Hebeloma.org: Collection HJB9293

Taxonomy

Collection 9293 is Hebeloma theobrominum.

Description

Collecting details

Collection 9293 was collected by H.J. Beker on 24th September 2002 in Roudsea, Westmorland, ENGLAND (54.2356°N, 3.0295°W, altitude approximately 15 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as mixed woodland with a substrate of bare, calcareous 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 Celtic broadleaf 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 present.
Stipe: size not recorded; stipe Q not recorded; base bulbous; floccosity not recorded; rooting no; mycelial chords not recorded.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure not recorded; smell raphanoid; taste not recorded.
Spore deposit colour: analysis not yet complete.
Exsiccata: rich brown color.

Microscopic description
Spores: shape amygdaloid; colour through microscope yellow pale; guttulate yes; papillate weak; Spore Code: O1; P0; D3.
Basidia: analysis not yet complete.
Cheilocystidia: main shape capitate, clavate-lageniform or clavate-ventricose, lageniform; special features none; Cheilocystidia Ratios: A/M = 1.66; A/B = 1.20; B/M = 1.41.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (8.4) 9.2–10.6 (10.9) 9.8 9.7 0.500
Width (µm) (4.5) 4.8–5.7 (5.9) 5.2 5.2 0.310
Q (1.62) 1.71–2.10 (2.14) 1.90 1.92 0.13

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length (30) 31–42 37 37 4.4
Apex Width (3.7) 3.9–7.6 (8.8) 5.7 5.7 1.160
Median Width 3.8–4.5 (4.6) 4.1 4.1 0.25
Basal Width (4.9) 5.0–7.3 (8.2) 5.8 5.5 0.96

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(8.4) 9.2–10.6 (10.9)	9.8	9.7	0.500
Width (µm)	(4.5) 4.8–5.7 (5.9)	5.2	5.2	0.310
Q	(1.62) 1.71–2.10 (2.14)	1.90	1.92	0.13

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	(30) 31–42	37	37	4.4
Apex Width	(3.7) 3.9–7.6 (8.8)	5.7	5.7	1.160
Median Width	3.8–4.5 (4.6)	4.1	4.1	0.25
Basal Width	(4.9) 5.0–7.3 (8.2)	5.8	5.5	0.96

Temperature calculation
Max temp Min temp Precipitation
Annualised average (2002) 12.90 °C 6.32 °C 156.98 mm
Collection month (9/2002) 17.08 °C 9.33 °C 68.26 mm
Max month (2002) 19.37 °C 11.93 °C 284.11 mm

	Max temp	Min temp	Precipitation
Annualised average (2002)	12.90 °C	6.32 °C	156.98 mm
Collection month (9/2002)	17.08 °C	9.33 °C	68.26 mm
Max month (2002)	19.37 °C	11.93 °C	284.11 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	47.0	61.60	27^th/30
Average length	9.8	9.33	5^th–6^th/30
Average width	5.2	5.00	4^th–10^th/30
Standard deviation of length	0.5	0.54	14^th–17^th/24
Standard deviation of width	0.31	0.27	6^th/24
Median length	9.7	9.32	7^th–8^th/24
Median width	5.2	5.04	5^th–10^th/24
Minimum length	8.4	8.07	8^th–9^th/24
Minimum width	4.5	4.39	9^th–12^th/23
Low length	9.2	8.49	2^nd/24
Low width	4.8	4.62	3^rd–8^th/23
High length	10.6	10.17	5^th–6^th/24
High width	5.7	5.45	4^th–8^th/23
Max length	10.9	10.58	5^th–10^th/24
Max width	5.9	5.70	6^th–10^th/23

Spore feature	Value	Commonalities
Ornamentation	O1	73% of collections
Perispore loosening	P0	90% of collections
Dextrinoidity	D3	93% of collections