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Taxonomy

Collection 1000583 (herbarium acc. no. FLAS-F-17941) is Hebeloma albidulum. It is the holotype of heterotypic synonym Cortinarius albiceps Murrill (1942).

Description

  • arrow_drop_downarrow_drop_upCollecting details

    Collection 1000583 was collected by W.A. Murrill on 15th July 1938 in Alachua, Gainesville; Magnesia Springs , Florida, UNITED STATES (29.5825°N, 82.1492°W, altitude approximately 40 m above sea level - Google maps). No ectomycorrhizal plants were recorded.

    The surrounding habitat was described as deciduous woodland with a substrate of litter, 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 Southeast US conifer savannas 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 Grasslands, Savannas & Shrublands) and Koppen climate code Cfa (Temperate, no dry season, hot summer).

  • arrow_drop_downarrow_drop_upMacroscopic description

    Cortina present: no.

    Pileus: 20–30 mm diameter; shape convex; margin characters involute, smooth; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation unicolor; 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 60; tears not recorded; white fimbriate edge not recorded.

    Stipe: 40 x 5 {median} x 12 {basal} mm; stipe Q 8.0; base bulbous; floccosity floccose at apex, velute; rooting no; mycelial chords not recorded.

    Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure 16.0; smell none; 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 grey yellow, yellow pale; guttulate not recorded; papillate very strongly; Spore Code: O3; O4; P3; D2; D3.

    Basidia: 19.9–27.2 x 5.9–7.9 μm; ave. Q = 3.5; basidia spore nature not recorded.

    Cheilocystidia: main shape gently clavate, clavate-lageniform or clavate-ventricose; special features many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 1.34; A/B = 1.50; B/M = 0.95.

    Pleurocystidia: no.

    Ixocutis: analysis not yet complete.

    Caulocystidia: analysis not yet complete.

    Spore(min) 5%-95% (max)meanmedianS.D.
    Length (µm)9.3–10.9 (11.6)10.010.00.470
    Width (µm)(5.3) 5.5–7.1 (7.7)6.56.50.500
    Q(1.26) 1.38–1.78 (1.88)1.561.550.13

    Cheilocystidium (µm)(min) 5%-95% (max)meanmedianS.D.
    Length(36) 39–51 (54)45454.25
    Apex Width5.5–7.7 (7.9)6.36.30.700
    Median Width(3.3) 3.7–5.9 (6.4)4.84.80.83
    Basal Width2.9–5.6 (6.3)4.44.60.95
  • arrow_drop_downarrow_drop_upTemperature calculation
    Max tempMin tempPrecipitation
    Annualised average (1938)--- °C--- °C--- mm
    Collection month (7/1938)--- °C--- °C--- mm
    Max month (1938)--- °C--- °C--- mm

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 measurementsMy valueSpecies mean valuePosition
Count 59.0 74.28 18th–20th/25
Average length 10.0 11.06 25th/25
Average width 6.5 6.84 22nd–25th/25
Standard deviation of length 0.47 0.65 24th/25
Standard deviation of width 0.5 0.39 3rd/25
Median length 10.0 11.10 25th/25
Median width 6.5 6.85 22nd–25th/25
Minimum length 9.3 9.50 15th–19th/25
Minimum width 5.3 5.87 25th/25
Low length 9.3 10.02 24th/25
Low width 5.5 6.22 25th/25
High length 10.9 12.12 25th/25
High width 7.1 7.47 20th–23rd/25
Max length 11.6 12.62 25th/25
Max width 7.7 7.76 15th–16th/25
Spore featureValueCommonalities
Ornamentation O3; O4 96% of collections; 80% of collections
Perispore loosening P3 100% of collections
Dextrinoidity D2; D3 8% of collections; 88% of collections