Fungalpedia – Note 2896, Nigromacula
Nigromacula Etayo.
Citation when using this data: Meng QF et al. – Fungalpedia.
Index Fungorum, Faceoffungi, MycoBank, GenBank, Fig 1.
Classification: Ascomycota genera incertae sedis, Fungi.
Nigromacula was introduced by Etayo (2002b) to describe the type species N. hypotrachynae, which grows on the foliose lichen Hypotrachyna. The genus is characterized by black, superficial, plano-convex sporodochia, with monoblastic, integrated, terminal, ellipsoidal conidiogenous cells. The conidia are acrogenic, ellipsoidal to subcylindrical, ornamented, striate, and uniseptate (Etayo 2002b). Hawksworth (2003) transferred N. uniseptata from Vouauxiella uniseptata D. Hawksw., a species found on Parmelia laevigata. The genus includes two recognized lichenicolous species. Due to the lack of molecular data, Nigromacula is tentatively placed within Ascomycota genera incertae sedis (Hyde et al. 2024).
Type species: Nigromacula hypotrachynae Etayo.
Other accepted species: Species Fungorum – search Nigromacula.
Figure 1 – Nigromacula hypotrachynae redrawn from Etayo (2002b). a Cross-section of a sporodochium. b Conidiophores and conidial cells. c Conidia. d Part of a conidium. Scale bars: a = 100 μm, b, c = 10 μm, d = 5 μm.
References
Entry by
Meng QF, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand and School of Public Health, Zunyi Medical University, Guizhou 563000, China.
Published online 5 August 2026