, not or only very occasionally forked near margins, lamellulae occasionally present but in no particular sequence, edges of gills sometimes discoloured brownish in old fructs. STIPE: 3.5-5.5 cm long, more or less equal, 1-1.5 cm diam., hollow at maturity, no annulus, no indications of velar remnants, matte and finely felted, white to sordid white with brownish spots, stains and patches. Flesh white to creamy white, unchanging. CONTEXT OF PILEUS: white to creamy white, unchanging. SMELL not noted; TASTE: context not distinctive. Gills extremely acrid and bitter, persistent. SPORE PRINT: B-C Crawshay when fresh. CHEMICAL REACTIONS Formalin on context - no reaction Phenol on context - slowly dark red, vinaceous (c 11E5), FeS04 on context - rapidly pinkish KOH on pileus - darkening. KOH on context - no reaction. NH4OH on pileus and content - no reaction. HABITAT: Solitary under Leptospermum ericoides, Auckland, Titirangi, Atkinson Park, 13/2/67, Coll. R.F.R. McNabb. COLOUR PHOTO FOR PUBL (where is it?). Details of cuticle difficult to make out but apparently consists of erect to oblique thin-walled hyphe 3.5-5um diam., arising from a heavily gelatinised subcutis of +- parallel repent hyphae. Numerous long pilocystidia with refractive granular content projecting into the surface layer, distributed throughout the entire context and subcutis. Hyphae 3.5-5um diam., septate, typically with slightly inflated ends, often with yellowish brown contents in KOH, forming a +- pallisade arising from shorter celled slightly irregular inflated hyphae. Pilocystidia 4-9um diam., apices acuminate, rounded, capitulate. Cuticle of stipe composed of repent, interwoven hyphae, thin-walled, septate 3-5.5um diam., thin-walled, septate 3-5.5um diam., often aggregated into clumps. Caulocystidia present, long, similar to pilocystidia. Spores broadly ellipsoid, obliquely apiculate, apiculus to 2um long 10.5 – 13.5 x 9.8 – 11.9um. Ornamentation of amyloid or partially inamyloid dense, truncated spines and crests to 2um high, in confluent groups, joined by fine to moderately coarse ridges or occasionally isolated. Plage present, relatively conspicuous. Cheilocystidia present, sparse to relatively numerous, simialr to pleurocystidia but shorter. Basidia clavate, 4-spored sterigmata to 5.5um long, 39 – 56 x 10.5 – 13.5um. Pleurocystidia numerous, scattered projecting to 50um beyond basidia , fusiform to subclavate or clavate, apices typically strangulate or capitulate, hyaline, thin-walled, content not particularly granular but slightly refractive 56-94 x 7-12.6um [Ridley:] Basidiospores 9.25-10.5 x 8-9 um, [10.5 – 13.5 x 10-12 um] Qm=1.14, subglobose (1.08-)1.11-1.17, subglobose to broadly ellipsoid, hyaline. Ornamented with moderately crowded, partiaily inamyloid to amyloid, acute verrucae and crests, to 2um with a few small isolated verrucae, although usually confluent, joined by low, amyloid ridges forming a partial reticulum. Suprahilar plage difficult to distinguish, weakly amyloid to amyloid, finely roughened, occasionally appearing punctate under the light microscope, c. 2.75 x 2 um wide. Hilar appendix obconical, oblique, 1.75 um long (Fig. 25c). The plage was difficult to distinguish under the light microscope, although quite obvious in SEM. The degree and extent of the amyloid reaction of the plage, varies with each basidiospore from a thin entire covering to small discrete spots and the latter giving a slightly punctate appearance. The ornamentation was type IIIB. [Cooper:] Cap SV+ve. Fuchsinophile hyphae not seen. With plage and weak amyloid spot. Both size and degree of spore ornamentation is variable. length=8.3–10.9µm (µ=9.3, σ=0.8), width=6.6–8.8µm (µ=7.9, σ=0.6), Q=1.0–1.3µm (µ=1.2, σ=0.1), n=20. The type does not have lamellulae although McNabb says for the type 'occasionally present but in no particular sequence''
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