Clavulina J. Schröt., in Cohn, Krypt.-Fl. Schlesien (Breslau) 3.1(25–32): 442 (1888) [1889]
Notes – Currently there are 87 recognized species of Clavulina. This genus is distributed in temperate and tropical ecosystems being particularly diverse in the tropics, with 21 new species being described from the Neotropics in the last 15 years (Thacker and Henkel 2004; Henkel et al. 2005, 2011; Uehling et al. 2012a, 2012b; Wartchow 2012; Tibpromma et al. 2017; Pérez-Pazos et al. 2019). Species are characterized by their clavarioid basidiomes, simple or branched, and with matte colors ranging from white, to grey or purplish tones. Microscopically these species have smooth globose to subglobose basidiospores, generally less than 10 µm long; the cylindrical to sub-clavate basidia usually with two incurved sterigmata (4–8 µm long) is considered a main characteristic of the genus; and sometimes transversal septa develop in the basidia after basidiospores release (Corner 1950, 1970; Petersen 1988; Olariaga et al. 2009), but this character is unstable even among different specimens of the same species.
Species