I92I. Xo. 7- STUDIES OX THE LICHEX FLORA OF NORWAY. I27 



8. Peltigera eriimpens (Tayl.) Waix. 



Akcrsh. Ski: Nordby (B. L.I, Aker: Lut\and (B. L.I, Bærum: Kolsaas 

 I Kiær I, Asker: Skogumsaasen (B. L.l, Minne: Feiringveien (B. L.I. Busk. 

 Hoh Holstjorden (B.L.I, and Odnak (B.L.I, Gjeilo: Hotsdalen (B. L.l. 



Hord. Tysnes: \'aage-Opdalseidet (H.), Granvin (H.I, \"oss: Rene (Lid I. 



Hcd. Tron (B. L.l, Veldre: Aslaberget (Nordh.I. Opl. Lorn: Kjæstad 

 (B. L.). 



Sortr. Do vre: \'aarstien (B. L.l. 



Nordl. Ofoten: Fagernes (Norm. I. Troiiis. Harstad: Trondenes (B. L.l, 

 Maalselven: Nordbynesset (B.L.I, Maalsnes (B. L.l, Moen (B. L.), and SoUi 

 (B. L.), Bardo: Stremsmo (B. L.l, Rokkomborre (B. L.), Leinavand (B. L.), and 

 Astejok (B. L.), Tromsø (Norm. I; Lyngen: Lyngseidet (B. L.), and Skibotn 

 (B. L.l. Fiiiin. Alten: Kaafjord (B. L.), Sakkobani (B. L.), Konsamfjell (Norm.), 

 and Store Raipas (B. L.l; Porsanger: Osterbotn (B. L.l, and Skoganvarre 

 (Norm. I; Tana: \'estôrbugt (B. L.l, and Langnes (B. L.l. 



On gravelly road-sides and the like, along mossy and sandy brooks, 

 also in old fire-places, and occasionally on the dung of the cattle, or on old 

 decayed wood. 



It has a wide vertical range. 



1 have not seen it on the highest summits, but it surpasses the upper 

 forest line (in Granvin, Hardanger, it ascends to 900 m. s. m.l. 



Peltigera criunpeus was o\'erseen in Norwa}' by former investigators, 

 its distribution is, therefore, little known. It is common in Northern Nor- 

 way, especially in Troms fylke. Most probably it is also common in the 

 inland provinces of Southern Norwa}', at least it has been found where it 

 has been looked for. — Its distribution in the western and southern coast 

 provinces is as yet entirely unknown, but it is common at the western fjords 

 (ace. to Havaas). 



Only seen sterile in Norway. 



Often infested with a parasite. 



There are 3 Norwegian species of the genus Peltigera, developing 

 isidia-like scales, e. g. P. eniinpcns, P. lepidopliora, and P. praetcxtata. 



The 'scales' of P. enimpeiis are more like rounded or globose granu- 

 lations, arranged in rounded spots on the thallus; they soon break up, 

 forming rounded soralia. P. enmipens is the smallest of the three species, 

 the indi\idual thalli rarely surpass i cm. in diam. It has a characteristic 

 urceolate thallus, owing to the involute margins. 



Many authors refer this species to' P. caniiia or to P. spuria. I agree 

 with Taylor, Waixio and Du Rietz in regarding it a proper species. 



Either of these species is larger than P. erumpens, especially P. prae- 

 tcxtata which can attain 14—15 cm., P. lepidopliora is rarely larger than 



