Taxonomy
Collection 16795 (herbarium acc. no. TLXM 6157 (holotype), BR5020224873599V (isotype)) is the holotype of Hebeloma magnicystidiatum.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 16795 was collected by A. Estrada-Torres (T3093) on 29th August 1990 in Municipality of Totolac, Tepeticpac, Tlaxcala, MEXICO (approx. 19.3457°N, 98.2227°W, altitude approximately 2400 m above sea level - Google maps). The ectomycorrhizal families Pinaceae (genus Pinus) and Fagaceae (genus Quercus) were present.
The surrounding habitat was described as montane, subtropical woodland with a substrate of 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. 1.9: Forest – Subtropical/tropical moist montane.
According to the GPS data the collection was in the Trans-Mexican Volcanic Belt pine-oak 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 Coniferous Forests) and Koppen climate code Cwb (Temperate, dry winter, warm summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 19–26 mm diameter; shape convex; margin characters not recorded; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation two-colour; with colour at centre orange-brown, umber; and colour at margin pinkish buff; with remains of universal veil yes.
Lamellae: attachment adnexed, emarginate; maximum depth up to 5 mm; number of complete lamellae 60; tears not recorded; white fimbriate edge present.
Stipe: 10–21 x 4–6 {median} x 4–6 {basal} mm; stipe Q 2.5–3.5; base cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base yes; slenderness measure 2.1; smell raphanoid; 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 yellow brown; guttulate no; papillate yes; Spore Code: O3; P1; D1.
Basidia: 27.7–34.9 x 7.7–9.1 μm; ave. Q = 3.9; basidia spore nature not recorded.
Cheilocystidia: main shape capitate-stipitate; special features many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 2.58; A/B = 2.67; B/M = 0.95.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 110 μm; ixocutis maximum hyphae width 7 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis cylindrical, ellipsoid up to 17 μm wide.
Caulocystidia: caulocystidia maximum length 80 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (9.2) 9.7–11.6 (11.9) 10.5 10.5 0.620 Width (µm) (5.9) 6.4–7.6 (7.9) 7.0 7.0 0.420 Q 1.40–1.62 (1.66) 1.50 1.49 0.07 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (28) 34–72 (73) 55 56 11.95 Apex Width (4.6) 6.1–14.3 (17.0) 9.7 9.1 2.610 Median Width (2.3) 2.5–31.9 (34.2) 7.3 3.7 9.83 Basal Width (2.5) 2.6–8.3 4.3 3.8 1.76
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1990) 22.86 °C 7.65 °C 73.49 mm Collection month (8/1990) 22.78 °C 9.37 °C 116.58 mm Max month (1990) 26.26 °C 10.44 °C 173.85 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 | 44.0 | 44.00 | 1st/1 |
| Average length | 10.5 | 10.50 | 1st/1 |
| Average width | 7.0 | 7.00 | 1st/1 |
| Standard deviation of length | 0.62 | 0.62 | 1st/1 |
| Standard deviation of width | 0.42 | 0.42 | 1st/1 |
| Median length | 10.5 | 10.50 | 1st/1 |
| Median width | 7.0 | 7.00 | 1st/1 |
| Minimum length | 9.2 | 9.20 | 1st/1 |
| Minimum width | 5.9 | 5.90 | 1st/1 |
| Low length | 9.7 | 9.70 | 1st/1 |
| Low width | 6.4 | 6.40 | 1st/1 |
| High length | 11.6 | 11.60 | 1st/1 |
| High width | 7.6 | 7.60 | 1st/1 |
| Max length | 11.9 | 11.90 | 1st/1 |
| Max width | 7.9 | 7.90 | 1st/1 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3 | 100% of collections |
| Perispore loosening | P1 | 100% of collections |
| Dextrinoidity | D1 | 100% of collections |