Hebeloma.org: Collection HJB16738

Taxonomy

Collection 16738 (herbarium acc. no. TLXM HJB16738) is Hebeloma velutipes.

Description

Collecting details

Collection 16738 was collected by A. Kong, A. Montoya-Esquivel, L. Davies, H.J. Beker on 2nd July 2017 in Parc Nacional La Malinche, Tlaxcala, MEXICO (19.2592°N, 98.0314°W, altitude approximately 3280 m above sea level - Google maps). The ectomycorrhizal families Pinaceae (genus Abies) and Salicaceae (genus Salix) were present.
The surrounding habitat was described as mixed, montane, subtropical woodland ditch with a substrate of mossy 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. 1.9: Forest – Subtropical/tropical moist montane.
According to the GPS data the collection was in the Trans-Mexican Volcanic Belt pine-oak 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: Tropical & Subtropical Coniferous Forests) and Koppen climate code Cwb (Temperate, dry winter, warm summer).

Macroscopic description
Cortina present: no.
Pileus: 24–33 mm diameter; shape convex; margin characters overhanging pileus; viscosity tacky when moist; spotting no; hygrophanous no; colour variation unicolor; with colour at centre pale cream, pale pinkish buff; and colour at margin not recorded; with remains of universal veil no.
Lamellae: attachment emarginate; maximum depth up to 4 mm; number of complete lamellae 61; tears visible with x10 lens; white fimbriate edge present.
Stipe: 33–55 x 5 {median} x 6–7 {basal} mm; stipe Q 6.6–11.0; base clavate; floccosity floccose, pruinose; rooting no; mycelial chords no.
Context: texture firm; stipe interior stuffed; stipe flesh discolouring from base no; slenderness measure 13.7; smell raphanoid strongly; taste not recorded.
Spore deposit colour: brownish olive, umber.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape amygdaloid, limoniform; colour through microscope yellow brown; guttulate yes; papillate yes; Spore Code: O2; P1; D2; D3.
Basidia: 26.4–30.8 x 7.9–8.0 μm; ave. Q = 3.7; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate; special features bifurcate, plaques, septa; Cheilocystidia Ratios: A/M = 1.43; A/B = 1.58; B/M = 0.91.
Pleurocystidia: no.
Ixocutis: analysis not yet complete.
Caulocystidia: analysis not yet complete.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (9.6) 9.9–12.5 (12.7) 11.3 11.4 0.750
Width (µm) (5.8) 6.2–7.1 (7.5) 6.6 6.5 0.290
Q (1.43) 1.51–1.87 (1.97) 1.72 1.72 0.11

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length (57) 59–79 (85) 68 68 7.3
Apex Width (5.9) 6.0–8.3 (9.3) 7.1 7.0 0.800
Median Width 4.0–6.1 (6.5) 5.0 4.9 0.66
Basal Width 3.4–5.7 4.6 4.5 0.63

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(9.6) 9.9–12.5 (12.7)	11.3	11.4	0.750
Width (µm)	(5.8) 6.2–7.1 (7.5)	6.6	6.5	0.290
Q	(1.43) 1.51–1.87 (1.97)	1.72	1.72	0.11

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	(57) 59–79 (85)	68	68	7.3
Apex Width	(5.9) 6.0–8.3 (9.3)	7.1	7.0	0.800
Median Width	4.0–6.1 (6.5)	5.0	4.9	0.66
Basal Width	3.4–5.7	4.6	4.5	0.63

Temperature calculation
Max temp Min temp Precipitation
Annualised average (2017) 18.67 °C 2.81 °C 106.19 mm
Collection month (7/2017) 18.30 °C 4.58 °C 179.44 mm
Max month (2017) 20.69 °C 5.05 °C 296.66 mm

	Max temp	Min temp	Precipitation
Annualised average (2017)	18.67 °C	2.81 °C	106.19 mm
Collection month (7/2017)	18.30 °C	4.58 °C	179.44 mm
Max month (2017)	20.69 °C	5.05 °C	296.66 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	79.0	52.33	21^st–23^rd/149
Average length	11.3	11.12	55^th–65^th/149
Average width	6.6	6.55	61^st–83^rd/149
Standard deviation of length	0.75	0.70	41^st–43^rd/132
Standard deviation of width	0.29	0.33	79^th–84^th/132
Median length	11.4	11.06	36^th–41^st/132
Median width	6.5	6.55	75^th–79^th/132
Minimum length	9.6	9.61	60^th–71^st/132
Minimum width	5.8	5.85	70^th–84^th/132
Low length	9.9	10.04	80^th–88^th/132
Low width	6.2	6.07	47^th–59^th/132
High length	12.5	12.10	36^th–43^rd/132
High width	7.1	7.03	48^th–61^st/132
Max length	12.7	12.59	51^st–58^th/132
Max width	7.5	7.31	37^th–41^st/132

Spore feature	Value	Commonalities
Ornamentation	O2	90% of collections
Perispore loosening	P1	56% of collections
Dextrinoidity	D2; D3	29% of collections; 92% of collections