92 THE VOYAGE OF H.M.S. CHALLENGER. 



Isopterygium tenerum, Mitt. 



Isopterygium tenerum, Mitt, in Journ. Linn. Soc. Lond., xii. p. 499. 

 Hypnum tenerum, Swartz, Fl. Ind. Oca, iii. p. 1817. 



Bermudas. — Well-fruited specimens. 



The species is probably spread throughout all the West Indian Islands and the more 

 northern parts of South America, but seems replaced in Brazil by some other similar 

 forms. In Trimen's Journal of Botany, ix. 295, Mr Spruce has some remarks on this 

 group, whicb he considers identical with Plagiothecium. He there quotes the characters 

 by which Leucomium was described for those of Isopterygium, so that, notwithstanding 

 he had himself gathered all these mosses, and had the very best means of understanding 

 them, his conclusions are derived from a fallacy, and have no pertinence, Leucomium 

 being composed of species very different ; and it is noteworthy that Schimper did not 

 include the European Isopterygium depression in his enumeration of the species of 

 Plagiothecium, but put it in his Rhynchostegium. 



Sphagnum cymbifolium, Ehrh. 



Sphagnum cymbifolium, Ehrh. in Hannov. Mag., 1780, p. 235, ex C. Miiller, Synop. Muse. Frond., 

 i. p. 91. 



Bermudas. — Barren. 



Sphagnum cuspidatum, Ehrh., var. plumosum. 



Sphagnum cuspidatum, Ehrh., Crypt., n. 251 ; C. Miiller, Synop. Muse. Frond., i. p. 96, var. plumosum. 



Bermudas. — Without fruit. 



HEPATIC^!. 

 Cephalozia connivens, Liudb. 



Cephalozia connivens, Lindb. in Journ. Linn. Soc. Lond., xiii. p. 190. 



Jungermannia connivens, Dicks., Crypt, fasc, iv. p. 19, t. 11, fig. 15; Hook., Brit. Jung., n. 15. 



Blepharostoma connivens, Dumortier, Rev. Jung., p. 18, et Hepaticse Europa?, p. 96. 



Bermudas. — A few fragments, aud on Riccardia. 



Pleuroschisma prostrata, Mitt. 



S v hagnoecetis prostrata, G. L. et N., Synop. Hepat., p. 149. 

 .1 'n ugcrmannia prostrata, Sw., Prodr. Fl. Ind. Oca, p. 143. 



Bermudas. — In spreading tufts. 



This seems to differ from the common round-leaved states of Pleuroschisma sphagni 

 in its rather smaller size aud more oval oblong leaves. It is found also iu Europe. 



