I92I. No. 7- STUDIES OX THE LICHEN MORA ( >1 MiRW \^. 1 37 



Pannclia tiibiilosa is usual!}' smaller than Paniiclia pliysodcs, but on 

 even substratum, as shingle-roofs, it attains a diam. of" lo — ii cm. and an 

 orbicular thallus with laciniae radiating in all directions and closely appressed 

 at the circumference of the thallus. 



Apothecia are ver^- rare. Hava.\s found fertile specimens in Granvin 

 on Bctiila, I ha\-e looked much after them, onl}' once succesfully (at Lyngor). 

 Pycnides unknown. 



Apothecia — in specimine — apicalia vel subapicalia, brexiter 

 stipitata, cup uliform i a, sat parva, diam. 1.5 — 3.5 mm. Discus profunde 

 concavus, epruinosus, subnitidus, badius; receptaculum thallo concolor, levi- 

 ter rugosum, margo integer. Cortex receptaculi inaequalis, facile sorediose 

 ruptus, 15 — 35 [J. crassus, parte exteriore leviter obscuratus; h3'phae cor- 

 ticis conglutinatae, valde indistinctae. Cortex interior aequicrassus: 16 — 40 [j.. 

 Medulla alba, hyphae medulläres adspersae, ramosae, 5 — 6 [x crassae. Gonidia 

 infra cortices strato subcontinuo disposita, in ipsa medulla vulgo desunt. 

 Hypothecium sat angustum, 10 — 13 ;j. altum. Hymenium 40 \j. crassum, 

 parte superiore flavofuscescens, ceterum incoloratum, non inspersum, strato 

 tenui amorpho tectum. Paraphyses indistinctae, cohaerentes, apice fusco- 

 capitatae, indivisae vel (rarius) ramosae, septatae. Asci numerosissimi, sac- 

 cati, 25 — 32 \J. longi, 13 — 16 \j. crassi, membrana apice normaliter incrassata. 

 Sporae distichae, ovales vel subgiobosae, 5.2 — 7.4 \j- longae, 3.7 — 5.3 \j. 

 crassae; episporium sat angustum. 



React. Hymenium J e caeruleo mox sordide flavescens, parte apicali 

 ascorum solum persistenter caerulescens. Hypothecium J persistenter dilu- 

 tissime caerulescens. 



4. Parmelia farinacea Bitter. 



Østf. Fredrikssten (B. L.), Larkollen (B. L.). Akc)\<li. Ski: Nordby 

 (B. L.), Kristiania (Norm.), Aker: Ljan (B. L.), Østensjo (B. L.), Ekeberg 

 (B. L.), Grorud (B. L.), Grefsenaasen (B. L.), and Bonnkjern (B. L.), Bærum: 

 Lokeberg (Kiær), and Kolsaas (B. L.), Minne (B. L.). Vcstf. Tjolling (Høeg), 

 Malmoen (B. L.). 



Aiistagd. Lyngør (B. L.). 



Hard. Granvin: Aasene (H.), Voss: Palmefossen (H.). 



Pannclia farinacca was overlooked in our country by former collec- 

 tors, there was only one (undetermined) specimen in Norman's herbarium. 

 Its distribution in our country is, therefore, insufficiendy known. But in 

 the last years it has been much looked for, and it can with certainty be 

 stated that it has a remarkably unequal distribution, in some districts (e. g. 

 about Kristiania) it is common, in most others very scattered, only a tew 

 specimens being found from each station. It is, perhaps, a species of 

 recent immigration. In central Sweden it is common, in Norway a plant 

 of chieflv south-eastern distribution. 



