BRITTON : TRICHOMANES RADICANS ATT 
T. radicans. We feel that the plant of the Linnaean herbarium 
should be restudied, as well as the type of 7. radicans, which 
must be at Stockholm. This would probably necessitate the study 
of all the species which have been reduced to synonyms of one 
or the other, such as 7. macroclados Kunze, T. Lindeni Presl, T. 
Mexicanum V. a. B., etc. For it is quite certain that the specimens 
in our collection which have come from various sources, include a 
great jumble of species from the West Indies, Central and South 
America and the United States. Hooker and Baker say that 7. 
radicans is a ‘‘ very widely diffused and variable plant,’’—and from 
the list of localities cited by them we do not doubt this would be 
true of their specimens so-called. 
It is quite certain, however, that our species from the Southern 
States is quite distinct, in spite of the fact that Eaton in his Ferns 
of North America says “the name proposed by Sturm, and pub- 
lished with a long description by Van den Bosch, is wholly super- 
fluous.” We feel that he is mistaken, and that it must be known 
as Trichomanes Boschianum Sturm. (Van den Bosch. Syn. 
Hymen. 160. 1868.) } 
This was recognized by Salomon in his nomenclator of the 
vascular cryptogams in 1883, but such has been the conservatism 
of North American botanists, that since Dr. Gray in 1852 referred 
the species discovered by Peters to 7. radicans, it has gone by 
this name in spite of the fact that it is totally unlike any other 
Specimens so-called, 
