Taxonomy
Collection 15601 is Hebeloma theobrominum.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 15601 was collected by A. Lebedev on 18th September 2016 in Off road between Polyana Narzanov and Elbrus, Karachay-Balkar, RUSSIAN FEDERATION (43.2468°N, 42.5889°E, altitude approximately 1905 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genus Pinus) was present.
The surrounding habitat was described as coniferous woodland with a substrate of acidic soil, 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 Caucasus mixed 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 Dfc (Cold, no dry season, cold summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 20–27 mm diameter; shape convex; margin characters smooth; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation unicolor; with colour at centre umber; and colour at margin pale cream; with remains of universal veil not recorded.
Lamellae: attachment emarginate; maximum depth up to 5 mm; number of complete lamellae 66; tears absent; white fimbriate edge not recorded.
Stipe: 22–30 x 6–9 {median} x 6–9 {basal} mm; stipe Q 2.4–4.3; base cylindrical; floccosity pruinose; rooting no; mycelial chords no.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base no; slenderness measure 4.1; smell raphanoid; taste not recorded.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid, fusoid; colour through microscope yellow brown; guttulate yes; papillate no; Spore Code: O2; P0; D3.
Basidia: 26.5–30.2 x 7.1–8.7 μm; ave. Q = 3.5; basidia spore nature not recorded.
Cheilocystidia: main shape clavate-lageniform or clavate-ventricose; special features clamped septa, septa; Cheilocystidia Ratios: A/M = 1.39; A/B = 0.96; B/M = 1.47.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 110 μm; ixocutis maximum hyphae width 6 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis cylindrical up to 13 μm wide.
Caulocystidia: caulocystidia maximum length 110 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (8.9) 9.1–10.4 (10.9) 9.7 9.7 0.440 Width (µm) (4.8) 5.0–5.6 (6.2) 5.2 5.2 0.200 Q (1.70) 1.73–2.02 (2.10) 1.86 1.86 0.1 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (26) 28–38 34 34 3.03 Apex Width (4.4) 4.5–7.2 5.6 5.3 0.840 Median Width (3.4) 3.5–4.9 (5.2) 4.1 4.0 0.5 Basal Width (3.9) 4.7–6.9 (7.4) 5.9 5.9 0.8
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (2016) 6.34 °C -5.10 °C 101.69 mm Collection month (9/2016) 11.91 °C -1.21 °C 124.08 mm Max month (2016) 18.79 °C 4.65 °C 160.96 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 | 121.0 | 61.60 | 1st/30 |
| Average length | 9.7 | 9.33 | 7th–10th/30 |
| Average width | 5.2 | 5.00 | 4th–10th/30 |
| Standard deviation of length | 0.44 | 0.54 | 22nd/24 |
| Standard deviation of width | 0.2 | 0.27 | 18th–22nd/24 |
| Median length | 9.7 | 9.32 | 7th–8th/24 |
| Median width | 5.2 | 5.04 | 5th–10th/24 |
| Minimum length | 8.9 | 8.07 | 1st/24 |
| Minimum width | 4.8 | 4.39 | 1st/23 |
| Low length | 9.1 | 8.49 | 3rd/24 |
| Low width | 5.0 | 4.62 | 1st/23 |
| High length | 10.4 | 10.17 | 9th–10th/24 |
| High width | 5.6 | 5.45 | 9th–12th/23 |
| Max length | 10.9 | 10.58 | 5th–10th/24 |
| Max width | 6.2 | 5.70 | 2nd–3rd/23 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O2 | 90% of collections |
| Perispore loosening | P0 | 90% of collections |
| Dextrinoidity | D3 | 93% of collections |