as the frond is pinnatifid with very much rounded lobes up to the 

 tip. Below it is pinnate with very irregular pinnae which are 

 rhombic, deltoid, or oblong, and more or less auricled, and at- 

 tached by a broad base. This form is least like Camptosorus. In 

 the third form we have a linear frond about half an inch broad 

 and five long, deeply lobed and much "crisped" except below, 

 where there are a few pinnae attached by a broad base. In one 

 frond these pinnae remind one of the segments of Botrychium 

 lunaria. The fronds of form three are fertile, the others sterile 

 except for a few scattered sori at the tip of a frond of the first 

 type. Anastomosing veinlets are found in the first and third 

 forms. The sori are borne irregularly as in Camptosorus. 



Botanists who have seen these specimens or photographs of 

 them have said that they are excellent evidence in favor of the 

 theory of hybridity. It is certain that they are as clearly inter- 

 mediate between the two supposed parent species as are the 

 specimens usually found, and yet they are quite distinct in ap- 

 pearance from the latter. The fact that they grew near both 

 parent species is not to be overlooked, and the position of the 

 sori is also good evidence in favor of hybridity. Not so much 

 stress can be laid on the character of the venation since we have 

 the same state of affairs in A. pinnatiiidum. In its stem charac- 

 ters it is also intermediate. The stipe and lower half of the 

 midrib are dark brown and polished as in A. ebeneum. The upper 

 part of the stipe is two-ridged on the sides so that it appears two- 

 grooved in front. This is a characteristic of Camptosorus. In 

 A. ebeneum the stipe is not ridged, and its fibro- vascular bundles 

 resemble those of ebenoides more than those of Camptosorus. 

 The length of the stipes connects them with Camptosorus. The 

 writer is in favor of the theory of hybidity, but is forced to con- 

 fess that the lack of a single pinna of typical ebeneum form is a 

 difficulty not easy to set aside unless we assume that the Camp- 

 tosorus exerts a greater influence upon the hybrid than does the 

 other parent. 



— Mr. Thomas Wareing reports collecting Cystopteris fragilis 

 magnasera at Millbrook, N. J., and Mr. J. C. Buchheister also col- 

 lected it in the Catskill mountains of New York. No doubt it will 

 prove to be a common form. 



