THE BRYOFHYTA OF ICELAND 463 



Fam. orthotrichaceæ. 



95. Amphidium lapponicum (Hedw.) Schimp. 



Anæctangiiim lapponicum Hedw. 



Very common. 



This species usually grows on damp rocks, espccially in clcfts and 

 crevices, but mav also occur on a more dry subslratum, for instance in 

 lava caves and among stenes on heaps of dcbris at fool of cliffs (Urd). 

 It grows both on bare rocks and on humus in rock-clefts, occasionally 

 also in gravelly soil or on earth, and even upon the sides of knoils in 

 bogs. It does not appear to ascend to any great heiglit on the moun- 

 tains ; it is most widely distributed up to 200—300 metres above sea- 

 level, but it has, however, been found, although scnntily, up to about 

 500 metres above sea- level. 



The fruit was usually ripe in the first lialf of June. 



96. Amphidium Mougeotii (Br. eur.) Schimp. 



Aiiæctangium Mougeotii Lindb. 



Iceland (Morch; Stp.)!. E. Iceland: Seydistjordur!; Stod H. J.)!; 

 Hof near E^jafjordur (O. D.!); Hrutafjordur (St.)!; Mwatn (Grl.)!. XW. Ice- 

 land: Kaldalon.'; Bæirl; Arngerdareyri !; Dynjandi!. West, Soulh-wcst and 

 South Iceland: common!. 



Common all over the southern and western part of the country 

 and probably also in NW. Iceland, ccrtainly cverywhere north of Isa- 

 fjordur. In N. Iceland it appears to be rarer. but occurs abundantly 

 near Eyjatjordur. In E Iceland it is common everywhere around Sey- 

 disfjordur and is probably also frequent elsewherc. It usually grows 

 in large, thick cushions on damp rock-sides in clefts, and by waterfalls. 

 but is also one of the species most commonly found in lava-caves. 



This species rarely ascends to any great height on the mountains. 

 In Esja it occurred 400 metres above sea-levei, and has nowhere been 

 collected at a greater altitude. Only sterile specimens have been found. 



97. Ulota phyllantha Brid. 



Ulota maritima C. M. et Kindb. 



Weissia maritima Britt. 



E. Iceland: Everywhere along the coast from Hornafjordur to Be- 

 rufjordur!. XW. Iceland: Frequent around Isafjordur!. \V. Iceland: Snæ- 

 fellsnes (H. J.;;!; Stykkisholmurl; common near Reykjavik, Hafnarfjordur 

 and everywhere around Hvalfjordur!. S. Iceland : Vestmannae}'!. 



This species is probably common everywhere along the coasts, 

 where it grows in company with Grimmia maritima quite close to the 

 sea-side. It is only rarely met with at a distance from the sea. as, for 

 instance, around Reykjavik, and in a few piaces in the lava-Helds near 

 Hafnarfjordur. The reason why it has not been collected in Xorth 



