500 A. HESSELBO 



196. Psilopilum laevigatum (Wahlb.) Lindb. 



Oligotrichum glabratum Lindb. 

 O. Icevigatum Br. eur. Psilopilum arcticum Brid. 



E. Iceland: Hornafjordur!; Berufjordur!; Seydisfjordur!. N. Iceland: 

 Husavik!; Akureyri!; Hof near Eyjafjordur (O. D.)!; Geitaskard!. NW. 

 Iceland: Isafjordur!; Snsefellsstrond ! . W. Iceland: Stykkisholraur ! ; Stadar- 

 fell (Stp. !; Hafnarfjordur!; Reykjavik (Morch; Ho.; Stp.;!). S. Iceland : 

 Common in Olfns!. 



Commonly distributed everywhere near the coasts. It grows there 

 on rather dry peaty ground, and often in great abundance. For instance 

 near Reykjavik it covers in association with Dicranella crispa, Bryum 

 pallens, Scapania curia, etc. large tracts of ground on the peninsula. It 

 appears to thrive more particularly in drained bogs whence peat is being 

 cut; thus around Husavik, Akureyri and Isafjordur it occurred in very 

 great abundance, partly on the ground and partly on the piled up heaps 

 of cut peat, which were often quite covered by it. Funaria hygrometrica 

 and Pogonatum iirnigerum often occurred abundantly in company with 

 it. Fruit ripens in the beginning of (Reykjavik) or at the end of June 

 (N. Iceland). 



Note. F. Ha gen in his preliminary works on a Frondose-Moss Flora 

 of Norwaj T (XIX, Polytrichacece) supposes that Psilopilum tschiictschicum 

 (Mull. Hal.) Par. has been collected in Iceland by W. F. Hooker. All 

 the specimens I have had an opportunity of investigating, both numerous 

 older specimens collected by Morch, Krabbe, Gronlund and others 

 and my own specimens collected in a considerable number of habitats 

 from all parts of Iceland, belong to Psilopilum Iwuigatum, which is doubt- 

 less the only species of this genus found in Iceland. 



197. Pogonatum polytrichoides (L.) Brockm. 

 Pogonatum nanum (Schreb.) P. B. P. siibrotundum Lindb. 



Iceland (Ho.; Morch)!. W. Iceland: Reykjavik (Grl.;!); Stykkisholmur 

 (Stp.)!: Sletta (Stp.); in the district of BorgarfjordurL S. Iceland: Near 

 the Thjorsa ;Stp.)!; frequent in Olfus!. 



This species was found only in SW. and W. Iceland, but was rather 

 common in both places on somewhat damp and especially peat} 7 soil, 

 for instance by the sides of ditches and along roads. In the district 

 of Borgarfjordur it was common along roads. Around Reykjavik it was 

 found everywhere by the sides of ditches. Fruit was found everywhere, 

 the capsules were partly old specimens from the previous year and 

 partly such as were quite young even in August. 



Note. Pogonatum aloides (Hedw.) is recorded to have been collected 

 by Stecnstrup near Sletta, Stykkisholmur and the Thjorsa. but all the 

 specimens belong to P. polytrichbid.es. 



