Taxonomy
Collection 17781 (MUOB 298572) is Hebeloma sordidulum.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 17781 was collected by D. Grootmyers on 6th November 2017 in Coopers Rock State Forest, Preston Co., West Virginia, UNITED STATES (39.6561°N, 79.7861°W, altitude approximately 620 m above sea level - Google maps). The ectomycorrhizal family Fagaceae (genus Quercus) was present.
The surrounding habitat was described as woodland roadside verge with a substrate of disturbed, gravelly 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 Appalachian mixed mesophytic 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 Dfb (Cold, no dry season, warm summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 31–67 mm diameter; shape applanate, convex; margin characters not recorded; viscosity tacky when moist; spotting not recorded; hygrophanous yes; colour variation two-colour; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil not recorded.
Lamellae: attachment emarginate; maximum depth not recorded; number of complete lamellae 69; tears absent; white fimbriate edge weak.
Stipe: 17–38 x 7–8 {median} x 7–14 {basal} mm; stipe Q 2.4–4.8; base clavate, cylindrical; floccosity not recorded; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure 2.4; smell raphanoid; taste not recorded.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope not recorded; guttulate not recorded; papillate very strongly; Spore Code: O2; O3; P1; D2.
Basidia: 23.3–28.8 x 6.8–7.8 μm; ave. Q = 3.6; basidia spore nature not recorded.
Cheilocystidia: main shape clavate-lageniform or clavate-ventricose; special features not recorded; Cheilocystidia Ratios: A/M = 1.96; A/B = 1.30; B/M = 1.54.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (9.5) 10.2–12.4 (12.8) 11.1 11.0 0.710 Width (µm) (4.9) 5.4–6.9 (7.3) 6.2 6.3 0.550 Q (1.50) 1.57–2.06 (2.20) 1.79 1.78 0.16 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (36) 39–53 (65) 45 45 6.2 Apex Width (5.2) 5.8–9.4 (10.0) 7.8 7.9 1.210 Median Width 3.1–4.8 (5.2) 4.0 4.1 0.6 Basal Width (4.6) 4.7–7.5 (7.9) 6.1 6.1 0.95
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (2017) 16.63 °C 5.06 °C 107.67 mm Collection month (11/2017) 11.13 °C -0.42 °C 91.35 mm Max month (2017) 27.18 °C 15.89 °C 170.50 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 | 46.0 | 58.85 | 28th/47 |
| Average length | 11.1 | 11.68 | 38th–41st/47 |
| Average width | 6.2 | 6.31 | 28th–35th/47 |
| Standard deviation of length | 0.71 | 0.79 | 27th–28th/47 |
| Standard deviation of width | 0.55 | 0.37 | 3rd/47 |
| Median length | 11.0 | 11.67 | 39th–40th/47 |
| Median width | 6.3 | 6.32 | 23rd–28th/47 |
| Minimum length | 9.5 | 9.97 | 38th–39th/47 |
| Minimum width | 4.9 | 5.42 | 41st–43rd/47 |
| Low length | 10.2 | 10.47 | 33rd–36th/47 |
| Low width | 5.4 | 5.76 | 38th–42nd/47 |
| High length | 12.4 | 12.91 | 37th–38th/47 |
| High width | 6.9 | 6.88 | 16th–28th/47 |
| Max length | 12.8 | 13.47 | 39th–41st/47 |
| Max width | 7.3 | 7.12 | 14th–17th/47 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O2; O3 | 48% of collections; 82% of collections |
| Perispore loosening | P1 | 93% of collections |
| Dextrinoidity | D2 | 100% of collections |