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 22

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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 22

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[page]20.[/page] and are attached to the ground by numerous rhizoids which usually grow in abundance on the ventral surface, along the median line, PL.IV. fig. 3. a., and when the frond is partially raised, are suspended like a delicate vail of milkweed floss. The plant body consists of several well defined layers of tissue. First a thin spidermal layer on the ventral surface, from which the rhiqoids arise, PL.V. fig. 1. a, above this is a series of layers of cells which are larger. PL. V. fig. b., above this again is a layer containing reticulately scattered air cavities, in which the cells grow up in a conferra-like way, and finally a well developed epidermal system, the structure of which is a characteristic feature of the order. It con-