. Our ferns in their haunts; a guide to all the native species. Ferns. THE ROCK SPLEENWORTS. JHE spleenwort family is one of the dominant fern families of the world, and is represented in eastern America by more species than any other. A strong family resemblance runs through them all, though they present few of the problems in identity so common in other ferns. The young collector will vote them very satisfactory to study. As a group they may be recognised by their bearing sporangia in linear sori that are covered with indusia fixed by their inferior sides and opening toward the midrib. In si
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. Our ferns in their haunts; a guide to all the native species. Ferns. THE ROCK SPLEENWORTS. JHE spleenwort family is one of the dominant fern families of the world, and is represented in eastern America by more species than any other. A strong family resemblance runs through them all, though they present few of the problems in identity so common in other ferns. The young collector will vote them very satisfactory to study. As a group they may be recognised by their bearing sporangia in linear sori that are covered with indusia fixed by their inferior sides and opening toward the midrib. In size and habitat the species fall into two fairly natural groups, the small ones being all rock-loving plants and the large ones preferring to grow in rich earth. The rock spleenworts will be treated of in this chapter. 'The Maidenhair Spleenwort. The dainty little maidenhair spleenwort {Asplenium Trichomanes) although not the smallest of the Aspleniwns is the smallest of our common ferns. After the poly- pody, it is probably the most abundant of all the strictly rock-loving kinds. It prefers the nooks and shelves of dryish, shady cliffs where it roots in the smallest crevices. 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 work.. Clute, Willard Nelson, b. 1869. New York, F. A. Stokes Co