THE BHYOPHYTA OF ICELAND 421 



64. Cephaloziella rubella (Nees.) Warnst. 



Typical specimens of this species vvere collected in the following 

 localities: 



S. Iccland: Hornafjordur !. E. Iceland: Seydisfjordur!. X. Iceland : 

 Hafrardalur (St.)!; Altureyri!, at an altitude of about 500 metres!; Hof 

 (OD.!. SW. Iceland: Kollafjordur!. S. Iceland: Holt!. 



It was foiind everyvvhere woven into tufts of Sphcnjnum spp. and 

 Dicramim spp. {D. fuscescens and D. angiislum) and usually mixed witli 

 Cephalozia bicuspidala and Lophozia spp., now and then also with C. 

 Hampeana. Near Isafjordur it grew sparingly in a tuft of Mniiim hornum, 

 which was densely interwoven with Cephalozia pleiiiceps. It was col- 

 lected everywhere in fniit. 



C. rubella is an uncertain species which when sterile is in many 

 cases hardly distinguishable from C. Hampeana. 



C. divavicata and C. bifida are recorded from several piaces in Ice- 

 land, but the specimens belong either to C. Hampeana or to C. rubella. 

 Gronlund's C. divavicata from Melar is Lophozia quadriloba. 



65. Odontoschisma Sphagni (Dicks.) Dum. 



W. Iceland: Snældubeinstadahver in Reykholtdalur!. 



It was found in the above locality in small quantity woven into a 

 tuft of Sphagnum rubellum on a warm substratum. 



This species is recorded from Iceland in several old lists and is 

 figured in Flora Danica, tab. 2251 (leg- Morch), but all the specimens 

 found in the collections under this name are those of O. elongatum. 



66 Odontoschisma elongatum (Lindb.) Evans. 



"In Islandia' (Morch!). E. Iceland: Hof!; Lon!; frequent near Sey- 

 disfjordur!. N. Iceland : Hvarf (St.!; Akureyri!. W. Iceland: Budahraun 

 (H.J.)!; Grund in Skorradalur !; common around Reykjavik!. S. Iceland: 

 Holt! at an altitude of about 400 metres. 



It grows usually woven into tufts of bog mosses such as Sphagnum, 

 Hypnum and Oncophorus spp., Meesia trichoides, Lophozia Kunzeana, 

 more rarely upon moss-tufts or on wet ground, in small brownish tufts. 

 Only sterile specimens have been found. 



A specimen collected by Morch, having tiny, inconspicuous under- 

 leaves and less thickened cell-walls bearing fine warts, forms a transi- 

 tional form to O. Sphagni. 



67. Odontoschisma denudatum (Mart.) Dum. 



W. Iceland: Braudarholt near Reykjavik! (^. 



It grew in the above locality on boggy ground among other Bryo- 

 phyta. 



