Taxonomy
Collection 1000496 (herbarium acc. no. MICH 10817) is Hebeloma albomarginatum. It is the holotype of heterotypic synonym Hebeloma wells-kemptoniae A.H. Sm., V.S. Evenson & Mitchel [as "wells-kemptonae"] (1983).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000496 was collected by V. Wells, P. Kempton (5304), det: A.H. Smith on 16th August 1971 in University Woods, University of Alaska, Fairbanks, Fairbanks North Star County, Alaska, UNITED STATES (approx. 64.8591°N, 147.8246°W, altitude approximately 170 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genus Picea) was present.
The surrounding habitat was described as woodland roadside, 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 Interior Alaska-Yukon lowland taiga 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: Boreal Forests/Taiga) and Koppen climate code Dfc (Cold, no dry season, cold summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 70–130 mm diameter; shape convex; margin characters fibrillose, involute, reflexed, sulcate; 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 yes.
Lamellae: attachment adnexed; maximum depth up to 6 mm; number of complete lamellae not recorded; tears visible with naked eye; white fimbriate edge present.
Stipe: 60–90 x 15–30 {median} x 20–35 {basal} mm; stipe Q 3.0–4.0; base bulbous; floccosity floccose, floccose at apex; rooting not recorded; mycelial chords not recorded.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base not recorded; slenderness measure 2.8; smell none; taste mild.
Spore deposit colour: brownish olive, yellowish brown.
Exsiccata: analysis not yet complete.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid, limoniform; colour through microscope not recorded; guttulate not recorded; papillate very strongly; Spore Code: O3; O4; P2; D4.
Basidia: 28.5–35.3 x 7.8–9.5 μm; ave. Q = 3.6; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, clavate-stipitate, clavate-lageniform or clavate-ventricose; special features not recorded; Cheilocystidia Ratios: A/M = 1.86; A/B = 2.22; B/M = 0.91.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (10.0) 11.5–14.1 (14.8) 12.8 13.0 0.830 Width (µm) (6.4) 6.8–8.5 (8.6) 7.8 7.9 0.470 Q (1.41) 1.46–1.81 (1.88) 1.64 1.65 0.1 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (49) 51–71 (80) 61 60 7.84 Apex Width (7.0) 7.5–11.1 (12.9) 9.2 9.1 1.150 Median Width (3.2) 3.9–6.0 (6.5) 5.1 5.3 0.86 Basal Width (2.5) 3.0–6.7 (7.4) 4.5 4.3 1.32
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1971) 0.45 °C -10.50 °C 30.34 mm Collection month (8/1971) 18.63 °C 7.51 °C 63.28 mm Max month (1971) 23.47 °C 9.48 °C 63.28 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 | 90.0 | 78.55 | 6th/20 |
| Average length | 12.8 | 11.77 | 1st/20 |
| Average width | 7.8 | 7.46 | 3rd–6th/20 |
| Standard deviation of length | 0.83 | 0.77 | 8th–9th/20 |
| Standard deviation of width | 0.47 | 0.41 | 4th/20 |
| Median length | 13.0 | 11.82 | 1st/20 |
| Median width | 7.9 | 7.47 | 1st–2nd/20 |
| Minimum length | 10.0 | 9.96 | 5th–9th/20 |
| Minimum width | 6.4 | 6.38 | 9th–12th/20 |
| Low length | 11.5 | 10.46 | 2nd/20 |
| Low width | 6.8 | 6.79 | 8th–11th/20 |
| High length | 14.1 | 12.91 | 1st/20 |
| High width | 8.5 | 8.11 | 1st/20 |
| Max length | 14.8 | 13.53 | 1st/20 |
| Max width | 8.6 | 8.35 | 2nd/20 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3; O4 | 50% of collections; 100% of collections |
| Perispore loosening | P2 | 65% of collections |
| Dextrinoidity | D4 | 100% of collections |