Lake Maxinkiickee, Physical and Biological Survey 203 

 15. NARROW-LEAVED SPLEENWORT 



ASPLENIUM PYCNOCARPON Spreng. 



This fern is quite rare in the region about the lake, and, indeed, 

 is very scarce throughout the northern part of Indiana. It usually 

 occurs in rich deep woods. Our specimens came from northeast 

 of the lake. A few were found in rich woods near Plymouth which 

 is about 10 miles north of the lake. It is a thin delicate fern, 

 bearing some general resemblance in form to the Christmas fern. 

 It withers quickly on being cut. 



16. SILVERY SPLEENWORT 



ATHYRILIM THELYPTEROIDES (Michx.) Desv. 



A specimen of this fern was collected by Dr. Scovell in 1900, 

 probably in Farrar's woods. 



17. LADY-FERN 



ATHYRIUM FILIX-FOEMINA (L.) Roth 



This delicate, pretty fern is occasional in Farrar's woods, in 

 moist shady places in rich ground. 



18. MAIDEN-HAIR FERN 



ADIANTUM PEDATUM L. 



This dainty well-known fern is fairly common in some places in 

 Farrar's woods. A few were found also near a pond back of Cul- 

 ver's, on the east side of the lake. Some also grew near a pond 

 by Busart's field. Most of the plants were rather small, and it 

 does not attain the luxuriance of growth near the lake that is often 

 observed in moist rich woods. In well protected situations it re- 

 tains its form, and frequently its color, late into the winter. In 

 spite of its delicate appearance it does not crumple up at the first 

 touch of frost, but the fronds frequently ripen and bleach out 

 gradually after the manner of the beech-fern. 



The Maiden-hair Fern is one of the plants to rapidly disappear 

 before the march of civilization and in many places it is becoming 

 quite rare. It thrives only in the humid, dusky depths of thick 

 woodlands, and such changes as pasturage and thinning out of 

 forests quickly cause it to die out. 



19. BRAKE; BRACKEN; EAGLE FERN 



PTERIDIUM AQUILINUM (L.) Kuhn 



This coarse, well-known fern grows abundantly in the region 

 of the lake and is particularly common in the open sandy ground 



