Aquarius peltata, at Durham. 3rd Sept. 1839 Subaffigute. young leaves oblong elliptical, the margin uneven, depressed around the stem; pale brownish, at length black. Gills, few, loose, narrow, white, at length black and dry. Stem pale, whitish, at length black; extending upwards; at length flattening into dry threads. Leaves scarcely joint high; about 3/4 inch broad, smooth, included here and there with a longitudinal furrow; the margin of the young leaves embracing the stem: from a purple down turning dusky, and at length black : this change in colour to every part of the plant, the whitish spots at first ash-grey as if tinted with ink ; the entire plant also drying and shrivelling up, the leaves and stem flattening into threads, no appearance of delescerance. Yellow. Gills in 2 sets, the intermediate very thick, covered with a shortly filamentous substance which yields black spores. There are at first pale and transparent, at length deeper black. Stem scarcely 1 inch in height, hollow, rounds upwards. Little or no odour. Taste not considerable. The taste remarkable when any part of the plant turns black, the sporules alone remain pale and under the transparent.