— 120 — 



Papers," a pamphlet containing a full report of the papers pre- 

 pared for the meeting. 



After this brief sketch of what t\\e Fern Chapter has accom- 

 plished within the short space of ten years, it hardly seems neces- 

 sary to urge upon our readers the advantages of membership in 

 the Chapter. To any person who takes the slightest interest in 

 ferns, these facts speak loudly for themselves. The But,lKTin as 

 a medium for the publication of new facts and discoveries; the 

 receipt of many new fern publications without extra charge; the 

 opportunity to obtain a number of rare species at a merely 

 nominal cost, and the comradeship of many fern collectors and 

 enthusiasts scattered all over the United States, who are willing 

 to correspond and to make exchanges ; these would seem to be 

 sufficient in themselves to induce a much larger number of per- 

 sons to become members and to aid in developing a knowledge of 

 the fern flora in the particular regions where they reside. If each 

 member will do a small amount of missionary work, we can 

 double our present numbers within a year. 



A NEW EQUISETUM. 



By Alvah A. Eaton. 



Several years ago I received from Mr. C. K. Dodge, of Port 

 Huron, Mich., specimens of an Bquisetum for determination, 

 which, from external aspect, were referred to B. laevigatiim. A 

 careful study of an abundance of material of both this and un- 

 doubted laevigatiim, collected in nearly every State west of the 

 Mississippi, has shown it to be really a variety of hiemalc, in- 

 termediate between that and laevigatiim, possessing the internal 

 characters of the former with most external ones of the latter. 

 In most characters it agrees with B. Moorei Newm. (hiemale 

 Schleicheri Milde), ascribed by Milde to this country, probably 

 on material identical with this, but the stems of this are usually 

 persistent, and (except inconstantly in Suksdorf 2134, Washing- 

 ton) the angles are beset with cross-walls or silex instead of two 

 rows of dots. From its position between the American form of 

 iiiemalc and lacvigatum I propose to call it B. hiemale inter- 

 medium. 



