Xenotypa Petr., Sydowia 9(1-6): 499 (1955)
MycoBank number: MB 5828; Index Fungorum number: IF 5828; Facesoffungi number: FoF 10281; 1 morphological species.
Type species – Xenotypa aterrima (Fr.) Petr.
Notes – Xenotypa aterrima has stromata spreading around branches and often extending between the cortical parenchyma and the periderm, splitting and pushing aside layers of bark (Petrak 1955c). The genus is characterised by perithecia with papillate, cylindric-conical necks, 8- spored, clavate asci and straight, hyaline, aseptate allantoid ascospores with rounded ends, often with two rather indistinct oil droplets (Petrak 1955c).