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 24

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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 24

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[page]22.[/page] called the obturator ring and is subject to contraction and expansion like the guard cells of ordinary stomata and regulates the exchange of gases and moisture between the plant and the external air. Often in making a section some of the root hairs are cut lengthwise and when looked at through the 1/5 obj. show internal projections arising from the walls as represented in PL.V. fig. 1. [f or g?]. Among the root hairs, Amphigastria are found, PL.V. fig. 2. a. These consist of a single row of simple cells and are frequently of a bright purple color. The symmetry of the dichotomous branching of the frond is often interrupted by the development