. Our ferns in their haunts [microform] : a guide to all the native species. Ferns; Fougères. 143 THE WOOD FERNS. i ! V»^. also been described at different times as a variety u( buth species. Present day students, huwever, unite in con- sidering it distinct. Nevertheless it is a form to puzzle the novice, since it is so easily confused with other species that it often requires careful study to separate them. In the cutting of the fronds it is most like sfinulosuin ; \\ (^vf" shape it approaches cristatum. This species attains a height of from two to three feet. The fronds are half erect a
. Our ferns in their haunts [microform] : a guide to all the native species. Ferns; Fougères. 143 THE WOOD FERNS. i ! V»^. also been described at different times as a variety u( buth species. Present day students, huwever, unite in con- sidering it distinct. Nevertheless it is a form to puzzle the novice, since it is so easily confused with other species that it often requires careful study to separate them. In the cutting of the fronds it is most like sfinulosuin ; \\ (^vf" shape it approaches cristatum. This species attains a height of from two to three feet. The fronds are half erect and oblong-lanceolate in outline. The blade is about twice pinnate. In the lower part, the pinnai are triangular- ovate and again pinnate with oblong, bluntish divisions, the largest of which are cut into blunt segments with bristle- like teeth at the apex. In the upper, the are lanceolate, broadest at base with broad, bhint-toothed seg- The frond is always twice pinnate be- low, a point that makes its separation from the 'rested fern easy. It is, however, somewhat variable in its cutting and some forms are likely to be often referred to spinulosum. The fertile fronds are much like the sterile in shape though usually slightly taller and more deeply cut. The sori are rather smaller than those of cristatum and borne in a similar double row on the pinnules. Nearly all specimens have a tendency to produce one or more sori on the teeth of the pinnules as well, thus obscur- ments. As/iiiiium luK' 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 N. (Willard Nelson), 1869-1950. Toronto : W. Briggs
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