I916. No. 8. MONOGRAPH OF THE NORWEGIAN PHYSCIACEAE. II 



protruding towards the surface, sometimes deeply immersed in the medulla. 

 Pseudocortex of a variable thickness. 40 — 160 u thick, yellowish brown 

 at the exterior part, otherwise uncoloured. Hyphae rather thick-walled, 

 densely interlaced, especially towards the surface, more or less parallel to the 

 surface. Medulla white, not distinctly marked off from the cortical strata. 

 Towards the lower side the hyphae are more densely interlaced and thick- 

 walled, uncoloured at the circumference of the thallus,othenAise brownish-black. 

 Apothecia numerous., sometimes covering the whole central part oi 

 the thallus, sessile, orbicular or angular, 1.5 — 3.5 mm. in diam., naked, 

 plane, brownish-black or black. Receptacle paler than the thallus, yellowish 

 or yellowish-brown rugulose. Margin thick, per- 

 sistent, crenate. occasionally appendiculate. At 

 the exterior part of the receptacle the hyphae 

 are more densely interlaced and have thicker 

 walls than at the interior part. Gonidia glomerate, 

 ver\' crowded in the margin, and in a thick 



Fig. I. .\napt%-chia fusca 



Stratum under the hypothecium. Hymenium iHcds t Wain 



thick, 200 — 270 u, brownish at the exterior 



part, otherwise uncoloured. Paraphyses easiU' discrete, at the apices 

 clavately incrassate (3 — 4 u thick), indistinctly septate, undivided or 

 more or less branched, frequently with oil-drops, especially in the tips 

 of the short lateral branches. Asci thick-walled, 120—135« lo"»' 35 — 42." 

 thick, octosporous. Spores obliquely biseriate, first uncoloured, finally 

 opaque, deep brown, straight or slightly fabiform, rounded at the ends, 

 constricted at the septum, 31 — 51 u long, 18.5 — 25 u thick (usually 40 — 

 44X18.5-21 u)K 



Pycnides ver}- rare (I have only found one sterile pycnide). After 

 Harmand 1. c. ^Spermaties bacillaires, obtuses à chaque bout, 0,006 — 7X 

 0.0008.« 



React. Cortex and medulla uncoloured by KOH as well as by 

 CaCL02. H3menium blue by J, asci persistently blue, paraphyses and 

 gelatine later blackish or dark sordid red. 



Hab. Grows on maritime rocks above the high-water mark. On 

 the humid Atlantic coast it is also recoreded at i or 2 km. from the shore, 

 not exposed to the sprinkling of the water; also recorded at the base of 

 the trunks of trees. 



* After Crcmbie and Th. Fries: 30—44X18—25, Harmand: 32 — 35X18 — 26. Jatta 

 32-44X18 — 26, Nylander: 32— 44X'8 — 26. 



