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 47

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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 47

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[page]45.[/page] Asterella hemispherica. This plant differs from the preceeding species in being smaller and of a pale bluish green color. The fronds are thinner, rigid, brittle, radiately and dichotomously branching, often forming circular patches. It is hardy, perennial and increases by joints from the tips of the fronds. The margins are irregularly lobed. The upper surface is distinctly porose, and the ventral surface is provided with rhizoids, and two rows of purple imbricating scales, PL.XIII. fig. 2. A transverse section of the frond shows nearly the same differentiation of tissues, as that