. Our ferns in their haunts; a guide to all the native species. Ferns. THE MARSH FERN N Eastern America, two families of ferns divide nearly half our species between them. One of these is known as the genus Aspidium or Dryoptcris, the other as Aspleniuvi. As the genus Aspidium has been understood in America, it has in- Veluded a diversity of forms, some of which have but recently been re- moved to the genus Polystichum. Those that remain fall very natur- ally into two divisions as regards form and habitat, and to the smaller of these, of which the marsh fern may be taken as the type, w
. Our ferns in their haunts; a guide to all the native species. Ferns. THE MARSH FERN N Eastern America, two families of ferns divide nearly half our species between them. One of these is known as the genus Aspidium or Dryoptcris, the other as Aspleniuvi. As the genus Aspidium has been understood in America, it has in- Veluded a diversity of forms, some of which have but recently been re- moved to the genus Polystichum. Those that remain fall very natur- ally into two divisions as regards form and habitat, and to the smaller of these, of which the marsh fern may be taken as the type, we have for. convenience given the title of the marsh fern tribe. The species have a strong family resemblance—almost too strong, the young student may be inclined to say when he comes to study them—but a little study will soon fix the characters of each in the mind, after which they may be distinguished at a glance. The Marsh Fern. Any one who has visited a bushy swamp in the north- eastern States, where alders, button-bushes and cat-tails flourish, has doubtless seen the marsh fern {Aspidium Thelypteris). It is one of our commonest species, and al- though, as its name indicates, the marsh is its favourite. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Clute, Willard Nelson, b. 1869. New York, F. A. Stokes Co
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