Taxonomy
Collection 12058 (herbarium acc. no. BR BR-MYCO 173985-64 (holotype), C C-F- 90148 (isotype)) is the holotype of Hebeloma aurantioumbrinum.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 12058 was collected by H.J. Beker, M.L. Beker on 19th August 2007 in Knudsenheia, SVALBARD (78.9373°N, 11.8425°E, altitude approximately 10 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 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: no.
Pileus: 12–18 mm diameter; shape umbonate broadly; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous no; colour variation unicolor; with colour at centre umber; and colour at margin dark pinkish buff; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth up to 2 mm; number of complete lamellae 39; tears visible with naked eye; white fimbriate edge present.
Stipe: 14–21 x 2–3 {median} x 2–6 {basal} mm; stipe Q 4.7–6.7; base clavate, cylindrical; floccosity pruinose; rooting no; mycelial chords no.
Context: texture firm; stipe interior stuffed; stipe flesh discolouring from base no; slenderness measure 7.3; smell raphanoid weakly; taste not recorded.
Spore deposit colour: clay-buff.
Exsiccata: normal.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope brown pale; guttulate yes; papillate weak; Spore Code: O1; O2; P0; D1; D2.
Basidia: 35.2–39.8 x 7.5–11.0 μm; ave. Q = 4.1; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, clavate-stipitate; special features geniculate, septa; Cheilocystidia Ratios: A/M = 1.95; A/B = 1.98; B/M = 1.01.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 70 μm; ixocutis maximum hyphae width 6 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis ellipsoid.
Caulocystidia: caulocystidia maximum length 75 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (10.5) 10.7–12.3 (12.9) 11.5 11.5 0.470 Width (µm) (5.9) 6.0–7.1 (7.7) 6.5 6.6 0.330 Q (1.58) 1.65–1.89 (1.97) 1.76 1.76 0.07 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (41) 42–64 (65) 52 51 6.96 Apex Width (5.5) 6.1–10.1 (10.7) 8.1 8.1 1.190 Median Width (3.4) 3.5–5.0 (5.2) 4.3 4.4 0.44 Basal Width (3.1) 3.3–5.7 (6.1) 4.3 4.3 0.76
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (2007) -1.42 °C -5.37 °C 34.07 mm Collection month (8/2007) 5.51 °C 2.36 °C 28.97 mm Max month (2007) 5.74 °C 2.41 °C 93.86 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 | 96.0 | 74.06 | 4th/16 |
| Average length | 11.5 | 11.12 | 4th–6th/20 |
| Average width | 6.5 | 6.49 | 9th–12th/20 |
| Standard deviation of length | 0.47 | 0.76 | 16th/16 |
| Standard deviation of width | 0.33 | 0.34 | 7th–9th/16 |
| Median length | 11.5 | 11.19 | 5th–7th/16 |
| Median width | 6.6 | 6.58 | 6th–9th/16 |
| Minimum length | 10.5 | 9.65 | 2nd/20 |
| Minimum width | 5.9 | 5.80 | 6th–9th/20 |
| Low length | 10.7 | 10.03 | 2nd/20 |
| Low width | 6.0 | 6.04 | 8th–16th/20 |
| High length | 12.3 | 12.14 | 10th/20 |
| High width | 7.1 | 6.98 | 8th–11th/20 |
| Max length | 12.9 | 12.82 | 11th–12th/20 |
| Max width | 7.7 | 7.28 | 3rd/20 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O1; O2 | 25% of collections; 100% of collections |
| Perispore loosening | P0 | 75% of collections |
| Dextrinoidity | D1; D2 | 95% of collections; 55% of collections |