Taxonomy
Collection 12019 (herbarium acc. no. BR BR-MYCO 173982-61 (holotype), C C-F-90149 (isotype)) is the holotype of Hebeloma louiseae.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 12019 was collected by H.J. Beker, M.L. Beker on 17th August 2007 in Ossian, SVALBARD (78.9261°N, 12.4543°E, altitude approximately 5 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.
The surrounding habitat was described as arctic, coastal tundra with a substrate of grassy, mossy 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. 4.1: Grassland – Tundra.
According to the GPS data the collection was in the Koppen climate code ET (Polar, tundra).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: up to 7 mm diameter; shape umbonate broadly; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous no; colour variation unicolor; with colour at centre clay-buff; and colour at margin greyish pink; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth up to 2 mm; number of complete lamellae 36; tears absent; white fimbriate edge present.
Stipe: 12–15 x 3 {median} x 3 {basal} mm; stipe Q 4.0–5.0; base clavate, cylindrical; floccosity pruinose; rooting no; mycelial chords no.
Context: texture firm; stipe interior stuffed; stipe flesh discolouring from base no; slenderness measure 9.0; smell none; taste not recorded.
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 brown; guttulate yes; papillate yes; Spore Code: O1; O2; P0; D0.
Basidia: 41.5–56.3 x 9.2–11.6 μm; ave. Q = 4.6; basidia spore nature not recorded.
Cheilocystidia: main shape clavate-stipitate; special features rostrate, septa, sinuate; Cheilocystidia Ratios: A/M = 2.01; A/B = 2.25; B/M = 0.92.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 100 μm; ixocutis maximum hyphae width 6 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis isodiametric, thickly sausage-shaped.
Caulocystidia: caulocystidia maximum length 75 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (11.2) 11.6–14.4 (14.9) 12.8 12.7 0.820 Width (µm) (6.8) 6.9–8.6 (8.9) 7.7 7.7 0.530 Q (1.40) 1.50–1.80 (1.86) 1.66 1.67 0.1 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (35) 44–76 (80) 57 55 10.76 Apex Width (6.5) 7.9–12.3 (14.1) 9.9 9.7 1.480 Median Width (4.4) 4.8–6.5 (6.9) 5.4 5.3 0.59 Basal Width (3.2) 4.2–5.7 (5.9) 4.9 5.0 0.6
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (2007) 0.92 °C -3.14 °C 35.63 mm Collection month (8/2007) 5.21 °C 1.99 °C 37.87 mm Max month (2007) 5.21 °C 2.24 °C 97.49 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 | 69.0 | 59.75 | 3rd/8 |
| Average length | 12.8 | 12.49 | 2nd/8 |
| Average width | 7.7 | 7.34 | 1st/8 |
| Standard deviation of length | 0.82 | 0.81 | 5th/8 |
| Standard deviation of width | 0.53 | 0.44 | 1st–2nd/8 |
| Median length | 12.7 | 12.46 | 2nd–3rd/8 |
| Median width | 7.7 | 7.35 | 1st/8 |
| Minimum length | 11.2 | 10.74 | 1st/8 |
| Minimum width | 6.8 | 6.42 | 1st/8 |
| Low length | 11.6 | 11.14 | 1st/8 |
| Low width | 6.9 | 6.71 | 3rd–4th/8 |
| High length | 14.4 | 13.80 | 2nd/8 |
| High width | 8.6 | 8.07 | 1st/8 |
| Max length | 14.9 | 14.49 | 2nd/8 |
| Max width | 8.9 | 8.38 | 1st/8 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O1; O2 | 75% of collections; 75% of collections |
| Perispore loosening | P0 | 100% of collections |
| Dextrinoidity | D0 | 12% of collections |