“…The graminid family Poaceae comprises nearly 12 000 species in 12 subfamilies widespread mainly in grasslands and forests all over the world (Grass Phylogeny Working Group II, 2012;Soreng et al, 2015Soreng et al, , 2017, diversity for which anatomical studies have often provided useful features that aid in identification and delimitation at various taxonomic levels (e.g. Calderón and Soderstrom, 1973;Zuloaga et al, 1992Zuloaga et al, , 1993Aliscioni et al, 2003Aliscioni et al, , 2016Guglieri et al, 2008;Oliveira et al, 2008;Pelegrin et al, 2009;Leandro et al, 2016a), and also often indicate potential synapomorphies for clades (Judziewicz et al, 1999;Grass Phylogeny Working Group, 2001;Clark et al, 2015;Leandro et al, 2016bLeandro et al, , 2017.…”