Leaf cross-sections of Iberian species of the Festuca sect. Aulaxyper from lineage 2: A F. juncifolia BF. rubra subsp. pruinosaC F. rivularis D F. rothmaleri (in detail abaxial surface not scalloped) E F. nevadensis F F. iberica (in detail scalloped abaxial surface) G F. nigrescens HF. heterophylla subsp. braun-blanquetii (H1 innovation leaf, in detail inflated adaxial epidermal cells; H2 cauline leaf) IF. heterophylla subsp. heterophylla (innovation leaf); and from lineage 3: J F. pyrenaica. Scale bars: 0.2 mm.