Taxonomy
Collection 1000435 (herbarium acc. no. MICH 10778) is Hebeloma alpinicola. It is the holotype of heterotypic synonym Hebeloma nigromaculatum A.H. Sm., V.S. Evenson & Mitchel (1983).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000435 was collected by A.H. Smith (19314) on 1st October 1944 in Clackamas, Rhododendron, Oregon, UNITED STATES (approx. 45.3297°N, 121.91°W, altitude approximately 495 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genera Pinus and Tsuga) was present.
The surrounding habitat was described as not recorded with a substrate of mossy, sandy soil.
According to the GPS data the collection was in the Central-Southern Cascades 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 Csb (Temperate, dry summer, warm summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: yes.
Pileus: 20–40 mm diameter; shape convex, umbonate weakly; margin characters involute; 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 not recorded; maximum depth not recorded; number of complete lamellae 36; tears not recorded; white fimbriate edge not recorded.
Stipe: 30–50 x 2–4 {median} x 2–5 {basal} mm; stipe Q 12.0–12.5; base clavate, cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base very strongly; slenderness measure 16.8; smell raphanoid; taste raphanoid.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape ellipsoid, ovoid; colour through microscope yellow, yellow brown; guttulate no; papillate no; Spore Code: O1; P0; D0.
Basidia: 22.7–26.1 x 7.0–7.5 μm; ave. Q = 3.5; basidia spore nature not recorded.
Cheilocystidia: main shape cylindrical, lageniform, ventricose; special features many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 1.01; A/B = 0.59; B/M = 1.75.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (7.4) 8.4–10.5 (11.3) 9.5 9.5 0.650 Width (µm) (4.8) 5.1–6.2 (6.6) 5.7 5.8 0.350 Q (1.37) 1.48–1.79 (1.93) 1.66 1.66 0.1 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length 42–65 (72) 51 50 8.54 Apex Width (3.6) 3.8–5.6 (5.7) 4.7 5.0 0.740 Median Width (3.0) 3.5–6.8 (7.0) 5.0 4.9 1.19 Basal Width (5.6) 6.6–10.1 (10.6) 8.3 8.2 1.33
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1944) --- °C --- °C --- mm Collection month (10/1944) --- °C --- °C --- mm Max month (1944) --- °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 | 126.0 | 53.89 | 1st/53 |
| Average length | 9.5 | 9.58 | 24th–32nd/54 |
| Average width | 5.7 | 5.72 | 28th–34th/54 |
| Standard deviation of length | 0.65 | 0.66 | 28th/50 |
| Standard deviation of width | 0.35 | 0.34 | 22nd–24th/50 |
| Median length | 9.5 | 9.62 | 25th–29th/50 |
| Median width | 5.8 | 5.75 | 18th–25th/50 |
| Minimum length | 7.4 | 8.14 | 49th–51st/51 |
| Minimum width | 4.8 | 5.04 | 39th–42nd/51 |
| Low length | 8.4 | 8.57 | 31st–35th/51 |
| Low width | 5.1 | 5.25 | 34th–42nd/51 |
| High length | 10.5 | 10.64 | 30th–32nd/51 |
| High width | 6.2 | 6.29 | 30th–38th/51 |
| Max length | 11.3 | 11.00 | 15th–16th/51 |
| Max width | 6.6 | 6.56 | 19th–27th/51 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O1 | 100% of collections |
| Perispore loosening | P0 | 100% of collections |
| Dextrinoidity | D0 | 98% of collections |