Hebeloma.org: Collection HJB19933

Taxonomy

Collection 19933 is Hebeloma olympianum.

Description

Collecting details

Collection 19933 was collected by N. Siegel (4608) on 20th October 2019 in South of Ranger Creek Airstrip, at Buck Creek, Pierce Co., Washington, UNITED STATES (approx. 47.0069°N, 121.5341°W, altitude approximately 800 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genera Pseudotsuga, Abies and Tsuga) was present.
The surrounding habitat was described as campsite with a substrate of nutrient-enriched 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 Central-Southern Cascades 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 Conifer Forests) and Koppen climate code Dsb (Cold, dry summer, warm summer).

Macroscopic description
Cortina present: no.
Pileus: 9–47 mm diameter; shape convex; margin characters involute, smooth; viscosity tacky when moist; spotting not recorded; hygrophanous no; colour variation unicolor; with colour at centre orange-brown; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth not recorded; number of complete lamellae 58; tears absent; white fimbriate edge not recorded.
Stipe: 31–53 x 3–9 {median} x 5–9 {basal} mm; stipe Q 5.9–8.9; base clavate; floccosity pruinose at apex; rooting yes; mycelial chords yes.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base no; slenderness measure 18.6; smell earthy; taste mild.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape amygdaloid; colour through microscope not recorded; guttulate not recorded; papillate no; Spore Code: O2; P2; D3.
Basidia: 23.0–25.1 x 6.0–6.5 μm; ave. Q = 3.8; basidia spore nature not recorded.
Cheilocystidia: main shape cylindrical; special features not recorded; Cheilocystidia Ratios: A/M = 0.97; A/B = 0.90; B/M = 1.10.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (7.1) 7.6–9.7 (10.2) 8.7 8.7 0.650
Width (µm) (4.5) 4.8–6.0 (6.4) 5.4 5.5 0.370
Q (1.41) 1.43–1.75 (1.98) 1.59 1.60 0.1

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length 13–29 (31) 21 21 4.84
Apex Width 3.4–5.7 (5.8) 4.5 4.5 0.710
Median Width (3.2) 3.5–5.9 (6.0) 4.7 4.7 0.7
Basal Width (3.6) 4.1–6.0 (6.7) 5.0 5.1 0.76

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(7.1) 7.6–9.7 (10.2)	8.7	8.7	0.650
Width (µm)	(4.5) 4.8–6.0 (6.4)	5.4	5.5	0.370
Q	(1.41) 1.43–1.75 (1.98)	1.59	1.60	0.1

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	13–29 (31)	21	21	4.84
Apex Width	3.4–5.7 (5.8)	4.5	4.5	0.710
Median Width	(3.2) 3.5–5.9 (6.0)	4.7	4.7	0.7
Basal Width	(3.6) 4.1–6.0 (6.7)	5.0	5.1	0.76

Temperature calculation
Max temp Min temp Precipitation
Annualised average (2019) 8.71 °C 0.78 °C 139.37 mm
Collection month (10/2019) 7.70 °C -0.34 °C 208.69 mm
Max month (2019) 19.48 °C 8.99 °C 331.90 mm

	Max temp	Min temp	Precipitation
Annualised average (2019)	8.71 °C	0.78 °C	139.37 mm
Collection month (10/2019)	7.70 °C	-0.34 °C	208.69 mm
Max month (2019)	19.48 °C	8.99 °C	331.90 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	108.0	73.44	1^st/16
Average length	8.7	8.87	13^th/16
Average width	5.4	5.49	6^th–11^th/16
Standard deviation of length	0.65	0.59	4^th/16
Standard deviation of width	0.37	0.35	5^th–8^th/16
Median length	8.7	8.94	13^th/16
Median width	5.5	5.53	5^th–8^th/16
Minimum length	7.1	7.38	13^th–15^th/16
Minimum width	4.5	4.49	6^th–10^th/16
Low length	7.6	7.82	13^th–14^th/16
Low width	4.8	4.89	8^th–14^th/16
High length	9.7	9.71	6^th–10^th/16
High width	6.0	6.04	7^th–10^th/16
Max length	10.2	10.09	6^th/16
Max width	6.4	6.25	5^th–8^th/16

Spore feature	Value	Commonalities
Ornamentation	O2	100% of collections
Perispore loosening	P2	100% of collections
Dextrinoidity	D3	100% of collections