Cerotiola ericoides, northern limit of, H. B. Croom, xxvi, 315.
Cetraria Tuckermanii, xlv, 48.
Chamœrops palmetto, locality of, xxvi, 315.
Charæ of North America, by A. Braun, xlvi, 92.
Clematis reticulata, xiv, 115.
Corydalis formosa, and canadensis, xxvi, 114.f
Cranichis multiflora, v, 302.
Craterium pyriforme, J. W. Bailey, xlii, 195.
— —, shown to be an Acarus, xliii, 205.f
Cryptogamia of Chelmsford, notice of a memoir on, by J. L. Russel, xxxix, 183.