1916. No. 8. MONOGRAPH OF THE NORWEGIAN PHYSCIACEAE. 2Q 



Univ. (1810) p 477, ACHARIUS Synopsis (1814) p. 215. SOMMERFELT 

 Supplern. Fl. Lappon. (1826) p. in. 



Physcia stellaris FR. NYLANDER Synopsis (1860) p. 424. 



Physcia stellaris var. aipolla NYLANDER Lich. Scand. (1861) p. in. 

 Ph. stellaris a adpressa var. aipolia Tn. FRIES Lich. Scand. I (1871) p. 139. 

 LYNGE Busk og bladlaver (1910) p. 103. 



Physcia aipolia NYLANDER Addenda Nova Flora (1870) p. 38. WAINIO 

 Adjumenta I (1881) p. 135. CROMBIE Brit. Lich. (1894) P- 3 J 3- HuE 

 Lich. Extra-Eur. (1900) p. 60. DALLA TORRE et SARNTHEIM Die Flechten 

 von Tirol (1902) p. 158. ELENKIN Lich. Ross. Med. {1907) tab. V, fig. 8. 

 HARMAND Lich. France (1909) p. 619. SANDSTEDE Flechten d. n. w. deutschen 

 Tieflandes (1913) p. 234. 



DALLA TORRE and SARNTHEIM write (I. c.) Physcia aipolia (HRH.) 

 NYL , founded on EHRHART PI. crypt, exsicc. 207 (1785). I have not the 

 plant of EHRHART before me, and cannot decide whether it really is our 

 species. Anyhow the combination of the said authors is incorrect, for 

 EHRHART named his plant Lichen ambiguus*, not ^Lichen aipolius*. 

 According to the Schedae of ZAHLBR. Krypt. Exsicc. no. 1980, the col- 

 lection of EHRHART is not valid as a foundation for lichenological nomen- 

 clature. 



Exsicc. ANZI Lich. Ital. sup. 117 (var. acrita, s. n. Parntelia stel- 

 laris var. ambigua}. CLAUD, et HARM. Lich. Gall, praec. 127. CUMMINGS, 

 WILLIAMS & SEYMOUR Lich. Bor. Amer. Ed. II, 168 (var. acrita, s. n. 

 Physcia stellaris (L.) TUCK.). FLOERKE Deutsche Lichenen (var. acrita, s. n. 

 Panmlia aipolia ACH.). HAVAAS Lich. Norv. 215 (var. anthelina}. HEPP 

 Flechten Eur. 877 (var. acrita}. LEIGHTON Lich. Brit. 6 (var. acrita, s. n. 

 Parnielia stellaris ACH.). MALBRANCHE Lich. Norm. 25 (var. acrita s. n. 

 Physcia stellaris}. MALME Lich. Suec. 205 (inter anthelinam et acritam}. 

 MASSALONGO Lich. Ital. 318 (A. var acrita B. var. anthelina, s. n. Squa- 

 maria aipolia MASS.). MIGULA Krypt. 92 (var. acrita}. SCHAERER Lich. 

 Helv. 350 (var. acrita}. STENHAMMAR Lich Suec. 73 inf. (var. acrita, s. n. 

 Parmelia stellaris Fr.). ZAHLBRUCKNER Krypt. Exsicc. Vindob. 2078 

 (var. acrita}. 



Thallus middle-sized or large, orbicular, diam. up to n 12 cm., 

 rigid, closely appressed to the substratum and attached through 

 branched rhizinae of dark or pale colour. Laciniae stellate, of varying 

 length, i 1,5 mm. broad, usually broader, up to 2 2,5 mm. at the ends, 

 and rounded, crenate or incise. Laciniae either repeatedly furcate or 

 pinnate, with man}- short lateral branches; in some varieties they are 

 contiguous or even imbricate, in others discrete. The\ r have an irregularly 



