115 



f 



horns, that remind one of the antennae of some tropical moths. 

 Lopholejewica Riisbyi, n. sp., is one of the larger species, and is 

 fortunately in perfect state. Like its congeners it has the keels 

 of the perianth bordered by a broad toothed wing, but in the 

 acuminate serrated leaves it differs from all others. Most of the 

 remaining Lejeunea are parasitic on other hepatics, and (with the 

 exception of L, dentictilata) are in small quantity — some indeed 

 so scanty and imperfect that I do not venture to name them. Of 

 those I recognize, the majority extend through tropical America 

 io the Antilles and Mexico. 



RadulcE are few and in small quantity, but include two new 

 and very interesting species, and (what I was particularly pleased 

 to see) good specimens, though sterile, of the true R. Xalapensis, 

 Mont., which was so-named by Montague from a site called 

 Xalapa on the eastern side of Bolivia, and not from the famed 

 Mexican city. RadulcB^ like Lejctuicce, are apt to grow much 

 mixed up, and it was doubtless a specimen of R. ramtilina, Tayh 

 which Gottsche received from Montague under the name '' R. 

 Xalapensis '' (having lurked undistinguished in the same tuft with 

 the true plant) and described as such in *' Mexikanske Levermos- 

 !' A stem or two of R. ramiilina occurs attached to several 



of Dr. Rusby's Plagiochilce : it is well distinguished from R- 

 Xalapensis by its larger size, and especially by the abnormally 

 large and overlapping lobule, in which it closely approaches the 

 Irish R. volutay TayL . ' 



Scapania Portoricensis^ Gottsch. This, the only tropical 

 American species of its genus known to me, and certainly one 

 of the noblest, was gathered by myself In perfect fruit, growing 

 on wax-palms in the forest of Canelos (June, 1857) and named 

 in my MS. Scapania splcndida, but not pubhshed until 1885. I 

 did not even at the latter date know of the. existence of a memoir 



r 



on the Hepaticae of Porto Rico, by M. M. Hampe and Gottsche, 

 published so long ago as 1853, in which the same Scapania \^ 

 described, but from barren specimens, and with the erroneous 

 character of a quite entire lobule. Dr. Rusby gathered in Boli- 

 via a single very fine plant o^ it, and I have picked fragments of 

 the same off some of his other hepaticcie ; but in these, as in 

 others in Porto Rico and Jamaica iScap. grandis, Bosw. in Journ. 



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