Taxonomy
Collection 1000393 (herbarium acc. no. F C0004354F) is Hebeloma sordidulum. It is the holotype of heterotypic synonym Hebeloma gomezii Singer (1983).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000393 was collected by R. Singer, L.D. Gomez, det: R. Singer on 25th July 1981 in Guanacaste, Santa Rosa National Park , COSTA RICA (approx. 10.8379°N, 85.7051°W, altitude approximately 250 m above sea level - Google maps). The ectomycorrhizal family Fagaceae (genus Quercus) was present.
The surrounding habitat was described as mixed but mainly deciduous, subtropical woodland with a substrate of sandy, shallow 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. 1.5: Forest – Subtropical/tropical dry.
According to the GPS data the collection was in the Central American dry 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: Tropical & Subtropical Dry Broadleaf Forests) and Koppen climate code Aw (Tropical, savannah).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: up to 38 mm diameter; shape convex; margin characters not recorded; viscosity tacky when moist; spotting no; hygrophanous not recorded; colour variation two-colour; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil not recorded.
Lamellae: attachment adnate, emarginate; maximum depth not recorded; number of complete lamellae 72; tears absent; white fimbriate edge present.
Stipe: 32–55 x 5–6 {median} x 5 {basal} mm; stipe Q 6.4–9.2; base cylindrical, tapering; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base not recorded; slenderness measure 9.3; smell raphanoid; taste raphanoid.
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 yellow brown; guttulate no; papillate very strongly; Spore Code: O3; P1; P2; D1; D2.
Basidia: 21.8–26.0 x 6.6–8.0 μm; ave. Q = 3.3; basidia spore nature not recorded.
Cheilocystidia: main shape capitate-stipitate, clavate-stipitate, clavate-lageniform or clavate-ventricose; special features median thickening, sinuate; Cheilocystidia Ratios: A/M = 1.85; A/B = 1.36; B/M = 1.45.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 90 μm; ixocutis maximum hyphae width 5 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis thickly sausage-shaped up to 12 μm wide.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) 10.0–11.6 (13.8) 10.6 10.4 0.560 Width (µm) (5.1) 5.3–6.5 (7.0) 6.0 6.0 0.390 Q (1.45) 1.58–2.01 (2.13) 1.77 1.74 0.14 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (30) 32–56 (64) 44 43 8.88 Apex Width (4.9) 5.4–9.3 (10.7) 7.4 7.5 1.240 Median Width (2.4) 2.6–4.8 (5.0) 3.7 3.7 0.7 Basal Width (2.9) 3.6–6.9 (8.4) 5.2 5.0 1.28
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1981) 30.90 °C 20.32 °C 170.58 mm Collection month (7/1981) 30.39 °C 21.36 °C 148.41 mm Max month (1981) 33.41 °C 21.36 °C 433.36 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 | 93.0 | 58.85 | 7th–8th/47 |
| Average length | 10.6 | 11.68 | 47th/47 |
| Average width | 6.0 | 6.31 | 41st–44th/47 |
| Standard deviation of length | 0.56 | 0.79 | 43rd–44th/47 |
| Standard deviation of width | 0.39 | 0.37 | 18th–21st/47 |
| Median length | 10.4 | 11.67 | 47th/47 |
| Median width | 6.0 | 6.32 | 39th–43rd/47 |
| Minimum length | 10.0 | 9.97 | 19th–28th/47 |
| Minimum width | 5.1 | 5.42 | 35th–39th/47 |
| Low length | 10.0 | 10.47 | 43rd–44th/47 |
| Low width | 5.3 | 5.76 | 43rd–45th/47 |
| High length | 11.6 | 12.91 | 47th/47 |
| High width | 6.5 | 6.88 | 41st–43rd/47 |
| Max length | 13.8 | 13.47 | 11th–16th/47 |
| Max width | 7.0 | 7.12 | 20th–31st/47 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3 | 82% of collections |
| Perispore loosening | P1; P2 | 93% of collections; 27% of collections |
| Dextrinoidity | D1; D2 | 10% of collections; 100% of collections |