286 E. A. Vainio, Lecideales. 



Thallus areolis 0.4 — 0.3 (O.2 — O.e) mm latis, nee KHO nee 

 CaCUOs reagentibus (Arn.), laevigatis, nitidis aut opacis, micro- 

 scopio visis jodo non distincte reagentibus, etsi seetio thalli, 

 hypotiiallum obscuratum et superficiem fuscescentem et gonidia 

 in jodo (exsiccata) rubricosa continens, facile ut jodo reagens 

 habeatur. Apothecia sat crebra aut dispersa, lat. O.4 — O.7 ( — 1) 

 mm, baud papillata, late adnata, basi saepe demum leviter 

 constricta. Perithecium subrubrieoso-fuligineum, KHO distinctius 

 purpureum. Hypothecium rubricoso-fuligineum, sicut etiam epi- 

 thecium KHO distinetius purpureum. Hymenium circ. O.iio mm 

 crassum. Sporae strato gelatinoso sat crasso. Conidia „breviter 

 acicularia, long. O.ooe — O.009 mm" (sec. Jatta Fl. It. Crypt. Lich. 

 p. 691). Gonidia cystococcoidea, globosa, diam. O.008 — O.014 mm, 

 vacuolis lateralibus, membrana sat tenui, interdum autosporas 

 nonnuUas continentia. 



Obs. Lecidea leptolepis f. atrobranneola Nyl. 1. c, thallo interdum 

 jodo nonnihil caerulescente descripta est (conf. supra). 



4. Rh. grande (Floerk.) Arn. 



Lich. Fragm. XII (Fl. 1871) p. 149; Th. Fr. Lich. Scand. II p. 624. 

 Lecidea petraea ,>. fuscoatra C. grandis Floerk. Fl. 1828 p. 620 sec. Arn. 

 1. c. (Floerk. Lich. Exs., 1829, n. 173 A p. p. etiam ad „L. Montagnei' 

 pertinet sec. Nyl. Fl. 1881 p. 188). L. grandis Vain. Exp. Antarct. Belg. 

 Lich. (1903) p. 32, Lich. Exp. Vegae Pitlekai (1909) p. 111. L. petraea 

 Nyl. Fl. 1870 p. 36 (haud Lichen petraeus Wulf. Winterbel., 1787, p. 90 

 sec. Arn. Zur Erinn. Wulf. in Verb. Z.-B. Ges. Wien 1882 p. 157). 

 Lecidea' parapetraea Nyl. Fl. 1881 p. 188, Hue Add. II (1888) p. 216; 

 Hue Exp. Antarct. Frang. Lich. (1908) p. 16. Lichen atroalbus Ach. Prodr. 

 Lich. Suec. (1798) p. 63 p. p. (sec. Th. Fr. 1. c. p. 625). 



Exs. Fr. Lich. Suec. Exs. XIV (1833) n. 406 B. — Sommerf. PI. 

 Crypt. Norv. II (1836) n. 128. — Malme Lich. Suec. Exs. VII (1910) 

 n. 172. 



Thallus crustaceus, uniformis, verrucosus, verrucis 

 plus miaus dispersis, convexis, laevigatis, cinereo-fusce- 

 scentibus aut cinerascentibus aut subalbidis, haud pruinosis, 

 esorediatis, KHO non reagentibus, medulla alba, jodo sub- 

 caerulescente, hypothallo nigro, Apothecia nigra, nuda, pri- 

 mum plana et tenuiter marginata, saepe demum convexa 

 immarginataque, haud papillata, sat parva aut mediocria. 

 Hypothecium fuscum. Sporae 8:nae, demum nigricantes, 

 murali-divisae, long. O.024 — O.046, crass. O.ou — O.ois mm, cel- 

 lulis numerosis aut sat paucis. 



