37 



" Inglis" Falls. Below the falls occur the plants of Phyllitis, in a 

 " fairly heavy \vood in the valley and on the sloping sides of the 

 deep chasm through which the Sydenham runs after its fall. The 

 chasm is about a fourth of a mile wide, or less, its sides strewn 

 with boulders and fragments of limestone partially buried in debris. 

 Here the individuals were seldom large, i. e. seldom over 8 inches 

 long.* The fern is reckoned "abundant on limestone debris 

 under cliffs at Sydenham Falls and other localities around Owen 

 Sound (Mrs. Roy)." t 



It has also been found close by "growing in a maple wood, 

 where the rock is c lose to the surface and shows cracks of width 

 varying from two inches to two feet. It grows [here] generally in 

 the cracks, but also on the level ground, doubtless always where 

 the soil is shallow. Companion plants are Dryopteris marginalis, 

 I'olystichum lonchitis, Camptosorus, and Aspleniiini viride. % 



Phyllitis occurs also in a wild situation some twelve miles to 

 the northwest of the village. Here, too, the soil is not deep, and 

 the fern grows rather thriftily in the dark, moist, rocky woods, 

 where the limestone ( Clinton ) comes close to the surface. In such 

 places it grows on small hummocks slightly raised above, and so 

 drier than the surroundings. -' 



The finest plants are found at a point about one mile northwest 

 of the town, upon the loose limestone debris fallen from a bluff 40 

 feet high. The soil is very light, porous, and rather dry, and can- 

 not for any length of time retain ijjoisture. But the situation seems 

 especially favorable, and fronds grow from eighteen to twenty- 

 three inches long. :; ~ 



1'hyllitis grows about Owen Sound very much as in New York, 

 in loose limestone debris, and additionally, in narrow limestone 

 crevices and raised on hummocks in moist, rocky, upland woods 

 the sort of situations especially claimed for it formerly in central 

 New York by Paine. Mr. Jenkins obtains the best developed 

 specimens from the station a mile northwest of the town, where 

 the soil is the driest and most porous of any of the stations. Fur- 



* From correspondence, Prof. W. II. Jenkins, Owen Sound, Ontario, Canada. 



tMacoun, Cat. Can. PI. Part V., 268. 1890. 



% From correspondence with Mr. W. K. Saunders, I,ondon, Ontario. 



200775 



