We 
OSMUNDACEAE 
Osmunda 
1. Sterile and fertile fronds bipinnate, the sterile with 
Simple pinnmules....eccccsescceseccccevcccesesceveseess Of regalis 
1. Sterile fronds once pinnate, with pinnatifid pinnae; 
fertile fronds separate, cinnamon-colored, densely 
WOOLY. ce reeeecercreerececcecvcecsecccevevccscccvcvoeses Of Cinnamomea 
Osmunda regalis L. var. spectabilis (Willd.) Gray 
(var. not in Britton & Brown) Royal Fern 
Java Farm. One station: Ravine on east-facing slope between 
Fox Point Road and Fox Creek estuary. Hectare 3544. Canopy of Pinus 
virginiana. Associate species: Osmunda cinnamomea. Higman 516. 
0. cinnamomea L. Cinnamon Fern 
Java Farm. Principal station on north shore of Hog Island 
near junction with salt marsh. Hectare 3582. Canopy of Quercus 
prinus, Q. alba, etc. Second station in Hog Island salt marsh near 
border of mainland. Hectare 3572. Partial canopy of young 
Quercus falcata, Q. stellata, Q. phellos. Third station at east- 
facing slope between Fox Point Road and Fox Creek estuary. Hectare 
3544 (same site as 0. regalis above). Canopy of Pinus virginiana. 
Higman 104, 442, 515. 
POLYPODIACEAE 
1, Indusium obsolete, 
2. Fronds leathery, evergreen, simply pinnatifid. 
Expected (Polypodium). 
2. Fronds herbaceous, deciduous, 2- to 4-times 
pinnate or pinnatifid. 
3. Rhizome short and stout, forming a crown; fronds 
lanceolate, in vase-like clumps.......-.++...-.. Athyrium 
3. Rhizome slender, long and forking; fronds deltoid 
or broader, solitary or scattered.........+.+++. Dryopteris 
1. Indusium present. 
4, Indusium formed by revolute margin of the frond. 
Expected (Pellaea, Cheilanthes, Dennstaedtia). 
4, Indusium not formed by margin of frond, either dorsal 
or marginal. 
