P. J. HELLBOM, LICHEN^A NEO-ZEELANDICA. 143. 



in coll. Kn. Nyl. 1. c; Dunodin, Northern Island. Mull. 

 Arg. 1. c. 



2. S. mgrcscens (L.? Huds.) 



Syn. Lichen nigrescens Linn. Suppl. Pl. p. 451; Huds. 

 Fl. Angl. 



Collema nigrescens Ach. L. Univ. p. 646, Syn. p. 450 

 (1762) p. 321; Nyl. Syn. p. 114, Lich. Scand. p. 31; Babingt. 

 New Zeal. p. 44. 



Syneehoblastus nigrescens Th. Fr. Lich. Aret. p. 280; 

 Mull. Arg. Conspect. L. Nov. Zel. p. 19. 



Hab. ad cortices: Otaua Insul. septentr. (specimen par- 



vuluni, fortuito lectuni). — Middle Island Mull. Arg. 1. c. 



Distr. geogr. Europa (sat frequens), Asia (Japonia: 



Mozi, Mourayama-Onmagayeshi, E. Almqvist), Africa (Alge- 



ria, Abyssinia, Madagascar, Madera), Australia, America. 



Ceterpe species hiiius gen. in Nov. Zeel. lectfe: 

 S. aggregatiis (Ach.) Collema fasciculare ,S aggregatum Ach. 

 L. Univ. p. 640; Collema Nyl. Syn. p. 115. 

 Synechoblastus Vespertilio var. Körb. Syst. p. 

 411; Synechobl. aggregatus Th. Fr. Lich. Aret. 

 p. 280; Mull. Arg. Conspect. p. 19; Collema 

 thysaneum (Ach.) Nyl. in Flora 1883 p. 104, 

 L. Nov. Zel. (1888) p. 8. — Corticicola (Helms) 

 Nyl. Nov. Zel. 1. c. 



— Isevis (Tayl. et Hook. f.) Mull. Arg. L. B. n. 1127, 



Conspect. L. Nov. Zel. p. 19; Collema flaccidum 

 v. leeve Bab. New Zeal. p. 45; Collema leeve 

 Tayl. L. Antarct. n. 142; Krmplh. L. Novara 

 p. 128. — Truncicola: Bay of Islands Insul. 

 septentr. Mull. Arg. Conspect. 1. c. 



— ilaccidus (Ach.) Collema flaccidum Ach. Univ. p. 647 



(excl. a), Syn. p. 322; Synechoblastus flaccid. 

 Körb. Syst. p. 413; Th. Fr. L. Aret. p. 2^1; 

 Mull. Arg. Conspect. p. 19. Northern Island 

 Mull. Arg. 1. c. 



— — var. coerulescens (Bab.) Collema flaccidun 



v. coerulescens Bab. New Zeal. p. 45; Syne- 

 choblastus flacc. v. coerulescens MiiLL. Arg. 

 Conspect. p. 19. — Truncicola Mull. Arg. 



