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P. Dryopteris. Aspidium marginale. A. spinulosum, variety undetermined. A. spinulosum, var. dilatatum. A. Goldianum. A. acrostichoides. A. aculeatum, var. Braunii. Cystopteris bulbifera. C. fragilis. Onoclea struthiopteris. O. sensibilis. Woodsia Ilvensis. Dicksonia punctilobula. Osmunda regalis. O. Claytoniana. O. cinnamomea. Botrychium lanceolatum. B. matricariæfolium. B. ternatum.
It is a handsome little fern about four or five inches high, has pale-green pinnate fronds, and shining bronze-colored stalks about as brittle as glass. Its companions on the lower part of its range are Cryptogramma acrostichoides and Phegopteris alpestris, the latter with soft, delicate fronds, not in the least like those of Rock fern, though it grows on the rocks where the snow lies longest.
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