Taxonomy
Collection 1000390 (herbarium acc. no. MICH 10751) is the holotype of Hebeloma immutabile.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000390 was collected by A.H. Smith (17538) on 4th October 1941 in Clallam, Mt Angeles, Olympic National Park, Washington, UNITED STATES (approx. 47.9955°N, 123.4653°W, altitude approximately 1950 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as boreal woodland, 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. 1.1: Forest – Boreal.
According to the GPS data the collection was in the British Columbia coastal conifer 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 Conifer Forests) and Koppen climate code Dsc (Cold, dry summer, cold summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 20–40 mm diameter; shape convex; margin characters appendiculate, involute; viscosity tacky when moist; spotting not recorded; hygrophanous no; colour variation two-colour; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil yes.
Lamellae: attachment not recorded; maximum depth not recorded; number of complete lamellae 46; tears absent; white fimbriate edge absent.
Stipe: 40–70 x 2–4 {median} x 2–4 {basal} mm; stipe Q 16.0–17.5; base cylindrical; floccosity fibrillose, velute; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure 31.3; smell none; taste mild.
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 no; Spore Code: O3; O4; P3; D3.
Basidia: 18.9–24.8 x 6.2–7.0 μm; ave. Q = 3.3; basidia spore nature not recorded.
Cheilocystidia: main shape cylindrical; special features not recorded; Cheilocystidia Ratios: A/M = 1.00; A/B = 1.04; B/M = 0.96.
Pleurocystidia: only close to lamella edge.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (8.1) 8.3–10.3 (10.5) 9.4 9.3 0.560 Width (µm) (5.1) 5.2–6.3 (6.8) 5.7 5.7 0.380 Q (1.50) 1.51–1.80 (1.87) 1.64 1.63 0.09 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (17) 18–26 (27) 22 21 2.67 Apex Width (4.9) 5.2–7.4 (7.8) 6.5 6.6 0.740 Median Width 5.3–7.4 (8.8) 6.6 6.7 0.84 Basal Width (4.2) 5.1–7.1 (7.3) 6.3 6.4 0.7
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1941) --- °C --- °C --- mm Collection month (10/1941) --- °C --- °C --- mm Max month (1941) --- °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 | 51.0 | 66.91 | 10th/11 |
| Average length | 9.4 | 9.18 | 1st–3rd/11 |
| Average width | 5.7 | 5.79 | 9th–10th/11 |
| Standard deviation of length | 0.56 | 0.54 | 5th–6th/11 |
| Standard deviation of width | 0.38 | 0.36 | 6th/11 |
| Median length | 9.3 | 9.15 | 3rd–6th/11 |
| Median width | 5.7 | 5.81 | 10th/11 |
| Minimum length | 8.1 | 8.08 | 3rd–7th/11 |
| Minimum width | 5.1 | 4.97 | 2nd–4th/11 |
| Low length | 8.3 | 8.32 | 6th–9th/11 |
| Low width | 5.2 | 5.26 | 6th–8th/11 |
| High length | 10.3 | 10.08 | 3rd–4th/11 |
| High width | 6.3 | 6.35 | 6th–7th/11 |
| Max length | 10.5 | 10.46 | 5th–6th/11 |
| Max width | 6.8 | 6.66 | 4th–5th/11 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3; O4 | 100% of collections; 27% of collections |
| Perispore loosening | P3 | 100% of collections |
| Dextrinoidity | D3 | 90% of collections |