Taxonomy
Collection 11982 (herbarium acc. no. BR5020184126599) is the holotype of Hebeloma spetsbergense.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 11982 was collected by J. Sandmo on 13th August 2007 in Bjorndalen, SVALBARD (78.2207°N, 15.334°E, altitude approximately 50 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.
The surrounding habitat was described as arctic tundra pastureland with a substrate of acidic soil, corresponding to the IUCN habitat We map from the collector's description of the habitat to the International Union for Conservation of Nature (IUCN)'s definition using a standardised set of rules. Please see this page for a full list of IUCN habitats. 4.1: Grassland – Tundra.
According to the GPS data the collection was in the Russian Arctic desert WWF ecoregion The World Wildlife Fund (WWF) have divided the world into 867 terrestrial ecoregions. The ecoregion here is estimated by mapping from the GPS coordinates of the collection using data made available by Dinerstein et al (2017). Use this webtool to explore the ecoregions visually or see a full list of current ecoregions on Wikipedia. (biome: Tundra) and Koppen climate code ET (Polar, tundra).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: yes.
Pileus: 12–19 mm diameter; shape umbilicate; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous no; colour variation two-colour; with colour at centre fuscous; and colour at margin cinnamon; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth up to 3 mm; number of complete lamellae 30; tears absent; white fimbriate edge not recorded.
Stipe: 20–32 x 2–3 {median} x 2–3 {basal} mm; stipe Q 9.7–12.0; base cylindrical; floccosity fibrillose; rooting no; mycelial chords no.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base yes; slenderness measure 19.7; smell raphanoid; taste not recorded.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope not recorded; guttulate not recorded; papillate no; Spore Code: O1; O2; P0; D2.
Basidia: 27.9–34.7 x 8.2–9.6 μm; ave. Q = 3.6; basidia spore nature not recorded.
Cheilocystidia: main shape lageniform, ventricose; special features median thickening, yellow contents; Cheilocystidia Ratios: A/M = 1.24; A/B = 0.61; B/M = 2.08.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 30 μm; ixocutis maximum hyphae width 5 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis thickly sausage-shaped up to 18 μm wide.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (11.1) 11.5–13.4 (14.1) 12.6 12.7 0.580 Width (µm) (6.7) 7.1–8.3 (8.4) 7.7 7.6 0.360 Q (1.52) 1.54–1.74 (1.77) 1.64 1.65 0.06 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (36) 46–65 (66) 54 53 7.18 Apex Width (3.1) 3.7–5.8 (6.3) 4.8 4.8 0.630 Median Width (3.5) 3.7–5.1 (5.2) 4.3 4.2 0.49 Basal Width (6.2) 6.4–11.9 (12.1) 8.9 8.7 1.64
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (2007) -0.93 °C -5.11 °C 36.27 mm Collection month (8/2007) 5.10 °C 1.68 °C 40.88 mm Max month (2007) 5.72 °C 2.11 °C 100.51 mm
- arrow_drop_downarrow_drop_upAnalyse this collection
Compare this collection to its species
This section compares data for this collection against its true species and also against the most likely species as determined by our identifier. More often than not these will be the same species, but where this is not the case, the data may be used to help explain why the identifier got it wrong.Image gallery
Detailed statistics
| Spore measurements | My value | Species mean value | Position |
|---|---|---|---|
| Count | 53.0 | 62.82 | 33rd/61 |
| Average length | 12.6 | 13.12 | 46th–49th/61 |
| Average width | 7.7 | 7.99 | 45th–50th/61 |
| Standard deviation of length | 0.58 | 0.84 | 55th/61 |
| Standard deviation of width | 0.36 | 0.42 | 41st–46th/61 |
| Median length | 12.7 | 13.11 | 38th–44th/61 |
| Median width | 7.6 | 7.98 | 47th–58th/61 |
| Minimum length | 11.1 | 11.26 | 34th–38th/61 |
| Minimum width | 6.7 | 7.03 | 50th–53rd/61 |
| Low length | 11.5 | 11.83 | 40th–43rd/61 |
| Low width | 7.1 | 7.37 | 47th–52nd/61 |
| High length | 13.4 | 14.43 | 54th–55th/61 |
| High width | 8.3 | 8.65 | 47th–52nd/61 |
| Max length | 14.1 | 15.23 | 53rd–54th/61 |
| Max width | 8.4 | 8.98 | 56th–60th/61 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O1; O2 | 59% of collections; 91% of collections |
| Perispore loosening | P0 | 100% of collections |
| Dextrinoidity | D2 | 45% of collections |