169 
SCHISMATOPTERIDES. 
OSMUNDA, OSMUNDA. 
1 Regalis, B. Flowering-Fern, 
cinnamomea, B. woolly 
Aspidium, 
1 Thelypteris, B. 
2 Feiix femina, B, 
3 spinulosum, B. 
4 cristatum, B. 
FILICES. 
Shield-Fern. 
Lady-Fern 
Female 
crested-prickly 
lesser-crested 
HYDROPTERIDES. 
Isoetes, Quill-wort, 
1 lacustris, A, marsh 
Pilularia, 
1 globulifera, B 
Pill-wort, 
pepper-grass 
