Rough Maidenhair Fern 
Rugulose Grapefern 
Rustyback 
Sceptridium dissectum 
Schizaea dichotoma 
Schizaea elegans 
Scouring rush 
Sea spleenwort 
Sensitive fern 
Shiny Fan Fern 
Sickle Fern 
Silver fern 
Silver fern 
Smooth Scouring Rush 
Soft Fern 
Southern Adder's Tongue 
Southern Ladyfern 
Southern maidenhair fern 
Southern Polypody 
Sphaeropteris cooperi 
Spiny tree fern 
Staghorn fern 
Staghorn fern 
Sticherus truncatus