Cranfillia Gasper & V.A.O.Dittrich

Dittrich, Vinícius Antonio De Oliveira, Salino, Alexandre, Monteiro, Reinaldo & Gasper, André Luís De, 2017, The family Blechnaceae (Polypodiopsida) in Brazil: key to the genera and taxonomic treatment of Austroblechnum, Cranfillia, Lomaridium, Neoblechnum and Telmatoblechnum for southern and southeastern Brazil, Phytotaxa 303 (1), pp. 1-33 : 13

2. Cranfillia Gasper & V.A.O.Dittrich in Gasper et al. (2016a: 207).

Type: Cranfillia fluviatilis ( Brown 1810: 152) Gasper & V.A.O.Dittrich in Gasper et al. (2016a: 207).

Plants terrestrial; rhizomes short-creeping to usually suberect or erect, stoloniferous or not, slender to stout, clothed with reddish brown to blackish, sometimes bicolorous, lanceolate or oblong-attenuate, entire scales with acuminate tips; fronds dimorphic; stipes slender or stout, short to long, stramineous to dark brown, scaly proximally, often abundantly hairy, or hairs sometimes sparse to absent; blades concolorous, linear-oblong to deltate, pinnate or deeply pinnatifid proximally, pinnatifid distally, proximally truncate or with gradually to subabruptly reduced pinnae; rachises scaly and often pilose, the hairs uniseriate, septate, sometimes sparse; buds absent or rarely present (in C. caudata ); aerophores absent; pinnae subpetiolulate proximally or often becoming fully adnate distally, oblong to lanceolate, sometimes falcate, entire to crenate or dentate along margins; veins free, 1 × or 2 × forked, terminating adaxially in small submarginal hydathodes; sori linear, indusia more or less entire, sometimes with uniseriate hairs; x = 33.