igi6. No. 8. MONOGRAPH OF THE NORWEGIAN PHYSCIACEAE. 6l 



Ex sic. NoRRL. et Nyl. Herbarium Lichenum Fenniae no. 218 (1882, 

 s. n. Pliyscia coustipata). 



Th. Fries referred his specimens to i> Anapfychia ciliaris y /iio)u7ts 

 Kbr. Parerga p. 19«. They do not, however, agree with Koerber Lieh. 

 Sel. Germ. no. 102, which is a Pliyscia niuscigena, but with Norrl. et 

 Nyl. No. 218. — Nylander proposed his ^constipatav. as a variet}' in 

 1873. as a species in 1882. 



Thallus moderate or large, 6 — 10 cm., ver}'' fragile. Laciniae as- 

 cendent or erect, closely imbricate or even panniform, but usually free 

 at their apices; they are thin and narrow, lacerato-incise at their 

 apices. Colour greyish or gre3'ish-br o wn, under side of the 

 same colour or entirely uncoloured. Laciniae smooth, without isidia 

 or soredia, epruinose or (nearly imperceptibly) pruinose at their apices (strong 

 lens). There are some scattered, pale or nearly uncoloured rhizinae along 

 the margin of the laciniae, and very few on the under side. 



Upper cortex plectenchymatous, u n c o 1 o u r e d, 25 — 3o_u thick, hyphae 

 distinct, pellucid, constrictediy septate with rounded articuli. Gonidia ar- 

 ranged in a very regular stratum under the upper cortex, also in scat- 

 tered glomeruli within the lower cortex. Lower cortex uncoloured 

 or only pale brown about the rhizinae, on erect free laciniae distinctly 

 marked out from the medulla, plectench 3' matous, and built as the 

 upper cortex, on closely imbricate laciniae only locall}' plectenchymatous, 

 usually gradually transformed into the medulla, and with h3'phae parallel 

 to the surface. 



Apothecia not seen. 



Pycnides with a prominent ostiolum, globose, diam. 130 — 160«. Peri- 

 fulcrium uncoloured or of a pale brown colour, darker at the ostiolum. 

 Pycnoconidia broadly cylindrical with rounded apices, 3,5 — 4 a long. 



Reaction: Cortex and medulla uncoloured b}- KOH as well as by 

 CaCloOo. 



Loc. Central Norway: Gudbrandsdalen between Øien and Kleivstad, 

 Northern : Storviksnésset in Alten and Aid in Varanger (Th. Fries s. n. Pliyscia 

 piilvenilenta (Schreb.) Nyl. y limiiilis (Kbr.) Nyl. The specimens pre- 

 served in the botanical museum of Upsala. 



I have never seen it in nature, but the pale colour, narrow, lacerate, 

 usually epruinose laciniae with marginal rhizinae entitle it to a specific 



