Hebeloma.org: Collection HJB18661

Taxonomy

Collection 18661 (herbarium acc. no. CMMF003712) is Hebeloma excedens.

Description

Collecting details

Collection 18661 was collected by Y. Lamoureux on 16th May 2003 in Laval, Quebec, CANADA (approx. 45.6096°N, 73.7059°W, altitude approximately 35 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as not recorded.
According to the GPS data the collection was in the Eastern Great Lakes lowland 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: 14–27 mm diameter; shape umbonate; margin characters involute, smooth; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation unicolor; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil yes.
Lamellae: attachment emarginate; maximum depth not recorded; number of complete lamellae 40; tears absent; white fimbriate edge not recorded.
Stipe: 35–43 x 4 {median} x 4 {basal} mm; stipe Q 8.8–10.8; base cylindrical; floccosity fibrillose, pruinose at apex; rooting no; mycelial chords no.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base weak; slenderness measure 21.6; smell not recorded; taste not recorded.
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: 25.7–26.3 x 7.1–7.4 μm; ave. Q = 3.6; basidia spore nature not recorded.
Cheilocystidia: main shape lageniform, ventricose; special features many collapsed in exsiccata; Cheilocystidia Ratios: A/M = 1.09; A/B = 0.71; B/M = 1.53.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (7.6) 8.1–10.0 (10.1) 9.1 9.2 0.610
Width (µm) (4.6) 4.9–6.2 (6.5) 5.5 5.3 0.430
Q (1.40) 1.43–1.86 (1.94) 1.68 1.71 0.13

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length (34) 35–47 40 38 5.31
Apex Width (4.2) 4.3–6.2 (6.4) 5.2 5.4 0.790
Median Width (3.2) 3.4–6.1 (6.3) 4.9 5.2 1.08
Basal Width 6.2–8.5 (8.7) 7.3 7.6 0.96

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(7.6) 8.1–10.0 (10.1)	9.1	9.2	0.610
Width (µm)	(4.6) 4.9–6.2 (6.5)	5.5	5.3	0.430
Q	(1.40) 1.43–1.86 (1.94)	1.68	1.71	0.13

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	(34) 35–47	40	38	5.31
Apex Width	(4.2) 4.3–6.2 (6.4)	5.2	5.4	0.790
Median Width	(3.2) 3.4–6.1 (6.3)	4.9	5.2	1.08
Basal Width	6.2–8.5 (8.7)	7.3	7.6	0.96

Temperature calculation
Max temp Min temp Precipitation
Annualised average (2003) 11.34 °C 0.89 °C 97.54 mm
Collection month (5/2003) 18.72 °C 7.02 °C 120.79 mm
Max month (2003) 26.98 °C 16.26 °C 164.91 mm

	Max temp	Min temp	Precipitation
Annualised average (2003)	11.34 °C	0.89 °C	97.54 mm
Collection month (5/2003)	18.72 °C	7.02 °C	120.79 mm
Max month (2003)	26.98 °C	16.26 °C	164.91 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	68.23	39^th–41^st/52
Average length	9.1	9.33	33^rd–36^th/52
Average width	5.5	5.68	37^th–42^nd/52
Standard deviation of length	0.61	0.71	39^th–42^nd/52
Standard deviation of width	0.43	0.36	6^th–7^th/52
Median length	9.2	9.35	28^th–34^th/52
Median width	5.3	5.69	45^th–48^th/52
Minimum length	7.6	7.67	26^th–30^th/52
Minimum width	4.6	4.81	32^nd–35^th/52
Low length	8.1	8.15	27^th–30^th/52
Low width	4.9	5.16	34^th–45^th/52
High length	10.0	10.41	42^nd–46^th/52
High width	6.2	6.25	30^th–34^th/52
Max length	10.1	10.78	50^th/52
Max width	6.5	6.53	16^th–33^rd/52

Spore feature	Value	Commonalities
Ornamentation	O1	100% of collections
Perispore loosening	P0	100% of collections
Dextrinoidity	D0	94% of collections