Taxonomy
Collection 1000498 (herbarium acc. no. MICH 10812) is Hebeloma albidulum. It is the lectotype of heterotypic synonym Hebeloma simile Kauffman (1918).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000498 was collected by L.H. Pennington (39337) on 12th September 1907 in Ann Arbor, Washtenaw County, Michigan, UNITED STATES (approx. 42.2753°N, 83.7308°W, altitude approximately 270 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as woodland with a substrate of grassy 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 Southern Great Lakes 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 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 not recorded; 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 not recorded; number of complete lamellae 58; tears not recorded; white fimbriate edge present.
Stipe: 30–80 x 2–5 {median} x 2–5 {basal} mm; stipe Q 15.0–16.0; base cylindrical; floccosity fibrillose, floccose, pruinose; rooting not recorded; mycelial chords not recorded.
Context: texture firm; stipe interior stuffed; stipe flesh discolouring from base not recorded; slenderness measure 21.9; smell raphanoid weakly; taste raphanoid weakly.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid, limoniform; colour through microscope yellow; guttulate no; papillate yes; Spore Code: O3; O4; P2; P3; D3; D4.
Basidia: 19.1–19.9 x 5.6–6.3 μm; ave. Q = 3.3; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, ventricose; special features many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 1.49; A/B = 1.20; B/M = 1.28.
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 (12.9) 11.5 11.5 0.640 Width (µm) (5.7) 6.3–7.5 (8.9) 6.9 6.8 0.460 Q (1.43) 1.48–1.85 (2.00) 1.68 1.69 0.12 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (46) 47–64 (65) 56 56 6.81 Apex Width (5.1) 5.2–6.8 (7.0) 6.0 5.8 0.660 Median Width (2.9) 3.0–5.4 (5.5) 4.2 4.3 1.01 Basal Width (3.4) 3.6–7.8 (8.3) 5.4 5.1 1.76
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1907) --- °C --- °C --- mm Collection month (9/1907) --- °C --- °C --- mm Max month (1907) --- °C --- °C --- 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 | 69.0 | 74.28 | 13th/25 |
| Average length | 11.5 | 11.06 | 1st–4th/25 |
| Average width | 6.9 | 6.84 | 10th–14th/25 |
| Standard deviation of length | 0.64 | 0.65 | 16th/25 |
| Standard deviation of width | 0.46 | 0.39 | 7th–8th/25 |
| Median length | 11.5 | 11.10 | 3rd–4th/25 |
| Median width | 6.8 | 6.85 | 16th/25 |
| Minimum length | 9.5 | 9.50 | 9th–12th/25 |
| Minimum width | 5.7 | 5.87 | 17th–20th/25 |
| Low length | 10.2 | 10.02 | 10th/25 |
| Low width | 6.3 | 6.22 | 8th–13th/25 |
| High length | 12.4 | 12.12 | 5th–9th/25 |
| High width | 7.5 | 7.47 | 12th–14th/25 |
| Max length | 12.9 | 12.62 | 8th–10th/25 |
| Max width | 8.9 | 7.76 | 1st/25 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3; O4 | 96% of collections; 80% of collections |
| Perispore loosening | P2; P3 | 48% of collections; 100% of collections |
| Dextrinoidity | D3; D4 | 88% of collections; 84% of collections |