Taxonomy
Collection 1000031 (herbarium acc. no. PC 0090764) is Hebeloma album. It is the holotype of heterotypic synonym Hebeloma fragilipes Romagn. (1965).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000031 was collected by H. Romagnesi (R63-179) on 7th September 1963 in Pinede du Mont-Po.nr Chantilly (Oise), FRANCE (approx. 49.19°N, 2.17°E, altitude approximately 120 m above sea level - Google maps). The ectomycorrhizal family Betulaceae (genus Betula) was present.
The surrounding habitat was described as not recorded with a substrate of calcareous, grassy, mossy soil.
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: 23–50 mm diameter; shape convex, umbonate weakly; margin characters involute; viscosity tacky when moist; spotting no; hygrophanous no; colour variation unicolor; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth up to 6 mm; number of complete lamellae 55; tears visible with naked eye; white fimbriate edge present.
Stipe: 25–70 x 4–7 {median} x 4–7 {basal} mm; stipe Q 6.3–10.0; base cylindrical; floccosity pruinose; rooting no; mycelial chords no.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base weak; slenderness measure 10.4; smell raphanoid; taste bitter strongly.
Spore deposit colour: umber.
Exsiccata: fragile.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope brown yellow; guttulate no; papillate yes; Spore Code: O3; P1; P2; D2.
Basidia: 23.7–25.1 x 7.3–7.4 μm; ave. Q = 3.3; basidia spore nature not recorded.
Cheilocystidia: main shape clavate-lageniform or clavate-ventricose; special features median thickening, septa; Cheilocystidia Ratios: A/M = 1.74; A/B = 1.27; B/M = 1.44.
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 thinly sausage-shaped.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (9.5) 9.6–11.5 (13.1) 10.8 10.8 0.640 Width (µm) (5.2) 5.6–6.4 (6.6) 6.0 6.1 0.290 Q (1.59) 1.63–1.95 (2.03) 1.79 1.78 0.09 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (31) 34–52 (58) 42 40 6.38 Apex Width (3.0) 4.1–6.8 (8.0) 5.6 5.8 0.840 Median Width (2.6) 2.9–4.0 (4.1) 3.4 3.4 0.38 Basal Width (3.2) 3.3–7.3 (7.9) 4.9 4.5 1.32
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1963) 12.76 °C 4.51 °C 47.75 mm Collection month (9/1963) 18.51 °C 10.08 °C 33.14 mm Max month (1963) 22.87 °C 11.78 °C 116.65 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 | 61.0 | 68.93 | 22nd–23rd/41 |
| Average length | 10.8 | 11.67 | 40th/43 |
| Average width | 6.0 | 6.42 | 33rd–34th/43 |
| Standard deviation of length | 0.64 | 0.75 | 33rd/41 |
| Standard deviation of width | 0.29 | 0.39 | 30th–32nd/41 |
| Median length | 10.8 | 11.63 | 39th/41 |
| Median width | 6.1 | 6.41 | 30th/41 |
| Minimum length | 9.5 | 10.14 | 36th–38th/43 |
| Minimum width | 5.2 | 5.59 | 31st–32nd/43 |
| Low length | 9.6 | 10.54 | 41st–42nd/43 |
| Low width | 5.6 | 5.86 | 30th–31st/43 |
| High length | 11.5 | 12.83 | 41st–42nd/43 |
| High width | 6.4 | 7.03 | 35th–36th/43 |
| Max length | 13.1 | 13.50 | 30th–33rd/43 |
| Max width | 6.6 | 7.37 | 36th–38th/43 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3 | 100% of collections |
| Perispore loosening | P1; P2 | 83% of collections; 25% of collections |
| Dextrinoidity | D2 | 69% of collections |