-98- 



The material at hand lacked calyptra and peristome. An examination 

 of Macoun's No. 620 from Victoria, B. C, shows it to be R. depressum instead 

 of R. protensum. Since the only report of the occurrence of R. protensum in 

 the western part of North America seems to be from Macoun's collection near 

 Victoria, its reported presence seems to be due to error. The two species seem 

 to differ in the following: 



(a) R. depressum — Capsule-body about 2.5 mm. long; leaves smooth. 



{aa) R. protensum — Capsule-body about 1.8 mm. long; leaves with paired 

 papillae over the cell-walls. 



{To he concluded in January number) 



UNUSUAL HABITATS 



Elizabeth M. Dunham 



A student of mosses so soon becomes accustomed to finding certain species 

 in their accustomed habitats that a moss growing out of the usual place at once 

 attracts attention. The following are cases that have interested the writer: 



Sphagnum was found on rock on top of a hill at Holderness, N. H., June, 

 1915. Unfortunately the specimen collected was lost so that the species cannot 

 be given. 



Dicranum viride (Sull. & Lesq.) Lindb. grew on trees high above one's head 

 at Upper Dam, Rangeley Lakes, Me., Sept., 19 16. 



Dicranum montanum Hedw. was collected at Upper Dam, Me., Sept., 1916, 

 on rock and on the ground, as well as on trees and decaying logs. 



Drummondia clavellata Hook, was collected on rock at Hot Springs, Arkan- 

 sas, by Mrs. Frank E. Lowe, Jan., 1915. 



Ulota ulophylla (Ehrh.) Broth, was found by Heyward Scudder growing 

 on rock at Grand Manan, N. B., June, 1914. It at first seemed probable that 

 the specimen had fallen from a tree and lodged on the rock but, when the locality 

 was again examined, several specimens of the same moss were found on rock 

 and in every case away from trees. 



Funaria hygrometrica (L.) Sibth. has been found several times on the mortar 

 between the rocks of stone walls, growing mixed with Br yum argenteum. 



Mnium cuspidatum (L.) Leyss. was found in the crotch of an old willow 

 by Heyward Scudder in New Brunswick, August, 19 14. 



Mnium hornum L. was collected in water in Milton, Mass., May, 1916. 

 The growth was so very lax that the species was entirely unrecognizable until 

 placed under the microscope. 



Platygyrium repens (Brid.) Bryol. Eur. grows on rocks at North Worcester, 

 Mass. Collected by Mrs. Frank E. Lowe. 



Thelia asprella Sull. was also collected on rock by Mrs. Lowe at the lime- 

 stone quarries at Bolton, Mass. The specimen was determined by Dr. Grout 

 who said he had never heard of this species growing on rock, before. 



