Hebeloma.org: Collection HJB1000338

Taxonomy

Collection 1000338 (herbarium acc. no. DBG-F-002473) is Hebeloma alpinicola. It is the holotype of heterotypic synonym Hebeloma chapmaniae A.H. Sm., V.S. Evenson & Mitchel [as "chapmanae"] (1983).

Description

Collecting details

Collection 1000338 was collected by S. Chapman on 10th September 1969 in Park County, Pike National Forest, Sacramento, west of Fairplay, north side of old house, Colorado, UNITED STATES (approx. 39.2237°N, 106.1172°W, altitude approximately 3600 m above sea level - Google maps). No ectomycorrhizal plants were recorded.
The surrounding habitat was described as subalpine woodland with a substrate of mossy, rich 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. 1.1: Forest – Boreal.
According to the GPS data the collection was in the Colorado Rockies 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 ET (Polar, tundra).

Macroscopic description
Cortina present: yes.
Pileus: up to 30 mm diameter; shape convex, umbonate; margin characters not recorded; viscosity tacky when moist; spotting yes; hygrophanous no; colour variation unicolor; with colour at centre not recorded; and colour at margin clay-buff; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth not recorded; number of complete lamellae 48; tears absent; white fimbriate edge absent.
Stipe: 50 x 5 {median} x 5 {basal} mm; stipe Q 10.0; base cylindrical; floccosity fibrillose; rooting no; mycelial chords no.
Context: texture firm; stipe interior not recorded; stipe flesh discolouring from base yes; slenderness measure 16.7; smell raphanoid; taste bitter.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape cylindrical, ellipsoid; colour through microscope yellow brown; guttulate no; papillate no; Spore Code: O1; O2; P0; D0.
Basidia: 23.9–27.4 x 6.5–8.2 μm; ave. Q = 3.6; basidia spore nature not recorded.
Cheilocystidia: main shape lageniform, ventricose; special features septa; Cheilocystidia Ratios: A/M = 1.13; A/B = 0.67; B/M = 1.72.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (7.9) 8.4–10.8 (11.5) 9.5 9.5 0.780
Width (µm) (4.5) 4.8–5.9 (6.3) 5.4 5.4 0.340
Q (1.53) 1.57–1.98 (2.14) 1.78 1.78 0.13

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length (23) 26–40 33 34 4.86
Apex Width (3.8) 4.3–5.8 5.1 5.3 0.530
Median Width (3.8) 3.9–5.6 (5.7) 4.6 4.7 0.5
Basal Width (5.3) 6.0–10.9 7.9 7.6 1.62

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(7.9) 8.4–10.8 (11.5)	9.5	9.5	0.780
Width (µm)	(4.5) 4.8–5.9 (6.3)	5.4	5.4	0.340
Q	(1.53) 1.57–1.98 (2.14)	1.78	1.78	0.13

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	(23) 26–40	33	34	4.86
Apex Width	(3.8) 4.3–5.8	5.1	5.3	0.530
Median Width	(3.8) 3.9–5.6 (5.7)	4.6	4.7	0.5
Basal Width	(5.3) 6.0–10.9	7.9	7.6	1.62

Temperature calculation
Max temp Min temp Precipitation
Annualised average (1969) 6.92 °C -6.42 °C 51.10 mm
Collection month (9/1969) 14.48 °C 0.94 °C 34.69 mm
Max month (1969) 18.81 °C 4.85 °C 96.09 mm

	Max temp	Min temp	Precipitation
Annualised average (1969)	6.92 °C	-6.42 °C	51.10 mm
Collection month (9/1969)	14.48 °C	0.94 °C	34.69 mm
Max month (1969)	18.81 °C	4.85 °C	96.09 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	64.0	53.89	14^th/53
Average length	9.5	9.58	24^th–32^nd/54
Average width	5.4	5.72	48^th–49^th/54
Standard deviation of length	0.78	0.66	11^th–13^th/50
Standard deviation of width	0.34	0.34	25^th–30^th/50
Median length	9.5	9.62	25^th–29^th/50
Median width	5.4	5.75	47^th–49^th/50
Minimum length	7.9	8.14	31^st–34^th/51
Minimum width	4.5	5.04	49^th–50^th/51
Low length	8.4	8.57	31^st–35^th/51
Low width	4.8	5.25	49^th–50^th/51
High length	10.8	10.64	14^th–20^th/51
High width	5.9	6.29	45^th–47^th/51
Max length	11.5	11.00	10^th/51
Max width	6.3	6.56	40^th–45^th/51

Spore feature	Value	Commonalities
Ornamentation	O1; O2	100% of collections; 5% of collections
Perispore loosening	P0	100% of collections
Dextrinoidity	D0	98% of collections