Natural History of New and Rare Ferns

Containing Species And Varieties, None Of Which Are Included In Any Of The Eight Volumes Of Ferns, British And Exotic, Amongst Which Are The New Hymenophyllum... » 

Containing Species And Varieties, None Of Which Are Included In Any Of The Eight Volumes Of Ferns, British And Exotic, Amongst Which Are The New Hymenophyllums And Trichomanes «