THE BKYOPHYTA OF ICELAND 439 



Philonotis seriata, Oncophorus Wahlenbergii, Scapania nliginosa, Haplozia 

 co rdi folia and Chiloscyphus polyanthus var. frag His on inundated gravelly 

 ground up to about 300400 metres above sea-level. In N. Iceland it 

 is also rather common. Near Seydisfjordur it was found only at a 

 height of about 300 to 500 metres above sea-level, but was common 

 there in small streams associated with Scajmnia undiilata, Hijpnnm ex- 

 anmilatam, Haplozia cordifolia, etc. In Reykholtdalur this species was 

 found in several places near hot springs, even on stones in warm water 

 with a temperature of 30. In S\V. and S. Iceland it occurs rarely and 

 more sparingly; near Holt it grew in several places at an altitude of 

 loO 600 metres. 



The plant is almost always found sterile. One specimen collected 

 by O. D. near Hof in Eyjafjordur 12. 6. 1897) bore a few capsules which 

 had thrown off their lids. The J 1 plant was found only near Bceir in 

 XW. Iceland growing in low tufts, about 1 cm. high. 



17. Dicranella Schreberi (Sw.) Schimp. 

 Anisothecium crisp um Schreb.) Lindb. 



X.Iceland: Hof near Eyjafjordur (O. D.)!; Akureyri $!. W.Iceland: 

 Lund u r!. 



Xear Akureyri it grew in damp, peaty ground immediately north 

 of the town and near Lundur, associated with Bnjnm lacnstre, Aong- 

 strcemia longipes and Dichodontium pellncidiim, on a wet flat from which 

 the peat had been pared off. 



18. Dicranella crispa (Ehrh.) Schimp. 



Very common on damp ground, both on peat and on sandy or 

 gravelly soil by streams. It occurs only in the lowlands, and has hardly 

 been found higher than at an altitude of about 200 metres. Fruit is 

 always present in abundance and ripens about August 1st. At this time 

 also the setse of the capsules of the ensuing year have reached their 

 full length. 



Xote. Dicranella heteromalla is recorded by Zoega and Horne- 

 mann from Iceland, but was. undoubtedly confused with another species. 



19. Dicranella subulata (Hedw.) Schimp. 

 Dicranella secunda Sw.) Lindb. 



Iceland (Morch)!, some of the specimens are correctly determined, 

 some must be referred to Ditrichnm homomallnm. Krisuvik (Stp.)!. N. 

 Iceland: Husavik!. XW. Iceland: Kaldalon!; Gnupsdalur near Dyrafjordur!. 

 Moreover, Gronlund records it from Hvammur and Thingvellir, but 

 both specimens are wrongly determined, being Dicranella crispa and 

 Dicramim Blyttii. 



This species was collected in small quantities only, but everywhere 

 in fruit. Xear Husavik it grew on peat, and on July 11, 1909 it bore 



