Taxonomy
Collection 1000281 (herbarium acc. no. NY 814865) is Hebeloma albidulum. It is the holotype of heterotypic synonym Hebeloma exiguifolium Murrill (1917).Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000281 was collected by F.S. Boughton, det: W.A. Murrill on 28th September 1915 in Pittsford, New York, UNITED STATES (approx. 43.0906°N, 77.515°W, altitude approximately 150 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as 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. 1.4: Forest – Temperate.
According to the GPS data the collection was in the Eastern Great Lakes lowland 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 Dfa (Cold, no dry season, hot summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: up to 40 mm diameter; shape convex, umbonate broadly; margin characters smooth; viscosity tacky when moist; spotting not recorded; 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 emarginate; maximum depth not recorded; number of complete lamellae 70; tears not recorded; white fimbriate edge present.
Stipe: 50 x 8 {median} x 13 {basal} mm; stipe Q 6.3; base bulbous; floccosity fibrillose; rooting not recorded; mycelial chords not recorded.
Context: texture firm; stipe interior stuffed; stipe flesh discolouring from base not recorded; slenderness measure 7.8; smell not recorded; 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 yellow brown; guttulate not recorded; papillate yes; Spore Code: O3; P2; P3; D3.
Basidia: 21.8–25.0 x 6.3–6.9 μm; ave. Q = 3.6; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate; special features not recorded; Cheilocystidia Ratios: A/M = 1.52; A/B = 1.56; B/M = 1.02.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 120 μm; ixocutis maximum hyphae width 6 μm; ixocutis hyphae encrustation yes; shape of trama elements beneath subcutis oblong, ovate, polygonal, pyriform, thickly sausage-shaped up to 14 μm wide.
Caulocystidia: caulocystidia maximum length 70 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (9.3) 9.4–11.4 (12.1) 10.3 10.3 0.610 Width (µm) (5.8) 6.2–7.1 (7.4) 6.7 6.7 0.320 Q (1.42) 1.43–1.70 (1.74) 1.55 1.54 0.08 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (35) 42–63 (75) 54 55 8.58 Apex Width (4.7) 5.3–9.3 (10.1) 7.4 7.3 1.150 Median Width (3.8) 3.9–6.4 (6.7) 5.0 4.9 0.82 Basal Width (3.1) 3.5–7.3 (7.4) 5.0 4.9 1.18
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1915) --- °C --- °C --- mm Collection month (9/1915) --- °C --- °C --- mm Max month (1915) --- °C --- °C --- 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 | 61.0 | 74.28 | 17th/25 |
| Average length | 10.3 | 11.06 | 23rd/25 |
| Average width | 6.7 | 6.84 | 17th–20th/25 |
| Standard deviation of length | 0.61 | 0.65 | 18th/25 |
| Standard deviation of width | 0.32 | 0.39 | 19th/25 |
| Median length | 10.3 | 11.10 | 23rd/25 |
| Median width | 6.7 | 6.85 | 17th–19th/25 |
| Minimum length | 9.3 | 9.50 | 15th–19th/25 |
| Minimum width | 5.8 | 5.87 | 13th–15th/25 |
| Low length | 9.4 | 10.02 | 22nd–23rd/25 |
| Low width | 6.2 | 6.22 | 14th–19th/25 |
| High length | 11.4 | 12.12 | 23rd/25 |
| High width | 7.1 | 7.47 | 20th–23rd/25 |
| Max length | 12.1 | 12.62 | 23rd/25 |
| Max width | 7.4 | 7.76 | 22nd–23rd/25 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O3 | 96% of collections |
| Perispore loosening | P2; P3 | 48% of collections; 100% of collections |
| Dextrinoidity | D3 | 88% of collections |