PDD 106716 – Pluteus microspermus E. Horak
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 106716
Specimen type:
Packet
Database record added:
13 November 2018
Database record updated:
01 December 2023
Components
Primary component
Active identification
Determined name:
Pluteus microspermus
Determiner:
J.A. Cooper
Identification date:
2017-03-11 (Verbatim: 2017/03/11)
Preferred name:
Pluteus microspermus E. Horak
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Agaricales
Family:
Pluteaceae
Identification type:
Determination
Substrate:
wood
Other identifications
Identification
Determined name:
Pluteus concentricus E. Horak
Determiner:
W. Daley
Identification date:
2016-11-20 (Verbatim: 20/11/2016)
Preferred name:
Pluteus concentricus E. Horak
Active:
no
Identification type:
Determination
Collection events
Primary collection event
Collection event type:
Field
Standard locality
Location:
Howick, Mangemangeroa Valley Walkway
Georeferences:
Latitude and Longitude (WGS84):
-36.9153 174.943
Verbatim locality:
Howick, Mangemangeroa Valley Walkway
Verbatim collector:
W.M. Daley
Standardised collector:
Wanda M. Daley
Verbatim date:
2016/11/20
Start date:
2016-11-20
Country:
New Zealand
New Zealand Area Codes:
Auckland
Native lands:
Ngāi Tai ki Tāmaki
Ngāti Maru (Hauraki)
Ngāti Paoa
Ngāti Tamaoho
Ngāti Tamaterā
Ngāti Whanaunga
Te Ākitai Waiohua
Waikato
Georeferences:
Latitude and Longitude (WGS84):
-36.914464 174.944873
Specimen notes
Public Note:
[WD]This Pluteus species has a large flat dark brown cap when mature with small low ridges towards the outer margin of the cap. The appearance of the cap is relatively smooth with fibres lying very flat on the cap. There was some splitting of the cap at the margin. This fruit body was 8 cm in diameter with an overall height of 11.5 cm. The gills have a darker brown edge. The stipe is brown and fibrous along the entire length. It was longitudinally ridged especially towards the base and quite fuzzy towards the apex. The stipe was tall, 10-11 mm in diameter with a bulbous base of about 25 mm diameter. It was observed growing amongst disintegrated very rotten wood on the ground. Remnant mature coastal broadleaf forest. [JAC] This has a sequence identical to those I have called P. microspermus and not the same as a group of P. concentricus, three of which are paratypes. This has some clamps, maybe 30%. I would not call them pseudoclamps but nevertheless they are not obvious, like P. similis. The cap is smooth and not velutinous, or even innate-fibrilose. The pileipellis does not have many large terminal cells. The presence of a fraction of hyphae with real clamps is noted in other sequence-identical collections. Most of them also have pilepellis hyphae that do not agree with Horak's description of P. microspermus, but one of them does! Horak says the two species can be separated by spore size. concentricus 5.5-6.5 x 4.5-5, microspermus 5-6 x 3-3.5. Here the spores are length=4.7-5.8µm (µ=5.2, σ=0.32), width=3.4-4.2µm (µ=3.8, σ=0.21), Q=1.2-1.6µm (µ=1.37, σ=0.11), n=20. Pleurocystidia hooked, to 50 x 15um. concentricus 60-80 x 13-22. Microspermus 45-65 x 12-20. This material agrees with P. microspermus.
W.M. Daley, J.A. Cooper
W.M. Daley, J.A. Cooper
External links
iNaturalist:
Assigned reference numbers
JA Cooper Fungarium:
JAC14347
Permissions
Project permits
Biocultural (BC) Notice
