Hebeloma.org: Collection HJB1000343

Taxonomy

Collection 1000343 (herbarium acc. no. BRI AQ669300) is the holotype of Hebeloma youngii.

Description

Collecting details

Collection 1000343 was collected by P.I. Forster, R. Booth, A.M. Young (PIF26822), det: B.J. Rees on 19th February 2001 in Near Moomin, Atherton to Herberton Road, Queensland, AUSTRALIA (approx. 17.3642°S, 145.3967°E, altitude approximately 920 m above sea level - Google maps). The ectomycorrhizal family Myrtaceae (genus Eucalyptus) was present.
The surrounding habitat was described as subtropical woodland with a substrate of cadaveric 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. 1.5: Forest – Subtropical/tropical dry.
According to the GPS data the collection was in the Queensland tropical rain 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 Moist Broadleaf Forests) and Koppen climate code Cwa (Temperate, dry winter, hot summer).

Macroscopic description
Cortina present: yes.
Pileus: 20–45 mm diameter; shape umbonate; margin characters not recorded; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation two-colour; with colour at centre not recorded; and colour at margin not recorded; with remains of universal veil not recorded.
Lamellae: attachment adnate; maximum depth not recorded; number of complete lamellae 56; tears not recorded; white fimbriate edge absent.
Stipe: 30–60 x 3–6 {median} x 4–6 {basal} mm; stipe Q 10.0; base not recorded; floccosity fibrillose, velute; rooting not recorded; mycelial chords not recorded.
Context: texture firm; stipe interior hollow; stipe flesh discolouring from base not recorded; slenderness measure 14.2; smell not recorded; taste not recorded.
Spore deposit colour: analysis not yet complete.
Exsiccata: analysis not yet complete.

Microscopic description
Spores: shape amygdaloid; colour through microscope brown; guttulate weak; papillate no; Spore Code: O2; O3; P2; P3; D3.
Basidia: 24.9–28.3 x 6.9–7.8 μm; ave. Q = 3.7; basidia spore nature not recorded.
Cheilocystidia: main shape lageniform, lanceolate, ventricose; special features rostrate; Cheilocystidia Ratios: A/M = 0.81; A/B = 0.36; B/M = 2.31.
Pleurocystidia: yes.
Ixocutis: analysis not yet complete.
Caulocystidia: caulocystidia maximum length 35 μm.

Spore (min) 5%-95% (max) mean median S.D.
Length (µm) (9.2) 10.1–11.2 (11.6) 10.6 10.6 0.420
Width (µm) (5.8) 6.0–6.9 (7.0) 6.5 6.6 0.270
Q (1.51) 1.53–1.80 (1.85) 1.63 1.61 0.08

Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D.
Length 32–44 (46) 37 38 5.31
Apex Width 2.6–3.3 (3.4) 2.9 2.9 0.260
Median Width (2.8) 2.9–4.4 (4.6) 3.7 3.8 0.62
Basal Width (7.1) 7.2–9.1 8.2 8.3 0.83

Spore	(min) 5%-95% (max)	mean	median	S.D.
Length (µm)	(9.2) 10.1–11.2 (11.6)	10.6	10.6	0.420
Width (µm)	(5.8) 6.0–6.9 (7.0)	6.5	6.6	0.270
Q	(1.51) 1.53–1.80 (1.85)	1.63	1.61	0.08

Cheilocystidium (µm)	(min) 5%-95% (max)	mean	median	S.D.
Length	32–44 (46)	37	38	5.31
Apex Width	2.6–3.3 (3.4)	2.9	2.9	0.260
Median Width	(2.8) 2.9–4.4 (4.6)	3.7	3.8	0.62
Basal Width	(7.1) 7.2–9.1	8.2	8.3	0.83

Temperature calculation
Max temp Min temp Precipitation
Annualised average (2001) 25.32 °C 14.23 °C 100.22 mm
Collection month (2/2001) 25.63 °C 17.99 °C 502.52 mm
Max month (2001) 29.70 °C 18.18 °C 502.52 mm

	Max temp	Min temp	Precipitation
Annualised average (2001)	25.32 °C	14.23 °C	100.22 mm
Collection month (2/2001)	25.63 °C	17.99 °C	502.52 mm
Max month (2001)	29.70 °C	18.18 °C	502.52 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	54.0	100.00	2^nd/2
Average length	10.6	10.40	1^st/2
Average width	6.5	6.40	1^st/2
Standard deviation of length	0.42	0.57	2^nd/2
Standard deviation of width	0.27	0.28	2^nd/2
Median length	10.6	10.40	1^st/2
Median width	6.6	6.45	1^st/2
Minimum length	9.2	8.90	1^st/2
Minimum width	5.8	5.65	1^st/2
Low length	10.1	9.60	1^st/2
Low width	6.0	5.90	1^st/2
High length	11.2	11.25	2^nd/2
High width	6.9	6.80	1^st/2
Max length	11.6	12.05	2^nd/2
Max width	7.0	6.95	1^st/2

Spore feature	Value	Commonalities
Ornamentation	O2; O3	100% of collections; 100% of collections
Perispore loosening	P2; P3	100% of collections; 50% of collections
Dextrinoidity	D3	100% of collections