Hebeloma.org: Collection HJB1000430

Taxonomy

Collection 1000430 (herbarium acc. no. MICH 10774) is Hebeloma mesophaeum. It is the holotype of heterotypic synonym Hebeloma mesophaeum var. longipes A.H. Sm., V.S. Evenson & Mitchel (1983).

Description

Collecting details

Collection 1000430 was collected by A.H. Smith (64681) on 14th October 1961 in Washtenaw County, Stinchfield Woods, NW of Dexter , Michigan, UNITED STATES (approx. 42.4028°N, 83.9247°W, altitude approximately 320 m above sea level - Google maps). The ectomycorrhizal family Pinaceae (genus Pinus) was present.
The surrounding habitat was described as not recorded.
According to the GPS data the collection was in the Southern Great Lakes 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 Dfa (Cold, no dry season, hot summer).

Macroscopic description
Cortina present: yes.
Pileus: 20–60 mm diameter; shape umbonate broadly; margin characters fibrillose; viscosity tacky when moist; spotting no; hygrophanous no; colour variation two-colour; with colour at centre clay-buff; and colour at margin pinkish buff; with remains of universal veil yes.
Lamellae: attachment adnate, adnexed; maximum depth not recorded; number of complete lamellae 48; tears absent; white fimbriate edge weak.
Stipe: 50–110 x 5–10 {median} x 5–10 {basal} mm; stipe Q 10.0–11.0; base cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base yes; slenderness measure 22.6; smell raphanoid; taste raphanoid.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape ellipsoid, ovoid; colour through microscope not recorded; guttulate not recorded; papillate no; Spore Code: O1; P0; D0.
Basidia: 22.5–25.6 x 5.6–7.4 μm; ave. Q = 3.7; basidia spore nature not recorded.
Cheilocystidia: main shape lageniform, ventricose; special features basal thickening, many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 1.12; A/B = 0.68; B/M = 1.70.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (7.2) 7.5–9.8 (10.3) 8.7 8.8 0.710
Width (µm) (4.4) 4.6–5.9 (6.3) 5.3 5.3 0.390
Q (1.41) 1.44–1.85 (2.07) 1.66 1.67 0.12

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length 24–48 (59) 34 34 8.38
Apex Width (2.8) 3.0–6.0 (6.1) 4.6 4.7 0.870
Median Width (2.8) 3.1–5.3 (5.8) 4.2 4.1 0.71
Basal Width (4.6) 4.9–8.6 6.9 7.0 1.09

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(7.2) 7.5–9.8 (10.3)	8.7	8.8	0.710
Width (µm)	(4.4) 4.6–5.9 (6.3)	5.3	5.3	0.390
Q	(1.41) 1.44–1.85 (2.07)	1.66	1.67	0.12

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	24–48 (59)	34	34	8.38
Apex Width	(2.8) 3.0–6.0 (6.1)	4.6	4.7	0.870
Median Width	(2.8) 3.1–5.3 (5.8)	4.2	4.1	0.71
Basal Width	(4.6) 4.9–8.6	6.9	7.0	1.09

Temperature calculation
Max temp Min temp Precipitation
Annualised average (1961) 13.98 °C 3.55 °C 67.40 mm
Collection month (10/1961) 17.37 °C 6.17 °C 36.82 mm
Max month (1961) 27.43 °C 15.82 °C 135.67 mm

	Max temp	Min temp	Precipitation
Annualised average (1961)	13.98 °C	3.55 °C	67.40 mm
Collection month (10/1961)	17.37 °C	6.17 °C	36.82 mm
Max month (1961)	27.43 °C	15.82 °C	135.67 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	112.0	65.23	13^th/115
Average length	8.7	9.24	92^nd–99^th/118
Average width	5.3	5.58	92^nd–97^th/118
Standard deviation of length	0.71	0.61	23^rd–28^th/110
Standard deviation of width	0.39	0.32	15^th–18^th/110
Median length	8.8	9.25	78^th–84^th/110
Median width	5.3	5.60	89^th–94^th/110
Minimum length	7.2	7.89	97^th–99^th/112
Minimum width	4.4	4.89	97^th–104^th/112
Low length	7.5	8.33	104^th–105^th/112
Low width	4.6	5.13	102^nd–106^th/112
High length	9.8	10.20	81^st–86^th/112
High width	5.9	6.11	80^th–87^th/112
Max length	10.3	10.67	80^th–84^th/112
Max width	6.3	6.38	66^th–73^rd/112

Spore feature	Value	Commonalities
Ornamentation	O1	99% of collections
Perispore loosening	P0	99% of collections
Dextrinoidity	D0	87% of collections