Taxonomy
Collection 1000337 (herbarium acc. no. TENN-F-037533) is the holotype of Hebeloma caulocystidiosum.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000337 was collected by L.R. Hesler on 10th October 1972 in Van Buren, Sparta, Fall Creek Falls St. Pk., Tennessee, UNITED STATES (approx. 35.6617°N, 85.3444°W, altitude approximately 500 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as not recorded.
According to the GPS data the collection was in the Appalachian mixed mesophytic 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 Cfa (Temperate, no dry season, hot summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 30–45 mm diameter; shape convex; margin characters not recorded; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation unicolor; with colour at centre pinkish buff; and colour at margin not recorded; with remains of universal veil not recorded.
Lamellae: attachment adnate, decurrent tooth, emarginate; maximum depth not recorded; number of complete lamellae 68; tears not recorded; white fimbriate edge present.
Stipe: 10–25 x 5–10 {median} x 5–10 {basal} mm; stipe Q 2.0–2.5; base cylindrical; floccosity fibrillose, pruinose at apex; rooting not recorded; mycelial chords not recorded.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base not recorded; slenderness measure 1.0; smell raphanoid; taste bitter, raphanoid.
Spore deposit colour: analysis not yet complete.
Exsiccata: dark.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid, limoniform; colour through microscope yellow, yellow brown; guttulate no; papillate yes; Spore Code: O2; O3; P1; D2; D3.
Basidia: 25.3–36.0 x 6.4–8.6 μm; ave. Q = 4.2; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, cylindrical, ventricose; special features not recorded; Cheilocystidia Ratios: A/M = 1.30; A/B = 1.18; B/M = 1.24.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 80 μm; ixocutis maximum hyphae width 4 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis cylindrical up to 14 μm wide.
Caulocystidia: caulocystidia maximum length 100 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (9.0) 9.4–11.4 (11.8) 10.6 10.7 0.610 Width (µm) (5.5) 5.9–6.8 (6.9) 6.4 6.4 0.320 Q (1.45) 1.48–1.86 (1.90) 1.66 1.64 0.1 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length 34–63 (74) 47 47 9.41 Apex Width (2.9) 3.6–5.7 (7.8) 4.7 4.7 0.720 Median Width (2.6) 3.1–4.3 (5.1) 3.6 3.5 0.55 Basal Width (2.2) 2.4–6.3 (7.6) 4.3 4.1 1.42
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1972) 18.75 °C 7.15 °C 146.10 mm Collection month (10/1972) 18.59 °C 6.80 °C 138.09 mm Max month (1972) 28.29 °C 16.37 °C 237.90 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 | 63.0 | 76.70 | 7th/10 |
| Average length | 10.6 | 10.62 | 5th–6th/10 |
| Average width | 6.4 | 6.27 | 1st–5th/10 |
| Standard deviation of length | 0.61 | 0.70 | 9th/10 |
| Standard deviation of width | 0.32 | 0.39 | 9th–10th/10 |
| Median length | 10.7 | 10.66 | 5th–6th/10 |
| Median width | 6.4 | 6.29 | 3rd–5th/10 |
| Minimum length | 9.0 | 9.06 | 5th–6th/10 |
| Minimum width | 5.5 | 5.24 | 1st–3rd/10 |
| Low length | 9.4 | 9.46 | 6th–8th/10 |
| Low width | 5.9 | 5.62 | 1st/10 |
| High length | 11.4 | 11.72 | 9th/10 |
| High width | 6.8 | 6.86 | 7th/10 |
| Max length | 11.8 | 12.24 | 8th–10th/10 |
| Max width | 6.9 | 7.10 | 7th–8th/10 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O2; O3 | 30% of collections; 90% of collections |
| Perispore loosening | P1 | 100% of collections |
| Dextrinoidity | D2; D3 | 40% of collections; 100% of collections |