taxonID	type	description	language	source
038B87A3FFEAFFFC6C9FF9B1FBEB3077.taxon	description	MycoBank: MB: 859598	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFEAFFFC6C9FF9B1FBEB3077.taxon	diagnosis	Diagnosis: — Bolbitius corrugatus differs from B. excoriatus by having a yellow, not brown, pileus; from B. titubans sensu lato, its smaller, more angular and hexagonal basidiospores; from B. coprophilus by its yellow turning to pale buff pileus and slightly smaller, more angular and hexagonal basidiospores; and from B. elegans by being non-gasteroid, having stouter basidiocarps and having hexagonal basidiospores.	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFEAFFFC6C9FF9B1FBEB3077.taxon	materials_examined	Holotype: — SCOTLAND. Midlothian, Edinburgh, growing on incubated highland cow dung collected on the north – west slopes of Caerketton Hill, 55.888, - 3.226, elev. 331 m, 27 February 2025, A. Drummond – Herdman (E 01528038). GenBank: PV 021289 (ITS); PV 021294 (LSU).	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFEAFFFC6C9FF9B1FBEB3077.taxon	etymology	Etymology: — The specific epithet ‘ corrugatus ’ refers to the species’ corrugated pileus.	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFEAFFFC6C9FF9B1FBEB3077.taxon	description	Time-lapse: — Available at https: // youtu. be / AvJDKkuPvG 8 Description: — Pileus 4 – 25 mm wide and 1 – 4.5 mm high when mature; campanulate when young, expanding to plano – convex, broadly umbonate; surface wrinkled and covered in a gelatinous layer when immature, developing to corrugated from the margin to start of the broad umbo, disk with protruding vein-like reticulum at maturity; margin crenate; predominantly lemon yellow, drying to pale – cream from the margin inwards, finally pale olive at the edge with the centre dark yellow; surface viscid with a glutinous top layer particularly in humidity, excoriate with drying. Lamellae free or narrowly adnexed, subdistant, thin, with one series of lamellulae extending to approximately 20 % to 50 % of the gill; whitish when young, maturing to orange, then light brown; edge white, crisped to finely serrate. Stipe 8.5 – 71 × 0.5 – 1.7 mm, equal, flocculose, with a bulbous base up to 3 mm wide, sometimes shortly tapering but not rooting; pale white, with a yellow – green tint which concentrates at the base, drying to pale buff. Odour and Taste not distinctive. Basidiospores [151, 4] (7.8) 9.0 – 10.5 (12.0) × (5) 6 – 7 (8) µm, mean: 9.9 × 6.4 µm, width in front view: 5 – 6.5 (6.6) um, Q = (1.25) 1.37 × 1.75 (1.83), Qav = 1.67; variable in shape, angular or subhexagonal, lentiform-oblong, often slightly irregular in side view, irregular in front-view, yellow-brown in KOH, thick-walled, with central or slightly eccentric germ pore 2.2 – 3.5 µm wide. Basidia 2 -, 3 - and 4 - spored, 19 – 25 × 9 – 12 µm, clavate. Pseudoparaphyses present, clavate. Cheilocystidia 20 – 39 × 9 – 21 µm, variable in shape: broadly fusiform, utriform, lageniform with a long or short neck, clavate, rarely sphaeropedunculate, hyaline, thin-walled, intermixed with basidia. Pleurocystidia absent. Pileipellis hymeniform, consisting of pyriform, subglobose, broadly clavate to sphaeropedunculate elements (15 – 35 × 11 – 23 µm), covered in a gelatinous layer (but this may not show on dried basidiocarps). Stipitipellis a cutis, consisting of cylindrical hyaline hyphae, with caulocystidia singularly, in small groups, or in dense clusters of up to ten. Caulocystidia variable in shape: oblong-reniform, utriform, broadly lageniform or narrowly lageniform with slightly incurved walls (1 – 3 incurves), 20 – 39 × 10 – 19 µm. Clamp connections not observed.	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFEAFFFC6C9FF9B1FBEB3077.taxon	distribution	Habitat and distribution: — Solitary or in small groups on old cow dung in upland grassland.	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFEAFFFC6C9FF9B1FBEB3077.taxon	materials_examined	Additional specimens examined: — SCOTLAND: Midlothian, Edinburgh, mixed acidic upland grassland, growing on incubated highland cow dung collected on the north – west slopes of Caerketton Hill, 55.888, - 3.226, elev. 331 m, 31 August 2024, A. Drummond – Herdman (K-M 001445334), GenBank: PV 021292 (ITS); ibid., growing on highland cow dung on the north – west slopes of Caerketton Hill, 55.888, - 3.226, elev. 331 m, 8 September 2024, A. DrummondHerdman (K-M 001445335), GenBank: PV 021291 (ITS); ibid., growing on incubated highland cow dung collected on the north-west slopes of Caerketton Hill, 55.888, - 3.226, elev. 331 m, 11 September 2024, A. Drummond – Herdman (K-M 001445336), GenBank: PV 021289 (ITS); PV 021294 (LSU); ibid., growing on incubated highland cow dung collected on the north-west slopes of Caerketton Hill, 55.888, - 3.226, elev. 331 m, 16 September 2024, A. DrummondHerdman (K-M 001445337). GenBank: PV 021290 (ITS); PV 021296 (LSU); HUNGARY: Hortobágy, on cow dung, 14 June 2007, László Nagy (NL- 1994), GenBank: JX 968252 (ITS); JX 968369 (LSU).	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFE0FFF26C9FFF6CFB5A344A.taxon	description	MycoBank MB: 519280 Pileus approximately 6 mm diam., oviform-parabolic when young, convex with maturity; viscid pellicle, drying with age; excoriate margin at all stages; brown with light tints in the centre and edge. Lamellae free, close, slightly ventricose; pale when young, speckled light brown with age; edge slightly crystalline in appearance; not deliquescing. Stipe approximately 10 mm long, white with a yellowish green tint, flocculose and pruinose. Odour and Taste: not observed. Basidiospores [30, 1] 8 – 9 (10) × 5 – 6 (6.5) µm, mean: 8.9 × 5.9 µm, Q = 1.33 × 1.71 (1.80), Qav = 1.53; variable in shape, angular to hexagonal, mitriform, lentiform-oblong; yellow-brown in KOH; thick-walled, with central or slightly eccentric germ pore. Basidia 2 - and 4 - spored, 21.4 – 28.3 × 8.9 – 10.0 µm, clavate or narrowly clavate, sometimes slightly irregular. Pseudoparaphyses present, clavate. Cheilocystidia 29 – 40 × 15 – 23 µm, variable in shape: broadly utriform, often asymmetrical; clavate; irregularly oblong. Pleurocystidia absent. Pileipellis hymeniform, consisting of clavate, subglobose, broadly clavate to sphaeropedunculate elements 16 – 25 × 6 – 11 µm, covered in a gelatinous layer (but this may not show on dried basidiocarps). Stipitipellis a cutis. Caulocystidia variable in shape: broadly lageniform, utriform, clavate, subcylindrical, 22 – 31 × 8 – 13 µm. Clamp connections not observed.	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
038B87A3FFE0FFF26C9FFF6CFB5A344A.taxon	materials_examined	Material examined: — SCOTLAND: Midlothian, Edinburgh, mixed acidic upland grassland, growing on incubated highland horse or cow dung collected on the north – west slopes of Caerketton Hill, 55.888, - 3.226, elev. 331 m, 18 October 2024, A. Drummond – Herdman (E 01528037). GenBank: PV 021293 (ITS); PV 021295 (LSU).	en	Drummond-Herdman, Alfred, Malysheva, Ekaterina, Jakob, Sigrid, Szafián, Dorottya Anna, Nagy, László G. (2025): A new species and a new record of Bolbitius (Bolbitiaceae, Agaricales) from Scotland and Britain, respectively. Phytotaxa 733 (2): 155-171, DOI: 10.11646/phytotaxa.733.2.1, URL: https://doi.org/10.11646/phytotaxa.733.2.1
