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easily removed, probably owing to the partial destruction of the deeper parts 

 which are then deprived of light. 



Bartramia pomiformis (L.) Hedw. Mt. Pilot. A very beautiful moss with 

 peculiar globose capsules not met often in this habitat. It prefers the damp walls 

 of river cliffs. Common in the Laurentide district. . 



Calliergon Schreheri (Willd.) Kindb. Riviere-du-Loup. Quartzite hills. 

 A ubiquitous moss that can live in very dry places. 



Dicranella heteromalla (L.) Schimp. Mt. Pilot. Dicranella is typical on 

 the quartzite hills, while at a very short distance, on the seashore cliffs it passes 

 to the variety orthocarpa (Hedw.) E. G. B. which is the alpine form of the species. 



Dicranum undulatum Ehrh. Mt. Pilot. Common. 



Drepanocladus uncinatus (Hedw.) Warnst. Gros Pelerin Island. Common. 

 The species of Drepanocladus are generally water-loving. D. uncinatus is less 

 exacting as to moisture. D. vernicosus (Lindb.) Warnst., and D. Wilsoni (Sch.) 

 Roth., are also met in the region but not on the quartzite hills. 



Grimmia apocarpa (L.) Hedw. Gros Pelerin Island. Fruiting on the 

 boulders of the seashore. 



Hedwigia albicans (Web.) Lindb. Mt. Pilot. This moss on account of its 

 xerophytic adaptations is the leading form of plant life on the quartzite hills. 

 It spreads on extensive ledges where absolute siccity prevails. 



Hypnum fertile Sendt. Gros Pelerin Island. This moss is common in this 

 habitat, though it is rare elsewhere, and its presence seems to be conditioned 

 more by the subarctic factors of the seashore than by the quartzite-hill habitat 

 itself. 



Hypnum imponens Hedw. Gros Pelerin Island. Growing very luxuriantly 

 in this locaHty. 



Hypnum pallescens (Hedw.) B. & S. Gros Pelerin Island. What has been 

 said of H. fertile applies to this arctic-alpine moss which is sometimes considered 

 as the northern form of H. reptile Mx. 



Leskea polycarpa Ehrh. Gros Pelerin Island. Common. 



Leucodon Sciuroides (L.) Schwaegr. Gros Pelerin Island. Abundant there. 

 This moss is very seldom collected. 



Myurella Careyana Sulliv. Gros Pelerin Island. This is an uncommon 

 moss, growing chiefly on calcareous rocks. The products of the disintegration 

 of the dolomitic nodules included in the quartzite, could perhaps account for the 

 presence of Myurella on Gros Pelerin Island. 



Neckera pennata (L.) Hedw. Mt. Pilot. 



Pohlia cruda (L.) Lindb. Gros Pelerin Island. Growing with Myurella 

 Careyana, and having the same preferences for limestone. It is considered as a 

 subalpine species. 



Polytrichum commune L. var. uliginosum Huebener. Mt. Pilot. This 

 variety characterized by its leaves which are spreading-reflexed when dry is 

 characteristic of peat bogs and high altitudes. It is considered as rare outside 

 of the Rocky Mountains and the Pacific Coast. Its presence in Eastern Quebec 

 is indeed worthy of record. 



