118 



was a very remarkable one, which in habit and general 

 structure seemed to be intermediate between Anthoceros and 

 Jmigermannia, but possessing a capsule of only one valve: in 

 other words, which opened on one side to permit the dis- 

 charge of the seeds: and now I have the satisfaction of 

 receiving from the Rev. Lansdown Guilding another species 

 of the same genus, which he found growing on the branches 

 of trees in the Island of St. Vincent. 



Here, as in the genus Jungermannia and Marchantia, we 

 find different bodies originating in the frond, which we can 

 by no means compare with those of other plants, and 

 destined perhaps to aid the still farther increase of this plant 

 beyond what might be accomplished by the seeds or sporules. 

 In some fronds I have observed attached to the nerve, or 

 midrib, sphaerical bodies, (fig. 2,): in others, it would appear 

 as if these bodies had germinated whilst still attached to the 

 frond, and become young plants: but then they are most 

 curiously perforated, very much in the same way as the 

 whole substance is found to be in Fucus Agarimi, and quite 

 unlike any thing we find in the parent frond. 



A columella exists in the present species, and is remark- 

 ably slender; and probably I have overlooked a similar 

 structure in the Monoclea Fosteri, figured at Tab. 174 of 

 Musci Exotici. This brings the plant still nearer to Antho- 

 ceros, from which it will yet remain abundantly distinct in the 

 single valve of the capsule, and in the presence of the spiral 

 filament. 



The plant grows in small tufts or patches, upon the 

 branches of trees, after the manner of Jungermannia furcata 

 in our own country. 



Fig. 1, Tufts of Monoclea crispata, natural size. Fig. 2, 

 Portion with gemmae. Fig. 3, Single gemma. Fig. 4, 

 Female plant. Fig. 5, Capsule. Fig. 6, Germinating 

 gemma. Fig. 7, Portion of do. : — more or less magnified. 



