Taxonomy
Collection 1000133 (herbarium acc. no. BR-MYCO 166528-76) is the holotype of Hebeloma vesterholtii.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000133 was collected by H.J. Beker on 19th September 2004 in Han sur Lesse, Luxembourg, BELGIUM (50.1142°N, 5.1715°E, altitude approximately 155 m above sea level - Google maps). The ectomycorrhizal families Betulaceae (genera Carpinus and Corylus) and Fagaceae (genera Fagus and Quercus) were present.
The surrounding habitat was described as deciduous woodland with a substrate of calcareous, grassy 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. 1.4: Forest – Temperate.
According to the GPS data the collection was in the Western European broadleaf forests 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: Temperate Broadleaf & Mixed Forests) and Koppen climate code Cfb (Temperate, no dry season, warm summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 23–29 mm diameter; shape umbonate; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous not recorded; colour variation two-colour; with colour at centre dark pinkish buff, ochraceous, yellowish brown, fawn; and colour at margin pale pinkish buff; with remains of universal veil not recorded.
Lamellae: attachment emarginate; maximum depth up to 4 mm; number of complete lamellae 66; tears visible with naked eye; white fimbriate edge present.
Stipe: 25–45 x 4–5 {median} x 4–5 {basal} mm; stipe Q 6.3–11.3; base cylindrical; floccosity floccose; rooting no; mycelial chords no.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base yes; slenderness measure 11.1; smell cocoa, none; taste mild.
Spore deposit colour: brownish olive.
Exsiccata: dark.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope yellow pale; guttulate yes; papillate no; Spore Code: O2; P0; D3; D4.
Basidia: 23.3–23.9 x 5.6–6.8 μm; ave. Q = 3.9; basidia spore nature not recorded.
Cheilocystidia: main shape clavate-lageniform or clavate-ventricose, ventricose; special features geniculate, median thickening, septa, short; Cheilocystidia Ratios: A/M = 1.44; A/B = 0.93; B/M = 1.61.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 125 μm; ixocutis maximum hyphae width 5 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis isodiametric.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (7.3) 7.8–9.5 (9.8) 8.7 8.6 0.540 Width (µm) (4.6) 4.7–5.6 (5.9) 5.1 5.2 0.290 Q (1.33) 1.54–1.82 (1.89) 1.69 1.70 0.09 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (21) 24–41 (42) 30 29 5.62 Apex Width (4.0) 4.4–6.3 (7.6) 5.3 5.3 0.640 Median Width (2.4) 2.5–4.4 (4.8) 3.6 3.7 0.57 Basal Width (3.5) 3.9–7.3 (7.9) 5.6 5.5 1.07
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (2004) 13.81 °C 5.78 °C 72.13 mm Collection month (9/2004) 19.79 °C 10.17 °C 54.84 mm Max month (2004) 22.95 °C 13.62 °C 144.81 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 | 87.0 | 60.09 | 5th/22 |
| Average length | 8.7 | 8.89 | 13th–15th/22 |
| Average width | 5.1 | 5.12 | 10th–14th/22 |
| Standard deviation of length | 0.54 | 0.59 | 13th/20 |
| Standard deviation of width | 0.29 | 0.27 | 7th/20 |
| Median length | 8.6 | 8.86 | 13th–16th/20 |
| Median width | 5.2 | 5.14 | 6th–10th/20 |
| Minimum length | 7.3 | 7.62 | 13th–14th/20 |
| Minimum width | 4.6 | 4.61 | 6th–14th/20 |
| Low length | 7.8 | 8.02 | 12th–15th/20 |
| Low width | 4.7 | 4.79 | 13th–15th/20 |
| High length | 9.5 | 9.80 | 14th–15th/20 |
| High width | 5.6 | 5.55 | 8th–10th/20 |
| Max length | 9.8 | 10.32 | 17th–18th/20 |
| Max width | 5.9 | 5.88 | 10th–11th/20 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O2 | 95% of collections |
| Perispore loosening | P0 | 81% of collections |
| Dextrinoidity | D3; D4 | 100% of collections; 27% of collections |