taxonID	type	description	language	source
C54009176B24611737B7FF77C608FEBD.taxon	description	MycoBank no.: MB 859393	en	Deepna Latha, K. P., Varsha, M. K., Abhimanyu, C., Ajmal, M. (2025): Cuphophyllus aureus-a new species from Kerala State, India. Phytotaxa 721 (3): 265-276, DOI: 10.11646/phytotaxa.721.3.6, URL: https://doi.org/10.11646/phytotaxa.721.3.6
C54009176B24611737B7FF77C608FEBD.taxon	diagnosis	Diagnosis: — Characterized by small, omphalinoid basidiocarps with a golden yellow, glabrous, centrally depressed pileus, a compressed, fibrillose and striate stipe with a pale yellow strigose base, ellipsoid-oblong to lacrymoid basidiospores, a lamellar trama with an almost regular central strand flanked on either side by somewhat subregular hyphae, and a hymenium devoid of pleuro- and cheilocystidia. Differs from C. dingjieensis in having smaller basidiocarps with a centrally depressed, glabrous pileus, transvenose, intervenose, and occasionally furcate lamellae, a tapered, light orange to pale-yellow stipe, absence of cheilocystidia, and distinct nrITS, nrLSU, and rpb 2 sequences.	en	Deepna Latha, K. P., Varsha, M. K., Abhimanyu, C., Ajmal, M. (2025): Cuphophyllus aureus-a new species from Kerala State, India. Phytotaxa 721 (3): 265-276, DOI: 10.11646/phytotaxa.721.3.6, URL: https://doi.org/10.11646/phytotaxa.721.3.6
C54009176B24611737B7FF77C608FEBD.taxon	materials_examined	Type: — INDIA. Kerala State: Malappuram District, Calicut University Campus, 11 ° 07 ’ 41.7 ” N 75 ° 53 ’ 31.1 ” E, 55 m, 12 July 2018, on soil, K. G. Greeshma Ganga DKP 518 (holotype CALI!).	en	Deepna Latha, K. P., Varsha, M. K., Abhimanyu, C., Ajmal, M. (2025): Cuphophyllus aureus-a new species from Kerala State, India. Phytotaxa 721 (3): 265-276, DOI: 10.11646/phytotaxa.721.3.6, URL: https://doi.org/10.11646/phytotaxa.721.3.6
C54009176B24611737B7FF77C608FEBD.taxon	etymology	Etymology: — aureus (Latin), golden; refers to the color of the pileus.	en	Deepna Latha, K. P., Varsha, M. K., Abhimanyu, C., Ajmal, M. (2025): Cuphophyllus aureus-a new species from Kerala State, India. Phytotaxa 721 (3): 265-276, DOI: 10.11646/phytotaxa.721.3.6, URL: https://doi.org/10.11646/phytotaxa.721.3.6
C54009176B24611737B7FF77C608FEBD.taxon	description	Description: — Basidiocarp s small, omphalinoid. Pileus 2 – 10 mm diam., initially convex or convex with a small central depression, becoming broadly convex or plano-convex with a deep central depression at maturity; surface initially yellowish orange or dark orange (4 A 7, 5 A 8 / OAC 852, OAC 789), becoming golden yellow (5 B 7 / OAC 790) all over at maturity, glabrous to the naked eye, somewhat rugulose under a lens, hygrophanous and becoming paler; margin incurved when young, becoming decurved or somewhat straight with age, entire or slightly wavy at maturity. Lamellae decurrent or arcuate-decurrent, close, seldom furcate towards the margin, transvenose and intervenose, initially grayish orange (5 B 6 / OAC 810), becoming pale yellow (4 A 3 / OAC 814) at maturity, up to 5 mm wide, with lamellulae in 2 - 4 tiers; edge entire, concolorous with the sides. Stipe 4 – 17 × 1 – 3 mm, central, compressed, mostly tapering towards the apex or at times equal, cartilaginous, stuffed when young, becoming hollow with age; surface initially light orange (5 A 5 / OAC 791) all over, becoming pale or light yellow (4 A 3, 4 A 4 / OAC 813) at maturity; appressed-fibrillose as well as longitudinally-striate all over or at times longitudinally twisted-striate towards the apex; base slightly enlarged with a pale yellow, strigose basal mycelium. Context soft, up to 1 mm wide, orange white (5 A 2 / OAC 815). Odor and taste not distinctive. Spore print brownish gray (5 C 2 / OAC 828). Basidiospores 6 – 7 (9) × 3 – 4 µm (6.55 ± 0.53 × 3.94 ± 0.45 µm), Q = 1.34 – 2.3, Qm = 1.77, ellipsoid-oblong to lacrymoid, thin-walled, hyaline, non-metachromatic, inamyloid. Basidia 25 – 44 × 5 – 7 µm, elongate, clavate or narrowly clavate, thin-walled, hyaline with or without vacuolar contents, 4 - spored; sterigmata up to 4 µm long. Basidioles 17 – 41 × 2 – 7 µm, copious, narrowly clavate, clavate, cylindrical or flexuous-cylindric, a few with a capitate apex, thin-walled, hyaline with or without vacuolar contents. Lamella-edge fertile. Pleuro- and cheilocystidia absent. Lamellar trama with an almost regular central strand flanked on either side by somewhat subregular hyphae; hyphae 5 – 53 (66) × 1 – 5 µm wide, narrowly cylindrical or cylindrical, thin-walled, hyaline or with a pale-yellow wall pigment, inamyloid. Subhymenium pseudoparenchymatous. Pileus trama subregular; hyphae 3 – 7 µm wide, thin-walled, hyaline or with a pale-yellow plasmatic pigment, inamyloid. Pileipellis a repent cutis; hyphae 2 – 5 × 11 – 37 µm wide, thin-walled, hyaline, inamyloid. Pileocystidia absent. Stipitipellis a cutis; hyphae 2 – 5 µm wide, thin-walled, hyaline or with a pale-yellow wall pigment, inamyloid. Caulocystidia absent. Stipe trama subregular with both narrow and inflated hyphae; hyphae 2 – 15 (17) µm wide, thin-walled, with a pale-yellow wall pigment, inamyloid. Clamp connections observed on all tissues.	en	Deepna Latha, K. P., Varsha, M. K., Abhimanyu, C., Ajmal, M. (2025): Cuphophyllus aureus-a new species from Kerala State, India. Phytotaxa 721 (3): 265-276, DOI: 10.11646/phytotaxa.721.3.6, URL: https://doi.org/10.11646/phytotaxa.721.3.6
C54009176B24611737B7FF77C608FEBD.taxon	biology_ecology	Habitat: — On soil, scattered or in small groups. Geographical distribution range: — Known only from the type locality in Kerala State, India.	en	Deepna Latha, K. P., Varsha, M. K., Abhimanyu, C., Ajmal, M. (2025): Cuphophyllus aureus-a new species from Kerala State, India. Phytotaxa 721 (3): 265-276, DOI: 10.11646/phytotaxa.721.3.6, URL: https://doi.org/10.11646/phytotaxa.721.3.6
C54009176B24611737B7FF77C608FEBD.taxon	materials_examined	Additional specimens examined: — INDIA. Kerala State: Malappuram District, Calicut University Campus, 11 ° 07 ’ 41.7 ” N 75 ° 53 ’ 31.1 ” E, 55 m, 17 July 2018, on soil, K. P. Deepna Latha DKP 522; 11 ° 08 ’ 41.1 ” N 75 ° 53 ’ 14.9 ” E, 72 m, 24 July 2024, on soil, M. K. Varsha MK 28; 11 ° 08 ’ 41.1 ” N 75 ° 53 ’ 14.9 ” E, 72 m, 02 November 2024, on soil, M. K. Varsha MK 34; 11 ° 08 ’ 41.1 ” N 75 ° 53 ’ 14.9 ” E, 72 m, 13 December 2024, on soil, M. K. Varsha MK 36.	en	Deepna Latha, K. P., Varsha, M. K., Abhimanyu, C., Ajmal, M. (2025): Cuphophyllus aureus-a new species from Kerala State, India. Phytotaxa 721 (3): 265-276, DOI: 10.11646/phytotaxa.721.3.6, URL: https://doi.org/10.11646/phytotaxa.721.3.6
