DIY History | Transcribe | Scholarship at Iowa | A brief description of nine species of Hepaticae found in the vicinity of Iowa City by Mary F. Linder, 1886 | A brief description of nine species of Hepaticae found in the vicinity of Iowa City by Mary F. Linder, 1886, Page 16

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A brief description of nine species of Hepaticae found in the vicinity of Iowa City by Mary F. Linder, 1886

A brief description of nine species of Hepaticae found in the vicinity of Iowa City by Mary F. Linder, 1886, Page 16

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[page]14.[/page] subsequently pushes its way. The latter now becomes differentiated to form a cylindrical thread like columella consisting of from twelve to sixteen rows of cells which are elongated in an axial direction. The cells of the surrounding layer become divided by horizontal walls and form the sperm cells of the spores and elaters. The elaters are derived from transverse rows of cells. The intermediate cells become rounded and isolated progressively from the apex to the base of the sporogonium, and after growing still further divide into four spores tetrahedrally. The ripe pod is one half to one inch in height. It is slender needle shape, of a brown color, and splits into two linear valves to free