Hebeloma.org: Collection HJB10271

Taxonomy

Collection 10271 is Hebeloma velutipes.

Description

Collecting details

Collection 10271 was collected by H.J. Beker on 7th October 2004 in Foret de Soignes, Brussels, BELGIUM (50.791°N, 4.4016°E, altitude approximately 145 m above sea level - Google maps). The ectomycorrhizal family Betulaceae (genus Carpinus) was present.
The surrounding habitat was described as deciduous woodland with a substrate of decomposed 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 European Atlantic mixed 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: 25–43 mm diameter; shape umbonate broadly; margin characters smooth; viscosity tacky when moist; spotting no; hygrophanous not recorded; colour variation unicolor; with colour at centre warm buff, buff-yellow; and colour at margin not recorded; with remains of universal veil not recorded.
Lamellae: attachment adnate, emarginate; maximum depth up to 4 mm; number of complete lamellae 58; tears visible with x10 lens; white fimbriate edge present.
Stipe: 30–48 x 5–6 {median} x 7–12 {basal} mm; stipe Q 6.0–8.0; base bulbous; floccosity floccose; rooting no; mycelial chords no.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base no; slenderness measure 6.3; smell raphanoid; taste raphanoid.
Spore deposit colour: brownish olive.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape amygdaloid; colour through microscope yellow brown; guttulate yes; papillate no; Spore Code: O2; P0; P1; D2; D3.
Basidia: 32.1 x 7.9–8.9 μm; ave. Q = 3.8; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, clavate-lageniform or clavate-ventricose; special features clamped septa, geniculate; Cheilocystidia Ratios: A/M = 1.47; A/B = 1.73; B/M = 0.86.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (9.3) 10.0–11.6 (11.8) 10.8 10.8 0.650
Width (µm) 5.8–7.1 6.4 6.4 0.400
Q (1.45) 1.51–1.91 (1.97) 1.68 1.68 0.13

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length 61–64 (65) 63 62 1.52
Apex Width (6.1) 6.9–9.9 (10.5) 8.4 8.4 1.100
Median Width 5.4–6.3 5.8 5.7 0.47
Basal Width (4.3) 4.4–5.3 (5.4) 4.9 5.0 0.45

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(9.3) 10.0–11.6 (11.8)	10.8	10.8	0.650
Width (µm)	5.8–7.1	6.4	6.4	0.400
Q	(1.45) 1.51–1.91 (1.97)	1.68	1.68	0.13

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	61–64 (65)	63	62	1.52
Apex Width	(6.1) 6.9–9.9 (10.5)	8.4	8.4	1.100
Median Width	5.4–6.3	5.8	5.7	0.47
Basal Width	(4.3) 4.4–5.3 (5.4)	4.9	5.0	0.45

Temperature calculation
Max temp Min temp Precipitation
Annualised average (2004) 14.72 °C 6.55 °C 70.01 mm
Collection month (10/2004) 15.60 °C 7.90 °C 52.82 mm
Max month (2004) 23.60 °C 14.16 °C 127.34 mm

	Max temp	Min temp	Precipitation
Annualised average (2004)	14.72 °C	6.55 °C	70.01 mm
Collection month (10/2004)	15.60 °C	7.90 °C	52.82 mm
Max month (2004)	23.60 °C	14.16 °C	127.34 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	22.0	52.33	121^st/149
Average length	10.8	11.12	93^rd–103^rd/149
Average width	6.4	6.55	93^rd–112^nd/149
Standard deviation of length	0.65	0.70	78^th–79^th/132
Standard deviation of width	0.4	0.33	23^rd–26^th/132
Median length	10.8	11.06	80^th–89^th/132
Median width	6.4	6.55	80^th–99^th/132
Minimum length	9.3	9.61	83^rd–86^th/132
Minimum width	5.8	5.85	70^th–84^th/132
Low length	10.0	10.04	75^th–79^th/132
Low width	5.8	6.07	94^th–106^th/132
High length	11.6	12.10	94^th–100^th/132
High width	7.1	7.03	48^th–61^st/132
Max length	11.8	12.59	105^th–106^th/132
Max width	7.1	7.31	83^rd–91^st/132

Spore feature	Value	Commonalities
Ornamentation	O2	90% of collections
Perispore loosening	P0; P1	75% of collections; 56% of collections
Dextrinoidity	D2; D3	29% of collections; 92% of collections