Hebeloma.org: Collection HJB1000491

Taxonomy

Collection 1000491 (herbarium acc. no. MICH 10813) is Hebeloma olympianum. It is the holotype of heterotypic synonym Hebeloma trinidadense A.H. Sm., V.S. Evenson & Mitchel (1983).

Description

Collecting details

Collection 1000491 was collected by A.H. Smith (57047) on 24th December 1956 in Trinidad, Humboldt County, California, UNITED STATES (approx. 41.0595°N, 124.1419°W, altitude approximately 60 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genus Picea) was present.
The surrounding habitat was described as shrubland 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. 3.4: Shrubland –Temperate.
According to the GPS data the collection was in the Northern California coastal 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 Csb (Temperate, dry summer, warm summer).

Macroscopic description
Cortina present: no.
Pileus: 30–90 mm diameter; shape convex; margin characters fibrillose, involute; viscosity tacky when moist; spotting not recorded; hygrophanous no; colour variation unicolor; with colour at centre brownish olive, yellowish brown; and colour at margin not recorded; with remains of universal veil yes.
Lamellae: attachment adnate; maximum depth not recorded; number of complete lamellae 36; tears absent; white fimbriate edge weak.
Stipe: 40–80 x 5–10 {median} x 5–10 {basal} mm; stipe Q 8.0; base cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords yes.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base yes; slenderness measure 8.9; smell none; taste none.
Spore deposit colour: yellowish brown.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape amygdaloid, limoniform; colour through microscope not recorded; guttulate not recorded; papillate yes; Spore Code: O2; P2; D3.
Basidia: 21.9–32.9 x 4.8–7.0 μm; ave. Q = 4.9; basidia spore nature not recorded.
Cheilocystidia: main shape cylindrical; special features not recorded; Cheilocystidia Ratios: A/M = 0.95; A/B = 1.13; B/M = 0.92.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (7.7) 8.1–9.6 (9.9) 8.9 8.9 0.530
Width (µm) (4.7) 5.0–6.3 (6.4) 5.5 5.5 0.370
Q (1.40) 1.43–1.79 (1.89) 1.62 1.63 0.11

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length (13) 16–26 21 21 3.55
Apex Width 3.0–5.8 (6.4) 4.4 4.4 0.890
Median Width (3.4) 3.5–5.9 (6.8) 4.7 4.6 0.83
Basal Width (2.1) 3.0–5.9 4.2 4.2 0.86

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(7.7) 8.1–9.6 (9.9)	8.9	8.9	0.530
Width (µm)	(4.7) 5.0–6.3 (6.4)	5.5	5.5	0.370
Q	(1.40) 1.43–1.79 (1.89)	1.62	1.63	0.11

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	(13) 16–26	21	21	3.55
Apex Width	3.0–5.8 (6.4)	4.4	4.4	0.890
Median Width	(3.4) 3.5–5.9 (6.8)	4.7	4.6	0.83
Basal Width	(2.1) 3.0–5.9	4.2	4.2	0.86

Temperature calculation
Max temp Min temp Precipitation
Annualised average (1956) --- °C --- °C --- mm
Collection month (12/1956) --- °C --- °C --- mm
Max month (1956) --- °C --- °C --- mm

	Max temp	Min temp	Precipitation
Annualised average (1956)	--- °C	--- °C	--- mm
Collection month (12/1956)	--- °C	--- °C	--- mm
Max month (1956)	--- °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	49.0	73.44	14^th/16
Average length	8.9	8.87	6^th–9^th/16
Average width	5.5	5.49	5^th/16
Standard deviation of length	0.53	0.59	12^th–13^th/16
Standard deviation of width	0.37	0.35	5^th–8^th/16
Median length	8.9	8.94	8^th–10^th/16
Median width	5.5	5.53	5^th–8^th/16
Minimum length	7.7	7.38	2^nd–3^rd/16
Minimum width	4.7	4.49	4^th/16
Low length	8.1	7.82	3^rd–4^th/16
Low width	5.0	4.89	4^th–5^th/16
High length	9.6	9.71	11^th–13^th/16
High width	6.3	6.04	2^nd–5^th/16
Max length	9.9	10.09	12^th–13^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