Hebeloma.org: Collection HJB16687

Taxonomy

Collection 16687 (herbarium acc. no. C-F-103584) is Hebeloma arcticum.

Description

Collecting details

Collection 16687 was collected by T. Borgen (16.095) on 9th August 2016 in Kangerlussuaq, Ringsøen, Ringsødalen, W, GREENLAND (approx. 66.9853°N, 50.9464°W, altitude approximately 180 m above sea level - Google maps). The ectomycorrhizal family Salicaceae (genus Salix) was present.
The surrounding habitat was described as arctic lakeside with a substrate of sandy 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. 5.10: Wetlands (inland) – Tundra wetlands (inc. pools and temporary waters from snowmelt).
According to the GPS data the collection was in the Kalaallit Nunaat Arctic steppe 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: Tundra) and Koppen climate code BSk (Arid, steppe, cold).

Macroscopic description
Cortina present: no.
Pileus: not recorded diameter; shape not recorded; margin characters not recorded; viscosity tacky when moist; spotting not recorded; hygrophanous no; colour variation not recorded; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth not recorded; number of complete lamellae 42; tears absent; white fimbriate edge very strong.
Stipe: size not recorded; stipe Q not recorded; base cylindrical; floccosity fibrillose; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure not recorded; smell raphanoid; taste mild.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape amygdaloid, ellipsoid, ovoid; colour through microscope not recorded; guttulate not recorded; papillate no; Spore Code: O1; P0; D2; D3.
Basidia: 28.8–34.7 x 8.3–10.3 μm; ave. Q = 3.5; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, clavate-stipitate, clavate-lageniform or clavate-ventricose; special features apical thickening, clamped septa, median thickening; Cheilocystidia Ratios: A/M = 1.71; A/B = 1.37; B/M = 1.32.
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) 9.7–12.6 (13.2) 11.0 10.8 0.850
Width (µm) (5.4) 5.7–7.3 (7.6) 6.5 6.5 0.530
Q (1.51) 1.56–1.88 (1.91) 1.69 1.67 0.09

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length 47–69 (75) 57 55 7.63
Apex Width (5.5) 6.0–8.9 (9.2) 7.4 7.4 1.100
Median Width (3.0) 3.3–5.9 (6.4) 4.4 4.2 0.89
Basal Width 3.4–7.4 (7.7) 5.7 5.9 1.35

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(9.3) 9.7–12.6 (13.2)	11.0	10.8	0.850
Width (µm)	(5.4) 5.7–7.3 (7.6)	6.5	6.5	0.530
Q	(1.51) 1.56–1.88 (1.91)	1.69	1.67	0.09

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	47–69 (75)	57	55	7.63
Apex Width	(5.5) 6.0–8.9 (9.2)	7.4	7.4	1.100
Median Width	(3.0) 3.3–5.9 (6.4)	4.4	4.2	0.89
Basal Width	3.4–7.4 (7.7)	5.7	5.9	1.35

Temperature calculation
Max temp Min temp Precipitation
Annualised average (2016) 1.85 °C -6.24 °C 15.45 mm
Collection month (8/2016) 14.33 °C 5.06 °C 18.59 mm
Max month (2016) 16.17 °C 6.63 °C 26.24 mm

	Max temp	Min temp	Precipitation
Annualised average (2016)	1.85 °C	-6.24 °C	15.45 mm
Collection month (8/2016)	14.33 °C	5.06 °C	18.59 mm
Max month (2016)	16.17 °C	6.63 °C	26.24 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	46.0	54.73	8^th/11
Average length	11.0	11.40	9^th/11
Average width	6.5	6.60	6^th–9^th/11
Standard deviation of length	0.85	0.78	4^th/11
Standard deviation of width	0.53	0.40	1^st/11
Median length	10.8	11.44	10^th–11^th/11
Median width	6.5	6.62	8^th–9^th/11
Minimum length	9.3	9.69	9^th–10^th/11
Minimum width	5.4	5.69	8^th–10^th/11
Low length	9.7	10.13	10^th/11
Low width	5.7	5.97	9^th–10^th/11
High length	12.6	12.62	5^th–6^th/11
High width	7.3	7.23	5^th/11
Max length	13.2	13.05	5^th/11
Max width	7.6	7.46	2^nd–5^th/11

Spore feature	Value	Commonalities
Ornamentation	O1	100% of collections
Perispore loosening	P0	100% of collections
Dextrinoidity	D2; D3	72% of collections; 81% of collections