466 A. HESSELBO 



Like O. Blyttii it grows on dry rocks and in many places in 

 company with this. It has been everywhere collected in fruit. 



FAM. ENCALYPTACE.E. 



106. Encalypta ciliata (Hedw.) Hoffm. 



Leersia laciniata Hedw. 



Iceland (Morch)!. E. Iceland: Hornafjordur! ; Djupivogur!; Hof!; Beru- 

 fjordur!. N. Iceland: Ljosavatn!; Tvera in Oxnadalur!. W. Iceland: 

 Stykkisholmur !. Common in South and West Iceland (Grl. ;!). Vestmannaey !. 



This species has its widest distribution in the southern part of the 

 country, where it is common from Berufjordur in East Iceland and 

 thence southwards and westwards as far as Borgarfjordur. It has not 

 been found in NW. Iceland and it is less frequent in North Iceland. 



It grows sometimes in small colonies on humus-covered rocks, 

 sometimes in rock-fissures filled with soil, usuallj 7 associated with Mnium 

 orthorrhynchnm , Anoectangiiim lapponic.um , Bartramia ityphylla, Pohlia 

 cruda, Distichinm, Mynrella spp. etc. It has its main distribution in 

 the lowlands. In Esja it ascends on exception to about 400 metres 

 above sea-level. 



In E. Iceland the fruit was quite unripe at the end of June; at 

 Ljosavatn it had just ripened on July 19, but the calyptra still per- 

 sisted. In S. Iceland, also, it ripens in the latter half of July. 



107. Encalypta rhabdocarpa Schwgr. 



Leersia rhabdocarpa Lindb. 



Common in localities similar to those of the preceding species; it 

 often occurs abundantly also on the peat-walls of houses and on walls. 

 It is met with both near the coast and in the interior of the country 



v 



for instance, abundantly at Reykjahlid and is frequent as far up- 

 wards as almost 500 metres above sea-level. 



The fruit ripens, as a rule, at the end of June, but both overripe 

 and just ripe capsules may frequently be found in the same tuft much 

 later in the year. 



Var. pilifera (Funck) Br. germ, frequently occurs in company with 

 the type. 



108. Encalypta contorta (Wulf.) Lindb. 

 Leersia contorta Lindb. 



W. Iceland : Budahraun, on lava (H. J.)!, sterile. 



Note. Encalypta vulf/aris is recorded by Zoega and Morch, and 

 E. commntata by Lindsay, but no specimens of either species occur in 

 the collections. Georgia pcthwida is recorded by Zoega and Vahl as 

 found in Iceland, but of this species, also, no specimens are found in 

 the collections, and all the above records are no doubt due to erroneous 

 determinations. 



