I'm probably a little late on this entry but, remember, that older varieties of Nephrolepsis were mutations that were then propagated since the old standby Boston Fern was very very prolific in it's mutations. Also, names were given to these mutations back then and were probably changed so many times that they most likely won't be listed on many lists since there wasn't any checks and balances as we have now for registering plant names. So if you can't find the name you're looking for doesn't mean it wasn't there at one time or another. Just as today we have plants that have many different names that are the same thing. Older names just drop off and aren't remembered any more. If you have Boston ferns and it progeny, watch for those mutations that may develop from those runners that root. You just might find a new one.
