Taxonomy
Collection 1000045 (herbarium acc. no. LY BR63-20) is the holotype of Hebeloma velutipes.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000045 was collected by G. Bruchet on 24th September 1963 in Les Echets (Ain), FRANCE (approx. 45.86°N, 4.9°E, altitude approximately 280 m above sea level - Google maps). The ectomycorrhizal family Betulaceae (genus Corylus) was present.
The surrounding habitat was described as deciduous woodland with a substrate of clayey 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: 30–50 mm diameter; shape convex, umbonate weakly; margin characters involute, scalloped; viscosity tacky when moist; spotting no; hygrophanous no; colour variation unicolor; with colour at centre cream; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth up to 4 mm; number of complete lamellae 60; tears visible with naked eye; white fimbriate edge present.
Stipe: 30–70 x 4–8 {median} x 6–12 {basal} mm; stipe Q 7.5–8.8; base bulbous, clavate, cylindrical, subbulbous; floccosity floccose weak, pruinose, velute; rooting no; mycelial chords no.
Context: texture firm; stipe interior hollow, stuffed, superior wick; stipe flesh discolouring from base no; slenderness measure 9.9; smell raphanoid, raphanoid weakly; taste bitter weakly, raphanoid weakly.
Spore deposit colour: yellowish brown.
Exsiccata: hard.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope yellow brown; guttulate no; papillate weak; Spore Code: O2; P0; D3.
Basidia: 27.7–33.1 x 7.0–9.5 μm; ave. Q = 3.6; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, clavate-stipitate, clavate-lageniform or clavate-ventricose; special features septa; Cheilocystidia Ratios: A/M = 1.64; A/B = 1.38; B/M = 1.24.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: caulocystidia maximum length 120 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (9.9) 10.3–12.5 (12.7) 11.3 11.2 0.720 Width (µm) (5.5) 5.8–7.0 (7.2) 6.5 6.6 0.380 Q (1.56) 1.62–1.86 (1.99) 1.73 1.73 0.09 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (47) 48–71 (78) 58 57 8.02 Apex Width (4.9) 5.7–10.5 (11.4) 7.9 7.9 1.430 Median Width 4.2–6.5 (7.7) 5.3 5.2 0.82 Basal Width (4.6) 4.7–8.8 (9.6) 6.5 6.0 1.35
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1963) 14.66 °C 5.57 °C 74.68 mm Collection month (9/1963) 20.66 °C 11.31 °C 43.66 mm Max month (1963) 26.46 °C 14.94 °C 170.55 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 | 58.0 | 52.33 | 57th–60th/149 |
| Average length | 11.3 | 11.12 | 55th–65th/149 |
| Average width | 6.5 | 6.55 | 84th–92nd/149 |
| Standard deviation of length | 0.72 | 0.70 | 53rd–56th/132 |
| Standard deviation of width | 0.38 | 0.33 | 31st–33rd/132 |
| Median length | 11.2 | 11.06 | 55th–62nd/132 |
| Median width | 6.6 | 6.55 | 54th–74th/132 |
| Minimum length | 9.9 | 9.61 | 47th–53rd/132 |
| Minimum width | 5.5 | 5.85 | 97th–109th/132 |
| Low length | 10.3 | 10.04 | 44th–57th/132 |
| Low width | 5.8 | 6.07 | 94th–106th/132 |
| High length | 12.5 | 12.10 | 36th–43rd/132 |
| High width | 7.0 | 7.03 | 62nd–75th/132 |
| Max length | 12.7 | 12.59 | 51st–58th/132 |
| Max width | 7.2 | 7.31 | 67th–82nd/132 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O2 | 90% of collections |
| Perispore loosening | P0 | 75% of collections |
| Dextrinoidity | D3 | 92% of collections |