Hebeloma.org: Collection HJB9940

Taxonomy

Collection 9940 (herbarium acc. no. K(M)121755) is Hebeloma velutipes.

Description

Collecting details

Collection 9940 was collected by D.A. Reid, det: H.J. Beker on 16th October 1955 in Ashridge, Hertfordshire, ENGLAND (51.7982°N, 0.5948°W, altitude approximately 185 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.
The surrounding habitat was described as deciduous parkland with a substrate of grassy 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. 14.5: Urban Areas.
According to the GPS data the collection was in the English Lowlands beech 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 Cfb (Temperate, no dry season, warm summer).

Macroscopic description
Cortina present: no.
Pileus: analysis not yet complete.
Lamellae: attachment not recorded; maximum depth not recorded; number of complete lamellae 60; tears absent; white fimbriate edge weak.
Stipe: size not recorded; stipe Q not recorded; base cylindrical; floccosity powdery; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure not recorded; smell not recorded; taste mild.
Spore deposit colour: analysis not yet complete.
Exsiccata: pale.

Microscopic description

Spores: shape amygdaloid; colour through microscope yellow; guttulate no; papillate weak; Spore Code: O3; P1; D2; D3.

Basidia: analysis not yet complete.

Cheilocystidia: main shape gently clavate, clavate-stipitate; special features none; Cheilocystidia Ratios: A/M = 1.73; A/B = 1.53; B/M = 1.16.

Pleurocystidia: no.

Ixocutis: epicutis thickness (measured from exsiccata) 150 μm; ixocutis maximum hyphae width 8 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis cylindrical.

Caulocystidia: analysis not yet complete.

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(10.2) 10.6–12.7 (13.2)	11.4	11.4	0.620
Width (µm)	(5.4) 5.6–6.5 (7.0)	6.0	6.0	0.300
Q	(1.59) 1.77–2.09 (2.13)	1.91	1.90	0.1

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	(35) 39–56 (59)	46	46	5.66
Apex Width	(5.0) 6.2–11.5 (12.6)	8.9	8.7	1.780
Median Width	(3.5) 4.2–5.9 (6.2)	4.9	4.9	0.62
Basal Width	(3.9) 4.1–6.9 (7.1)	5.7	5.7	0.98

Temperature calculation
Max temp Min temp Precipitation
Annualised average (1955) --- °C --- °C --- mm
Collection month (10/1955) --- °C --- °C --- mm
Max month (1955) --- °C --- °C --- mm

	Max temp	Min temp	Precipitation
Annualised average (1955)	--- °C	--- °C	--- mm
Collection month (10/1955)	--- °C	--- °C	--- mm
Max month (1955)	--- °C	--- °C	--- mm

Analyse this collection
- See this collection in our species identifier.
- See this collection's sequences in Genbank .

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	64.0	52.33	46^th–47^th/149
Average length	11.4	11.12	50^th–54^th/149
Average width	6.0	6.55	131^st–137^th/149
Standard deviation of length	0.62	0.70	82^nd–86^th/132
Standard deviation of width	0.3	0.33	69^th–78^th/132
Median length	11.4	11.06	36^th–41^st/132
Median width	6.0	6.55	111^st–119^th/132
Minimum length	10.2	9.61	28^th–33^rd/132
Minimum width	5.4	5.85	110^th–116^th/132
Low length	10.6	10.04	25^th–27^th/132
Low width	5.6	6.07	113^rd–120^th/132
High length	12.7	12.10	23^rd–31^st/132
High width	6.5	7.03	112^nd–117^th/132
Max length	13.2	12.59	30^th/132
Max width	7.0	7.31	92^nd–101^st/132

Spore feature	Value	Commonalities
Ornamentation	O3	31% of collections
Perispore loosening	P1	56% of collections
Dextrinoidity	D2; D3	29% of collections; 92% of collections