. Our ferns in their haunts; a guide to all the native species. Ferns. Cyatoptcris 'ilji^^tl. \. Sori various ; indusium never formed of the margin of the frond. d. Sori and indusium oblong, par- allel with the midrib, somewhat sunken in the tissues of the frond ; indusium opening toward the mid- dle of the pinnules ; water-loving species. Chain ferns. WOODWARDIA. d. Sori and indusium roundish. t t Indusium peltate, fixed by the centre; evergreen species in rocky woods. Shield ferns. POLYSTICHUM. 2l6 106 t t Indusium reniform or cordate, fixed by the sinus; large, mostly woodland species. Wood
. Our ferns in their haunts; a guide to all the native species. Ferns. Cyatoptcris 'ilji^^tl. \. Sori various ; indusium never formed of the margin of the frond. d. Sori and indusium oblong, par- allel with the midrib, somewhat sunken in the tissues of the frond ; indusium opening toward the mid- dle of the pinnules ; water-loving species. Chain ferns. WOODWARDIA. d. Sori and indusium roundish. t t Indusium peltate, fixed by the centre; evergreen species in rocky woods. Shield ferns. POLYSTICHUM. 2l6 106 t t Indusium reniform or cordate, fixed by the sinus; large, mostly woodland species. Wood ferns. ASPIDIUM. 117 11 Indusium hood-shaped, attached to the frond by its broad base,. below the sorus and arching over it, soon withering ; moisture loving species. Bladder ferns. Cystopteris. 209 11 Indusium star-shaped, of a few irregular broad or narrow seg- ments fixed beneath the sorus and enclosing it when young. Not easily seen in most species. Rock- loving plants usually somewhat chaffy. WOODSIA. 93. 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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