Sclerotinia atrostipitata Svrček, Czech Mycol 42 (3): 145 (1988) [MB # 133749].

Type.

CZECH REPUBLIC • Central Bohemia: Prague, Žižkov, a single apothecium on Ceratodon, growing in pot with rooting Evonymus, 25 March 1986, M. Svrčková (holotype: PRM 948329).

Discussion.

Sclerotinia atrostipitata was described among the rhizoids of living stems of the moss Ceratodon purpureus (Svrček 1988). The species was described based on morphology and meets only some of the criteria for inclusion in Sclerotinia. It produces definite sclerotia and possesses hyaline ascospores. However, it is unclear whether the ascospores are single-celled. Species of Sclerotinia are defined by cells of the outer excipulum of the apothecium being globose and oriented perpendicularly to the apothecial surface. In S. atrostipitata, these cells are described as globose or subglobose, and there is no mention of their orientation. Additional work is required to evaluate the taxonomic placement of S. atrostipitata.