Taxonomy
Collection 11848 (herbarium acc. no. C-F-76210) is Hebeloma theobrominum.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 11848 was collected by J. Vesterholt (06-1095) on 9th November 2006 in Cala Violina NW of Grosseto, Tuscany, ITALY (approx. 42.83°N, 10.77°E, altitude approximately 15 m above sea level - Google maps). The ectomycorrhizal family Fagaceae (genus Quercus) was present.
The surrounding habitat was described as deciduous woodland, 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 Koppen climate code Csa (Temperate, dry summer, hot summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 24–30 mm diameter; shape convex; margin characters not recorded; viscosity tacky when moist; spotting no; hygrophanous no; colour variation unicolor; with colour at centre cinnamon, ochraceous; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment not recorded; maximum depth not recorded; number of complete lamellae 60; tears absent; white fimbriate edge present.
Stipe: 30–35 x 5–6 {median} x not recorded {basal} mm; stipe Q 5.8–6.0; base tapering; floccosity not recorded; rooting not recorded; mycelial chords not recorded.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base not recorded; slenderness measure 7.2; smell not recorded; taste not recorded.
Spore deposit colour: analysis not yet complete.
Exsiccata: rich brown color.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid; colour through microscope yellow pale; guttulate yes; papillate no; Spore Code: O1; O2; P0; D3; D4.
Basidia: 24.2–28.9 x 6.4–7.3 μm; ave. Q = 3.9; basidia spore nature not recorded.
Cheilocystidia: main shape cylindrical, clavate-lageniform or clavate-ventricose; special features septa, short; Cheilocystidia Ratios: A/M = 1.46; A/B = 1.15; B/M = 1.29.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 100 μm; ixocutis maximum hyphae width 4 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis isodiametric.
Caulocystidia: analysis not yet complete.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (8.0) 8.7–10.3 (10.5) 9.4 9.4 0.500 Width (µm) (4.6) 4.8–5.5 (5.7) 5.2 5.2 0.200 Q (1.54) 1.66–2.23 (3.00) 1.83 1.82 0.11 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (20) 28–37 (39) 33 33 3.93 Apex Width (4.3) 4.9–7.8 (9.6) 6.3 6.2 0.910 Median Width (3.7) 3.9–5.8 (5.9) 4.6 4.6 0.62 Basal Width (4.0) 4.4–7.3 (7.8) 5.9 5.9 0.95
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (2006) 20.48 °C 12.33 °C 37.81 mm Collection month (11/2006) 17.46 °C 10.87 °C 23.54 mm Max month (2006) 32.57 °C 22.04 °C 131.81 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 | 87.0 | 61.60 | 4th–5th/30 |
| Average length | 9.4 | 9.33 | 13th–16th/30 |
| Average width | 5.2 | 5.00 | 4th–10th/30 |
| Standard deviation of length | 0.5 | 0.54 | 14th–17th/24 |
| Standard deviation of width | 0.2 | 0.27 | 18th–22nd/24 |
| Median length | 9.4 | 9.32 | 11th/24 |
| Median width | 5.2 | 5.04 | 5th–10th/24 |
| Minimum length | 8.0 | 8.07 | 13th/24 |
| Minimum width | 4.6 | 4.39 | 2nd–6th/23 |
| Low length | 8.7 | 8.49 | 7th–11th/24 |
| Low width | 4.8 | 4.62 | 3rd–8th/23 |
| High length | 10.3 | 10.17 | 11th–13th/24 |
| High width | 5.5 | 5.45 | 13th–14th/23 |
| Max length | 10.5 | 10.58 | 15th/24 |
| Max width | 5.7 | 5.70 | 14th/23 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O1; O2 | 73% of collections; 90% of collections |
| Perispore loosening | P0 | 90% of collections |
| Dextrinoidity | D3; D4 | 93% of collections; 26% of collections |