Taxonomy
Collection 1000392 (herbarium acc. no. MICH 10754) is Hebeloma albomarginatum. It is the holotype of heterotypic synonym Hebeloma insigne A.H. Sm., V.S. Evenson & Mitchel (1983).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000392 was collected by A.H. Smith (89184) on 29th August 1978 in Pitkin, near Snowmass Village, Elk Camp area, Colorado, UNITED STATES (approx. 39.1881°N, 106.9353°W, altitude approximately 2500 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genera Pinus, Picea and Abies) was present.
The surrounding habitat was described as coniferous, subalpine woodland streamside, 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 Colorado Rockies 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 Dfc (Cold, no dry season, cold summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 50–90 mm diameter; shape convex; margin characters fibrillose; viscosity tacky when moist; spotting no; hygrophanous no; colour variation two-colour; with colour at centre greyish brown; and colour at margin not recorded; with remains of universal veil yes.
Lamellae: attachment adnexed, emarginate; maximum depth not recorded; number of complete lamellae 96; tears visible with naked eye; white fimbriate edge present.
Stipe: 40–70 x 10–30 {median} x 15–35 {basal} mm; stipe Q 2.3–4.0; base bulbous, cylindrical; floccosity floccose; rooting no; mycelial chords not recorded.
Context: texture firm; stipe interior superior wick; stipe flesh discolouring from base not recorded; slenderness measure 2.5; smell not recorded; taste mild.
Spore deposit colour: brownish olive.
Exsiccata: analysis not yet complete.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid, limoniform; colour through microscope brown; guttulate no; papillate very strongly; Spore Code: O4; P2; D4.
Basidia: 29.7–35.4 x 7.5–9.6 μm; ave. Q = 3.8; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, lageniform, ventricose; special features conglutinate; Cheilocystidia Ratios: A/M = 1.48; A/B = 1.87; B/M = 0.95.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 130 μm; ixocutis maximum hyphae width 7 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis cylindrical, ellipsoid, thickly sausage-shaped up to 14 μm wide.
Caulocystidia: caulocystidia maximum length 95 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (10.7) 11.3–13.6 (14.4) 12.5 12.5 0.780 Width (µm) (6.7) 7.0–8.4 (8.5) 7.8 7.8 0.390 Q (1.40) 1.47–1.76 (1.87) 1.60 1.60 0.09 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (33) 34–80 (96) 56 54 16.22 Apex Width (4.3) 4.9–8.4 (9.2) 6.8 7.0 1.060 Median Width (3.5) 3.9–5.2 (5.6) 4.5 4.6 0.53 Basal Width (2.2) 2.3–7.6 (7.7) 4.2 3.5 1.73
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1978) 8.51 °C -7.51 °C 45.21 mm Collection month (8/1978) 20.26 °C 1.98 °C 23.19 mm Max month (1978) 22.09 °C 3.33 °C 111.09 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 | 77.0 | 78.55 | 9th/20 |
| Average length | 12.5 | 11.77 | 3rd–4th/20 |
| Average width | 7.8 | 7.46 | 3rd–6th/20 |
| Standard deviation of length | 0.78 | 0.77 | 11th–13th/20 |
| Standard deviation of width | 0.39 | 0.41 | 12th–15th/20 |
| Median length | 12.5 | 11.82 | 5th/20 |
| Median width | 7.8 | 7.47 | 3rd–7th/20 |
| Minimum length | 10.7 | 9.96 | 2nd/20 |
| Minimum width | 6.7 | 6.38 | 3rd–6th/20 |
| Low length | 11.3 | 10.46 | 3rd/20 |
| Low width | 7.0 | 6.79 | 5th–7th/20 |
| High length | 13.6 | 12.91 | 2nd/20 |
| High width | 8.4 | 8.11 | 2nd–4th/20 |
| Max length | 14.4 | 13.53 | 2nd/20 |
| Max width | 8.5 | 8.35 | 3rd–8th/20 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O4 | 100% of collections |
| Perispore loosening | P2 | 65% of collections |
| Dextrinoidity | D4 | 100% of collections |