THE FERN BULLETIN 



71 



been noted by the writer in Montgomery county, grow- 

 ing on red shale. 



ASPLENIUM EBENOIDES R. R. Scott. Scott's 



Spleen wort (Asplenium ebeneum. X Camptosorus rhiz- 

 ophyllus). Very rare. Usually on limestone, though 

 sometimes on other formations. If I may judge from 

 my own experience with this hybrid in the field, I am 

 inclined to regard its seeming preference for limestone 

 as being due to the fact that it is only on that forma- 

 tion that Camptosorus riots in the open, there meeting 

 Asplenium ebeneum in its chosen haunt, equally fruit- 

 ful. I have seen the walking-fern luxuriating in the 

 grass on the north side of a limestone boulder a foot 

 square, on a dry, open sunny slope, "rubbing elbows" 

 with splendid plants of A. ebeneum. This, of course, 

 was an outpost of the main colony of Camptosorus 

 which grew in a more shaded situation. When on 

 other formations, I find the walking-fern confined to 

 the deep woods, smaller, less "sportive" and carpeting 

 mossy rocks where ebeneum is a mere dwarf and sel- 

 dom fruitful. While both alleged parents occur 

 throughout the State, ebenoides is only known from 

 the eastern portion. Northampton, Lehigh, Chester, 

 Berks, Lancaster, York, Monroe and Montgomery 

 counties. Type station in last named county. 



Asplenium fontanum (L). Rock Spleenwort. 

 On limestone rocks. North America's claim to this 

 species rests upon two doubtful records. It is alleged 

 to have been gathered by Mr. J. M. McMinn along 

 Lycoming Creek, Lycoming County, Pennsylvania, in 

 July, IS 69. Specimens were sent with other plants to 

 Prof. T. C. Porter of Lafayette College, but it was 

 not until sometime after McMinus' death that the spe- 

 cies was identified. Efforts to rediscover the fern have 



