Taxonomy
Collection 1000419 (herbarium acc. no. MICH 10763) is the holotype of Hebeloma mackinawense.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000419 was collected by H.D. Thiers, A.H. Smith (AHS35841), det: L.R. Hesler, A.H. Smith on 16th September 1950 in Emmet, west of Mackinaw City, Michigan, UNITED STATES (approx. 45.7742°N, 84.7458°W, altitude approximately 200 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as mixed 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. 1.4: Forest – Temperate.
According to the GPS data the collection was in the Western 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 Dfb (Cold, no dry season, warm summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 30–110 mm diameter; shape convex; margin characters involute; viscosity tacky when moist; spotting yes; hygrophanous no; colour variation two-colour; with colour at centre cinnamon; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment adnexed; maximum depth not recorded; number of complete lamellae 92; tears visible with x10 lens; white fimbriate edge present.
Stipe: 60–110 x 10–20 {median} x 15–25 {basal} mm; stipe Q 5.5–6.0; base bulbous; floccosity not recorded; rooting no; mycelial chords not recorded.
Context: texture firm; stipe interior stuffed; stipe flesh discolouring from base yes; slenderness measure 8.8; 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, limoniform; colour through microscope brown pale; guttulate no; papillate yes; Spore Code: O3; P1; P2; D4.
Basidia: 21.2–30.7 x 8.5–9.7 μm; ave. Q = 2.8; basidia spore nature not recorded.
Cheilocystidia: main shape cylindrical, lageniform, lanceolate, ventricose; special features not recorded; Cheilocystidia Ratios: A/M = 0.91; A/B = 0.58; B/M = 1.72.
Pleurocystidia: yes.
Ixocutis: epicutis thickness (measured from exsiccata) 90 μm; ixocutis maximum hyphae width 7 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis isodiametric up to 18 μm wide.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (10.5) 10.8–13.1 (13.5) 11.9 11.8 0.700 Width (µm) (6.4) 6.7–7.6 (7.7) 7.1 7.1 0.310 Q (1.47) 1.50–1.81 (1.89) 1.67 1.66 0.09 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (29) 31–48 (49) 39 39 5.88 Apex Width (3.3) 4.2–6.3 (6.8) 5.2 5.2 0.700 Median Width (4.0) 4.4–7.6 (8.0) 5.9 5.9 1.12 Basal Width (3.7) 5.6–13.4 (13.7) 9.9 9.9 2.43
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1950) --- °C --- °C --- mm Collection month (9/1950) --- °C --- °C --- mm Max month (1950) --- °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 | 65.0 | 54.60 | 1st/5 |
| Average length | 11.9 | 11.24 | 1st/5 |
| Average width | 7.1 | 6.96 | 1st–2nd/5 |
| Standard deviation of length | 0.7 | 0.66 | 3rd/5 |
| Standard deviation of width | 0.31 | 0.35 | 4th/5 |
| Median length | 11.8 | 11.22 | 1st/5 |
| Median width | 7.1 | 6.94 | 1st/5 |
| Minimum length | 10.5 | 9.96 | 1st/5 |
| Minimum width | 6.4 | 6.22 | 1st–2nd/5 |
| Low length | 10.8 | 10.24 | 1st/5 |
| Low width | 6.7 | 6.44 | 1st/5 |
| High length | 13.1 | 12.30 | 1st–2nd/5 |
| High width | 7.6 | 7.52 | 2nd–3rd/5 |
| Max length | 13.5 | 12.64 | 1st/5 |
| Max width | 7.7 | 7.88 | 4th/5 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3 | 50% of collections |
| Perispore loosening | P1; P2 | 75% of collections; 25% of collections |
| Dextrinoidity | D4 | 50% of collections |