Taxonomy
Collection 1000143 (herbarium acc. no. PC0096752) is Hebeloma velutipes. It is the holotype of heterotypic synonym Hebeloma angustifolium Romagn. (1983).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000143 was collected by H. Romagnesi (65.83) on 13th August 1965 in Foret de la Haute Pommeraie near Apremont, Oise, FRANCE (approx. 49.23°N, 2.48°E, altitude approximately 100 m above sea level - Google maps). The ectomycorrhizal families Betulaceae (genus Carpinus), Fagaceae (genera Fagus and Quercus) and Malvaceae (genus Tilia) were present.
The surrounding habitat was described as deciduous woodland 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. 1.4: Forest – Temperate.
According to the GPS data the collection was in the European Atlantic mixed 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: 25–45 mm diameter; shape convex; margin characters involute; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation unicolor; with colour at centre pinkish buff; and colour at margin cream, pale cream; with remains of universal veil not recorded.
Lamellae: attachment not recorded; maximum depth up to 4 mm; number of complete lamellae 60; tears visible with naked eye; white fimbriate edge present.
Stipe: 30–60 x 4–7 {median} x 7–12 {basal} mm; stipe Q 7.5–8.6; base bulbous, clavate, cylindrical; floccosity pruinose; rooting no; mycelial chords not recorded.
Context: texture firm; stipe interior hollow, stuffed, superior wick; stipe flesh discolouring from base weak; slenderness measure 10.2; smell raphanoid; taste bitter.
Spore deposit colour: analysis not yet complete.
Exsiccata: normal.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope yellow brown; guttulate weak; papillate no; Spore Code: O2; P0; P1; D3.
Basidia: 27.8–38.7 x 6.8–10.2 μm; ave. Q = 4.1; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, clavate-lageniform or clavate-ventricose; special features geniculate, septa; Cheilocystidia Ratios: A/M = 1.55; A/B = 1.55; B/M = 1.04.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (8.6) 9.4–11.2 (12.1) 10.3 10.3 0.590 Width (µm) (5.7) 6.0–6.9 (8.0) 6.5 6.5 0.350 Q (1.39) 1.43–1.71 (1.77) 1.58 1.57 0.08 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (47) 48–67 (68) 58 58 6.65 Apex Width (4.6) 5.9–8.9 (10.0) 7.5 7.7 0.960 Median Width (3.8) 4.0–5.6 (5.9) 4.8 4.7 0.55 Basal Width 3.3–6.7 (7.0) 4.9 4.9 1.08
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1965) 13.78 °C 5.28 °C 63.71 mm Collection month (8/1965) 21.26 °C 11.22 °C 70.80 mm Max month (1965) 21.32 °C 11.22 °C 108.39 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 | 56.0 | 52.33 | 65th–68th/149 |
| Average length | 10.3 | 11.12 | 127th–132nd/149 |
| Average width | 6.5 | 6.55 | 84th–92nd/149 |
| Standard deviation of length | 0.59 | 0.70 | 95th–98th/132 |
| Standard deviation of width | 0.35 | 0.33 | 42nd–51st/132 |
| Median length | 10.3 | 11.06 | 111st–115th/132 |
| Median width | 6.5 | 6.55 | 75th–79th/132 |
| Minimum length | 8.6 | 9.61 | 116th–119th/132 |
| Minimum width | 5.7 | 5.85 | 85th–91st/132 |
| Low length | 9.4 | 10.04 | 103rd–105th/132 |
| Low width | 6.0 | 6.07 | 71st–84th/132 |
| High length | 11.2 | 12.10 | 115th–116th/132 |
| High width | 6.9 | 7.03 | 76th–89th/132 |
| Max length | 12.1 | 12.59 | 90th–94th/132 |
| Max width | 8.0 | 7.31 | 10th–20th/132 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O2 | 90% of collections |
| Perispore loosening | P0; P1 | 75% of collections; 56% of collections |
| Dextrinoidity | D3 | 92% of collections |