51 



III. AGYRATAE 

 Capsulis iiiultilocnlanbiis 



Marattia (4), Danaea (2). 



Capsulis bivalvibus 



Ophioglossum (9), BoTKVciiiUM (7). 



Besides the above genera Swartz also treated under the Ly- 

 copodineae the genera Lycopodium (65*), Tmesipteris (i), and 

 PSILOTUM (2). 



Swartz' work is of special importance to us at this time since 

 many of his species were based on collections he made in the 

 W^est Indies when he visited Jamaica and Haiti in the years 

 1784-1786. His collection, which we have not yet seen, is pre- 

 served at the Academy of Sciences at Stockholm and is said 

 to be in a most excellent state of preservation. Various writers 

 on West Indian ferns, notably Jenman, have referred to various 

 types of Swartz as being found in the British Museum. It is true 

 that some of the earlier botanists occasionally distributed their 

 type material during their lifetime, and it is also true that some 

 specimens of ferns came to the British Museum from Swartz, but 

 there seems to be no warrant or at least no certainty that any of 

 his types ever came there : in fact all the probabilities are against 

 it, and his types must be sought in his native country. Swartz 

 also published shorter papers on ferns, the last being published 

 in 1 8 17, only a year before his death. 



The next enumeration of ferns was made by Willdenow in 

 18 10 '■" in the fifth volume of his edition of Species Plaiitaruui, 

 although his work on ferns had commenced in 1802 with his 

 publication of the genera Todea and Hydroglossuju [Lygociiuin) 

 followed in 1804 by Mertensia, and in 1809 by Struthiopteris and 

 Lomaria. His enumeration included 43 genera of ferns and 

 1008 species, enriched by the collections of Humboldt and Bonp- 

 land in meridional America, as well as by those of Bory and 

 others mostly described here as new. Willdenow's collection is 



*An enumeration of the known ferns was commenced by Lamarck in the E>uy- 

 doptdie Miihodique in 1783 and was completed by Poiret in 1808. This however 

 contained only 444 species in contrast with the 716 described by Swartz in 1806, 

 and 1008 described by Willdenow in iSlO. 



