“ Raynal Dodge collected some specimens which he regarded as of hybrid origin between Nephrodiutn spinulosum and N. marginale. These I have had under examination for some time, but in the absence of the rootstalk, and other necessary data, I have not been able to satisfy myself as to their exact status. ”

“ Rootstock decumbent, as in D. spinulosa, between which and D. marginalis the plant is a probable hybrid. Fronds fasciculate, crosiers densely clothed with pale brown scales; stipes 6–12 inches long, usually about one-third the length of the frond, stramineous, browning with age, especially below, deeply furrowed along the face, and clothed with a mixture of broad, narrowly ovate, and linear-lanceolate acuminate entire or lacerated brown scales, darkest below and often with blackish brown centres, paler and transparent above, becoming chaffy along the strongly grooved and winged rachises ”