UKRNT I.YNüK. M.-N. Kl. 



On llic stems ;iii(l branches dI" many deciduous trees (hardly on iUtulaiS. 

 It is one of the few j^reat lichens lound on Oiicrais. In Norway it is but 

 very sparini^ly tound on stones. 



Raiiia/iiKj fiiniuicca is a fre(|iient lowland species on the coast and at 

 the fjords in SoLitheni Norwas'. it is evidently rare though not absent in 

 inland provinces. It is common as far north as Trondhjem. All the speci- 

 mens lecorded fi"om Tromso and i'inmark belong to R. nngiistissiina ( •— 

 R. siibfariiiaccd). It hardly ascends higher than 400 m. s. m. 



Apothecia rarissima, lateralia, brexiter stipitata, pai'va — diam. 2 — 3 

 mm. Discus epruinosus, pallida glaucus vel pallide carneus, planus vel dein 

 convexus, margo primo crassus, mox exclusus. Receptaculum thallo con- 

 color, rugosum; cortex receptaculi hyphis distinctis pachydermaticis formatus, 

 du[)lex: paite exteriore hyphis perpendicularibus, interiore hyphis superficiei 

 parallelis vel in omnes partes directis, formatas. Gonidia glomerata, infra 

 corticem strato continuo, infra hypothecium strato crasso inclusa. Hymenium 

 50 — 55 [J., parte exteriore obscure coloratum et strato tenui amorpho vel 

 postremo insperso tectum. Paraphyses cohaerentes, apice leviter solum 

 incrassatae, apice parce ramosae vel vulgo indivisae. Sporae rectae, anguste 

 limbatae, ellipsoideae, mçdio non constrictae, septatae vel interdum indivisae, 

 10 — 14.5 -4.7 — 6.6 [x. 



The anatomy of the thallus has been described by Schwexdexer 

 (Untersuchungen I, p. 156, tab. \', fig. 7), and by Hue (Lieh. Extra-Eur. 

 suite (i), p. 72. 



The thalline cortical hyphae are not so distinct as those of the recepta- 

 culum. Grown-out parts oï the thallus (towards the basis) possess a cortex 

 which has very indistinct hyphae at its exterior part, they are + perpen- 

 dicular to the surface. At the surface itself there is hardly any structure 

 to be detected. This part of the cortex — or the cortex vcriis — is 2d 

 — 30 |x thick. The inteiior part is composed of more distinct not plecten- 

 chvmatous hyphae + parallel to the axis. This part which is of very irre- 

 gular thickness, has been compared with the central chondroid axis of 

 Ustiea. There is no distinct limit between the 'two cortices.' — At young, 

 apical parts of the thallus the structure of the cortex is more distinct. 



The development of the apothecia well deserves an investigation. I 

 could not detect an 'interior cortex' under the hypothecium in this species, 

 such as described for Alcctoria iiidulifcra, and several other species of the 

 same family. 



6. Ramalina angustissima (Axzi) Waix. 



Syn. R. siihfariiiacaa Nvl. cfr. Krypt. Exsic. \'ind. 1252. 

 Map I, 4. 

 Østf. Eærder (Schub.), Eloen (B. L.). J'cstf. Wasser (B. L.l, Tonsberg 

 Tonde (B. L.), Tjomo (B. L.), Tjolling (Hoeg). X'ikstjorden (B. L.). 



