Fungalpedia – Note 2603, Hemigraphaceae
Hemigraphaceae D.Q. Dai & K.D. Hyde
Citation when using this data: Meng QF et al. – Fungalpedia.
Index Fungorum, Facesoffungi , MycoBank, GenBank.
Classification: Asterinales, Dothideomycetes orders incertae sedis, Ascomycota, Fungi
Hemigraphaceae was introduced by Dai et al. (2018) to accommodate Hemigrapha which is typified by H. asteriscus (Müll. Arg.) R. Sant. Ex D. Hawksw. In the phylogenetic trees by Ertz et al. (2015) and Dai et al. (2018), H. asteriscus forms a distinct lineage within Asterinales. In addition, after studying the type of H. asteriscus, Dai et al. (2018) found that it is different from the type of Parmulariaceae. Consequently, Hemigraphaceae was established in Asterinales to include the sole lichenicolous genus Hemigrapha (Dai et al. 2018).
The family is characterized by solitary to gregarious, superficial, black to dark brown, coriaceous, stellateascomata with irregularly opening from the center to margin. Peridium is composed of two parts: a black outer layer composed of thick-walled cells, and a thin inner part, composed of light brown cells. Hamathecium is composed of a few brown unbranched, filamentous, septate, pseudoparaphyses around asci. Asci are bitunicate, clavate to cylindric-clavate, subglobose, 8-spored, with an ocular chamber and a short pedicel. Ascospores are 3-seriate to irregularly arranged, brown, ellipsoid, 1-septate, asymmetric, smooth-walled (Hawksworth 1975a).
Type genus : Hemigrapha (Müll. Arg.) R. Sant. Ex D. Hawksw. (Hawksworth 1975a)
Other accepted species: Species Fungorum – search Hemigraphaceae
References
Hawksworth DL. 1975a – Notes on British lichenicolous fungi: I. Kew Bulletin 30 (1), 183–203.
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 9 June 2026