Blechnum L.

2. Blechnum L. Blechnum comprises around 25 species, the majority of these being Neotropical, with some species occurring in southern Africa (Gasper et al. 2016). In Brazil, 15 species occur (Dittrich & Gasper 2023). In the area of study, two species were recorded, with both new records in the State of Maranhão. Within these species, Blechnum areolatum V.A.O. Dittrich & Salino is highlighted as a new occurrence for the Brazilian Cerrado. Key for the species of Blechnum in the PNNRP, Brazil 1. Veins partially anastomosing; lamina 1-pinnate, not narrowed at the base; 1–2 pairs of pinnae .............. ................................................................................................................................. 2.1. Blechnum areolatum 1’. Veins free; lamina pinnatisect, gradually narrowed towards the base, forming semicircular lobes; 5–21 pairs of pinnae ............................................................................................................ 2.2. Blechnum asplenioides