PDD 30655 – Russula roseostipitata McNabb
Data provider:
New Zealand Fungarium - Te Kohinga Hekaheka o Aotearoa
Barcode:
PDD 30655
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 atroviridis
Determiner:
R.F.R. McNabb
Identification date:
Preferred name:
Russula roseostipitata McNabb
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Russulales
Family:
Russulaceae
Identification type:
Nomenclatural curation
Type status:
Holotype
Associations:
has host Nothofagus solandri
Substrate:
ground
Other identifications
Identification
Determined name:
Russula atrovirens
Determiner:
R.F.R. McNabb
Determiners reference no.:
RFRM 160
Identification date:
Preferred name:
Russula roseostipitata McNabb
Active:
no
Identification type:
Determination
Type status:
Holotype
Other components
Active identification
Determined name:
Nothofagus solandri
Determiner:
Identification date:
Preferred name:
Fuscospora solandri
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:
Craigieburn
Georeferences:
Latitude and Longitude (WGS84):
-43.102 171.863
Verbatim locality:
Craigieburn
Verbatim collector:
E. Horak
Standardised collector:
Egon Horak
Verbatim date:
1969/02/05
Start date:
1969-02-05
Country:
New Zealand
New Zealand Area Codes:
Mid Canterbury
Native lands:
Ngāi Tahu
Georeferences:
New Zealand Map Grid:
2417183.7E 5788985.3N (WGS84 -43.100805 171.859636)
Specimen notes
Public Note:
[McNabb:] 160 (Holotype, group 36), 168 (PDD31721), 176 (PDD31722 or ?), 179 (PDD31722 or ?). Pileus 3.5-6cm diam., convex then centrally depressed, smooth, no velar remnants, margins non-pectinate, viscid, finely innately pruinose under lens, greyish green c 29 F2-3 or sometimes more greyish sooty than greenish, with dull yellowish patches and areas. Gills: creamy white, crowded, simple, lamellulae absent, to 5mm deep, not discoloured. Stipe: 3-4cm long, more or less equal to tapering basally, 1- 1.5cm diam. Dry, finely furfuraceous with dark greyish scabrosities giving the stipe a faintly sooty appearance on the white background, solid or chambered when old, dry; flesh white, unchanging. Contxt of pileus white unchanging. Taste: gills and context mild. Chemical characters: formalin – n.r. phenol – slowly deep vinaceous; FeSO4 rapidly salmon pink; guaiacol on stipe base – no positive reaction; KOH on pileus – green colours removed leaving area orange; on context – n.r.; NH4OH on pileus greyish green colours intensifying; on context n.r. Habitat gregarious under Nothofagus solandri, Canterbury, Cragieburn, 5.2.1969, Coll. E. Horak. Cuticle a trichodermium of erect thin-walled, septate hyaline hyphae without coloured contents in KOH, 2-4um diam., terminal cells unspecialised but often irregularly acuminate. No indications of pilocystidia present. Cuticle of stipe composed of parallel to interwoven hyaline thin-walled septate hyphae, aggregated at intervals and then hyphae erect and projecting in clumps. Hyphae similar to those of pileus trchodermium, 2-4um diam. No caulocystidia present. Basidia clavate, 4-spored, 40-50 x 10-13um. Pleurocystidia numerous scattered, hyaline, thin-walled with refractive contents in KOH, not or only slightly projecting beyond basidia broadly fusiform with capitate apices 60-77 x 11-13.5um. Cheilocystida present on gill edge +- cylindrical to narrowly and irregularly subfusiform, with hyaline granular contents, 40-57 x 6-8um. Hymenophoral trama heteromerous +- broadly elliptical, obliquely apiculate, apiculus to 1.5-(2)um long. Ornamentation of moderately coarse but short -0.2-0.5um high verrucae, isolated and also aggregated into groups of 2-4, only very occasionally joined in such a way as to form an incomplete reticulum. 8.2-10.5 x 7.5-9um. [Ridley:] Basidiospores 7.25-8.25 x 6.5-7 um, [7.5-10.5 x 7-9 um] Qm 1.18, broadly ellipsoid, Q 1.11-1.26, subglobose to broadly ellipsoid, hyaline. Ornamented with moderately crowded, obtuse to acute, amyloid verrucae and occasional crests to 1.25 um, occasionally in confluent groups forming nodulated bands, usually single, joined by moderately fine, low, amyloid ridges, or rarely isolated, forming a partial reticulum. Suprahilar plage distinct weakly amyloid, roughened to flaking, c. 2.75 um wide. Hilar appendix obconical oblique, to 2 um long. (Fig. 26e). The plage in this species was quite distinct, although only weakly amyloid. In SEM it appeared rough and flaking which may have been responsible for the weak reaction. The ornamentation was type IIIB to IIIA. [Cooper:] DCY SV-ve. Cap with hairs, with occasional oleiferous hyphae in cap and gills. No fuchsinophile hyphae seen. The dried cap colour is dark green and magenta (not just green), and not much different to dried cap colour of griseoviolacea. It is minutely furfuraceous.The green NH4OH reaction does not happen on the holotype (too old?). Plage not seen, weak violet amyloid spot. Spores length=7.4–9.5µm (µ=8.5, σ=0.6), width=6.5–7.9µm (µ=7.2, σ=0.4), Q=1.1–1.3µm (µ=1.2, σ=0.1), n=20,oranamentation to 0.7um. Both the type and McNabb's notes indicate lamellulae are absent/rare.
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