taxonID	type	description	language	source
1984DD6641C7522580E508BC5BA01C9C.taxon	description	Fig. 2	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
1984DD6641C7522580E508BC5BA01C9C.taxon	diagnosis	Diagnosis. Epigeous brown to burnt umber basidiomata with long stipe, rubbery pale brown peridium, hyaline to yellow brown hyphae in exoperidium, hyaline hyphae in endoperidium, globose dark brown basidiospores with echinulate or spinose ornamentation.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
1984DD6641C7522580E508BC5BA01C9C.taxon	etymology	Etymology. The species name (longistipes) refers to the long stipe of the basidiomata.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
1984DD6641C7522580E508BC5BA01C9C.taxon	description	Description. Basidiomata epigeous, 28 – 35 mm in diam., 42 – 60 mm high, club-shaped, with globular peridial head; with cracked to squamulose surface, brown (6 E 5) background when young, with fawn (7 E 4) to brown (6 E 5) or burnt umber (6 F 6) squamular cracks upon luteous background, hard skin, tough when mature. Stipe sub-cylindric, fat, with small irregular cracks at the top of the strip, 35 – 45 × 10 – 13 mm, white background, covered with brown (6 E 5) fibrillose squamules. Rhizomorphs more aggregated at the base, white, branched, and narrowing towards the base. Context white in peridium and stipe, turned dull red to greyish red (98 B 4 - 5) when cut. Peridium up to 5 mm wide when fresh, rubbery in consistence, pale brown (6 D 5). Peridium layer formed by simple-septate hyphae. Exoperdium slightly thickened walls, composed of interwoven to ramified and superimposed hyphae, hyaline to yellow brown, 2.9 – 3.8 µm diam. Endoperdium thick, composed of interwoven hyphae, hyaline, 4.3 – 7.2 µm diam. Clamp connections present on endoperidium hyphae. Gleba brownish grey (9 E 2), greyish brown (9 E 3), or oxblood red (9 E 7) to dark brown (9 F 4 - 7), compact, and powdery when mature. Basidiospores (n = 50) globose, echinulate, dark brown in KOH, (13.4 –) 14.5 – 17.2 (19.5) µm in diam., with brown spinose ornamentation (2.6 – 5.9 µm high). Basidia not seen.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
037560B7F42956FCB22A359D821FC5BC.taxon	description	Fig. 4	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
037560B7F42956FCB22A359D821FC5BC.taxon	diagnosis	Diagnosis. Epigeous basidiomata with irregular club shape, smooth to slightly cracked to squamulose peridial head, brown to burnt umber, sessile or short pseudostipitate stipe, white, pale brown context, with hyphae simple-septate in both endoperidium and exoperidium, dark brown globose to subglobose basidiospores with crowded spines.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
037560B7F42956FCB22A359D821FC5BC.taxon	etymology	Etymology. The species name “ magnisporum ” refers to its larger basidiospores.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
037560B7F42956FCB22A359D821FC5BC.taxon	description	Description. Basidiomata epigeous, 35 mm in height, 22 – 34 mm in diam., club-shaped, with an irregularly globular peridial head; surface smooth, slightly cracked to squamulose, brown (6 E 5) to burnt umber (6 F 6), on pale orange (5 A 3) background. Sessile or short pseudostipitate (10 mm high), brown (6 E 5). Context thick, up to 5 mm wide. Exoperidium composed of hyphae simple-septate, interwoven, hyaline to yellow, 4.1 – 5.8 µm in diam. Endoperidium layer formed by hyphae simple-septate, with slightly thickened walls, interwoven, hyaline, 5.8 – 9.6 µm in diam., and hyphae from the endoperidium toward the gleba are pale yellow (4 A 3) and black in the mature gleba. Clamp connections present on endoperidium hyphae. Basidiospores (n = 50) globose to subglobose, echinulate with crowded curved spines, dark brown in KOH, (7.67 –) 12.42 – 8.42 (– 13.46) × (10.33 –) 14.53 – 11.42 (– 15.50) µm including ornamentation. Basidia not seen.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
037560B7F42956FCB22A359D821FC5BC.taxon	distribution	Known distribution. Northern Thailand.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
15A8243129F25AF5880DC8A2795B5243.taxon	description	Fig. 3	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
15A8243129F25AF5880DC8A2795B5243.taxon	diagnosis	Diagnosis. Different from the similar species S. dictyosporum in having smaller basidiomata and larger basidiospores.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
15A8243129F25AF5880DC8A2795B5243.taxon	etymology	Etymology. The species name “ microcarpum ” refers to the small size of the basidiomata.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
15A8243129F25AF5880DC8A2795B5243.taxon	description	Description. Basidiomata epigeous, 20 – 21 mm in diam. 10 – 20 mm in height, circular when young, depressed at maturity; surface smooth and with small scales when young stage, light yellow (5 A 4 - 5), covered with brown (7 E 6 - 8) squamules when mature. Stipe sessile or short pseudostipitate (less than 4 mm long). Rhizomorphs at the base, white, branched, narrowing towards the base. Context up to 2 mm thick, light yellow (5 A 4 - 5). Peridium layer formed by simple hyphae septate, hyaline to yellow brown. Exoperdium 6.9 – 9.3 µm in diam., with clamp connections. Endoperidium 4.2 – 8.2 µm in diam., with or without clamp connections. Gleba white – yellowish white (3 A 1 - 2), compact, and powdery when mature. Basidiospores (n = 50) globose to subglobose, echinulate, grayish brown in KOH, (3.97 –) 6.07 – 6.51 (– 8.15) × (8.24 –) 10.77 – 11.61 (– 13.33) µm in diam. Basidia not observed.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
15A8243129F25AF5880DC8A2795B5243.taxon	distribution	Known distribution. Northern Thailand.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
6C8A789B83085BB399A016E65B394F50.taxon	description	Fig. 5	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
6C8A789B83085BB399A016E65B394F50.taxon	description	Description. Basidiomata are epigeous, 12 – 28 mm in diam., 17 – 45 mm in height, globose, subglobose to irregularly oblate, tan (3 D 3) to ochraceous – brown (5 E 2). Peridium is leathery, thin, 0.5 – 1.0 mm thick when fresh, and becomes much thinner when dry, hay (5 C 4) to greenish-yellow (3 B 4) background. Peridium layer formed by hyphae simple-septate, with slightly thickened walls, interwoven, hyaline, exoperidium 2.4 – 4.4 µm in diam., and endoperidium 4.1 – 6.0 µm in diam. with clamp connections. Gleba grey (8 F 1) – dark brown (8 F 5), compact, and powdery when mature. Stipe is subcylindric, 20 – 50 mm in length and 5 – 10 mm in diam., with numerous white rhizomorphs at the base. Basidiospores globose, occasionally subglobose, dark brown in KOH, (12.31 –) 13.23 – 14.35 (– 16.49) × (11.53 –) 13.78 – 14.29 (– 16.30) µm in diam., including ornamentation (spinose up to 1.7 – 3.9 µm high), n = 50, coated by crowded curved spines. Basidia not seen.	en	Gonkhom, Didsanutda, Sysouphanthong, Phongeun, Stadler, Marc, Thongklang, Naritsada, Hyde, Kevin D. (2025): Three new species and one new record of Scleroderma (Sclerodermataceae, Boletales) from northern Thailand. MycoKeys 123: 69-88, DOI: 10.3897/mycokeys.123.160438
