— 90 — 



EXCHANGE DEPARTMENT 



Offerings — To members only. Return postage should accompany the re- 

 quest. 



Mr. Edward B. Chamberlain, i8 West 89th Street, New York City— Pohlia 

 pulchella Lindb. c. fr., collected in Connecticut by Dr. Nichols. 



Mrs. Frank E. Lowe, 24 Brattle Street, Worcester, Mass. — Amhlystegium 

 irrigMum var. spinifolium Schimp., and Thelia Lescurii, both collected in Okla- 

 homa. 



Mr. Roy Latham, Orient, N. Y. — Pyrenula nitida (Schrad.) Ach., and 

 Sagedia cestrensis Tuck., both collected in New York. 



Mr. C. C. Plitt, 3933 Lowndes Ave., Baltimore, Md. — Gyrophora Dillenii 

 (Tuck.) Miill. Arg., collected in Maryland. 



