. Carnegie Institution of Washington publication. THE ADULT SPOROPHYTK 103 noted in the bundle of B. virgintanum. The position of the sporangiophore is some- what different in different species. In Eubotrychium it is attached, as a rule, close to the junction of the sterile lamina and the petiole, very much as it is in Euophioglossum. In B. ternatum and B. obltquum the long peduncle is inserted very much further down, sometimes almost at the level of the ground, so that at first sight the spor- angiophore seems to be quite independent of the sterile leaf. In B. virgintanum ph~-. x~.l. Fig. 76.
. Carnegie Institution of Washington publication. THE ADULT SPOROPHYTK 103 noted in the bundle of B. virgintanum. The position of the sporangiophore is some- what different in different species. In Eubotrychium it is attached, as a rule, close to the junction of the sterile lamina and the petiole, very much as it is in Euophioglossum. In B. ternatum and B. obltquum the long peduncle is inserted very much further down, sometimes almost at the level of the ground, so that at first sight the spor- angiophore seems to be quite independent of the sterile leaf. In B. virgintanum ph~-. x~.l. Fig. 76. Tetrarch root of Batrychium virgintanum en, endodermis; x, xylem; ph, phloerrii. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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