286 Proceedings of the Ohio State Academy of Science. 



at the base, rather firm, one to three feet long ; pinnae lanceolate 

 or triangular ovate, acuminate ; petiole with large scales. In 

 moist woods and swamps. General. 



The form D. cristata clintomana (Eat.) Und. has oblong- 

 lanceolate pinnae which are broadest at the base. Wayne county. 

 (Geauga county, Hopkins.) 



4. Dryoptcris goldieana (Hook.) Gr. Goldie's Shield-fern. 



Rhizome stout and chaffy ; leaves broadly ovate, rather firm, 

 two to four feet long; petioles chatfy at least below. In rich 

 woods. Rather general, but no specimens from the southern 

 third nor from the northeastern counties. 



5. Dryoptcris iiiarginxilis (L.) Gr. Marginal Shield-fern. 



Rhizome .ascending, stout with brown shining scales ; leaves 

 evergreen, ovate-oblong or ovate-lanceolate, subcoriaceous, two 

 to three feet long ; petiole chafify ; sori near the margin of the 

 segments. In woods or on rocks. General in Ohio and common. 



6. Dryoptcris spimdosa (Retz.) Ktz. Spinulose Shield-fern. 



Rhizome chaft'y ; leaves evergreen, ovate-lanceolate, the pin- 

 nae oblicjue to the rachis ; pinnae elongated-triangular ; petiole 

 with a few deciduous scales ; indusium glabrous. In rich woods. 

 General in Ohio. 



The form, D. spinnlosa intermedia (Muhl.) Und., has ob- 

 long-lanceolate spreading pinnae and the indusium beset with 

 stalked glands. Rather general in Ohio. 



The form, D. spinnlosa dilatata (Hoffm.) Und., with 

 broadly ovate or triangular-ovate, commonly three-pinnate 

 leaves and glabrous indusia has been found by Hopkins in Tus- 

 carawas county. 



7. Dryopteris bodttii (Tuck.) Und. Boott's Shield-fern. 



Rhizome ascending ; leaves elongated-oblong or lanceolate, 

 thin, acuminate at the apex, slightly narrowed at the base ; petiole 



