FLORA OF THE GALAPAGOS ISLANDS. 101 



March ksinia, S. F. Gray. 



M. brachiata (Sw.) Schiffn. in Engl. & Prantl. Nat. Pflanzenf. i. 

 Abt. 3, 128 (1893). — Duncan Isl. : Baur. Widely distributed in 

 tropical America. Phragmicoma galapagana, Angstr. 1. c. 114, and 



O 



P. nigrescens, Angstr. 1. c. 115, are very close to this extremely vari- 

 able species. Both were collected by Andersson. 



NOTOTHYLAS, Sull. 



N. orbicularis (Schwein.) Sull. Mem. Am. Acad, new ser. iii. 64, 

 t. 4 (1846). — Albemarle Isl.: Tagus Cove, Snodgrass & Heller. 

 Widely distributed in eastern N. Am. ; also European. 



Omphalanthus, Lindenb. & Nees. 

 O. filiformis (Sw.) Nees, Syn. Hep. 304 (1845). — Charles and 

 James Ids. : Darwin. Widely distributed in tropical America, espe- 

 cially in mountainous regions. 



Peltolejeunea (Spruce) Schiffin. 



P. galapagona, Steph. Hedwigia, xxxv. 123 (1896). — Charles 

 Isl. : Andersson. Endemic. 



Plagiochasma, Lehm. & Lindenb. 



P. ? — Albemarle Isl. : Iguana Cove, Tagus Cove, and mountain 

 east of Tagus Cove, Snodgrass & Heller. Charles Isl. : Baur, no. 

 3<S0 (lib. Harvard Univ.). Narborough Isl.: south side, 615m. 

 alt., Snodgrass & Heller. The specimens are all sterile and in- 

 determinable but seem referable to a single species. 



Plagiochila, Dum. 



P. Anderssonii, Angstr. 1. c. 114; Rose (1), 138. — Galapagos 

 Ids.: Andersson. Chatham Isl. : A. Agassiz. Further distrib. Cocos 

 Island of the Pacific. 



o 



P. spinifera, Angstr. 1. c. — Galapagos Ids. : Andersson. 

 Endemic. 



Radula, Dum. 



R. retroflexa, Tayl. Lond. Jour. Bot. v. 378 (1846). — Galapagos 

 Ids. : Andersson. Also known from the " Pacific Islands," Nightingale. 



Riccia, Mich. 



R. ? Sterile and indeterminable. — Albemarle Isl. : Iguana Cove, 



Snodgrass & Heller. 



