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 38

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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 38

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[page]36.[/page] beginning at the apex, PL.IX. fig. 4. The unfertilized archegonia remain open and slowly die. From the base of the sporogomium arises an envelope, the parianth or 'calyptra', which is fissured at the apex and persistant. A transverse section of it is shown, PL.IX. fig. 1.d. The capsule when ripe is globular, exserted, and opens by several irregular revolute teeth or segments, PL.III. fig. 3.a. The elaters are long, slender, attenuated at each end and bispiral. The spores are smooth yellow and chlorophyll bearing. M. polymorphia is regarded as the only true cosmopolitan among the Liverworts. It is found in Greenland, Labrador and throughout the