Taxonomy
Collection 1000316 (herbarium acc. no. BPI 773434) is Hebeloma sordidulum. It is the holotype of heterotypic synonym Hebeloma arenosum Burds., Macfall & M.A. Albers [as "arenosa"] (1986).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000316 was collected by J.S. MacFall in September 1984 in Wilson Nursery, Boscobel, Grant County, Wisconsin, UNITED STATES (approx. 43.1437°N, 90.6917°W, altitude approximately 200 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genus Pinus) was present.
The surrounding habitat was described as not recorded with a substrate of sandy soil.
According to the GPS data the collection was in the Upper Midwest US forest-savanna transition 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 Dfa (Cold, no dry season, hot summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 20–60 mm diameter; shape convex; margin characters involute, reflexed; viscosity tacky when moist; spotting not recorded; hygrophanous no; colour variation two-colour; with colour at centre greyish buff, dark pinkish buff, yellowish brown, clay-red; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment adnexed; maximum depth not recorded; number of complete lamellae 68; tears not recorded; white fimbriate edge weak.
Stipe: 20–50 x 5–15 {median} x 4–12 {basal} mm; stipe Q 3.3–4.0; base sand bulb, tapering; floccosity pruinose, pruinose at apex; rooting not recorded; mycelial chords not recorded.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base not recorded; slenderness measure 3.0; 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, fusoid, limoniform; colour through microscope yellow brown; guttulate no; papillate very strongly; Spore Code: O3; P1; P2; D2; D3.
Basidia: 23.6–32.1 x 6.5–9.1 μm; ave. Q = 3.5; basidia spore nature not recorded.
Cheilocystidia: main shape capitate-stipitate, clavate-stipitate, clavate-lageniform or clavate-ventricose, spathulate-stipitate; special features many collapsed in exsiccata, median thickening; Cheilocystidia Ratios: A/M = 1.88; A/B = 1.50; B/M = 1.60.
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) 10.7–13.4 (13.9) 11.9 11.8 0.990 Width (µm) (4.2) 5.2–6.5 (6.8) 6.0 6.1 0.500 Q (1.62) 1.79–2.27 (2.37) 2.00 1.99 0.16 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (27) 30–52 (70) 41 39 7.87 Apex Width (4.0) 4.8–8.6 (9.4) 6.4 6.2 1.310 Median Width (2.5) 2.7–4.2 (5.0) 3.4 3.3 0.54 Basal Width (1.5) 1.8–7.5 (8.9) 5.4 5.7 1.77
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1984) 13.93 °C 2.30 °C 70.50 mm Collection month (9/1984) 22.74 °C 8.75 °C 73.28 mm Max month (1984) 29.37 °C 15.36 °C 155.43 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 | 57.0 | 58.85 | 20th/47 |
| Average length | 11.9 | 11.68 | 15th–19th/47 |
| Average width | 6.0 | 6.31 | 41st–44th/47 |
| Standard deviation of length | 0.99 | 0.79 | 8th–9th/47 |
| Standard deviation of width | 0.5 | 0.37 | 6th–7th/47 |
| Median length | 11.8 | 11.67 | 16th–22nd/47 |
| Median width | 6.1 | 6.32 | 34th–38th/47 |
| Minimum length | 9.5 | 9.97 | 38th–39th/47 |
| Minimum width | 4.2 | 5.42 | 47th/47 |
| Low length | 10.7 | 10.47 | 12th–16th/47 |
| Low width | 5.2 | 5.76 | 46th–47th/47 |
| High length | 13.4 | 12.91 | 12th–14th/47 |
| High width | 6.5 | 6.88 | 41st–43rd/47 |
| Max length | 13.9 | 13.47 | 7th–10th/47 |
| Max width | 6.8 | 7.12 | 40th–42nd/47 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3 | 82% of collections |
| Perispore loosening | P1; P2 | 93% of collections; 27% of collections |
| Dextrinoidity | D2; D3 | 100% of collections; 48% of collections |