. Contributions from the Osborn Botanical Laboratory. Plants. IX THE POLYPODIACEAE 367 Pteridium and Woodsia were obtained from the wild botanical gardens of Minneapolis, Minnesota, through the courtesy of Miss Eloise Butler. The spores of Woodwardia were collected near Ann Arbor, Fig. 2. Branched prothallia of Onoclea sensibilis L., X 125. Cultures of these genera were made by sowing the spores on distilled water and on soil. A series of cultures of Camptosorus, Phegoptens, Pteridium, Onoclea, Scolopendrium, and Woodivardia were made by sowing the spores on Knop's and Prantl's full
. Contributions from the Osborn Botanical Laboratory. Plants. IX THE POLYPODIACEAE 367 Pteridium and Woodsia were obtained from the wild botanical gardens of Minneapolis, Minnesota, through the courtesy of Miss Eloise Butler. The spores of Woodwardia were collected near Ann Arbor, Fig. 2. Branched prothallia of Onoclea sensibilis L., X 125. Cultures of these genera were made by sowing the spores on distilled water and on soil. A series of cultures of Camptosorus, Phegoptens, Pteridium, Onoclea, Scolopendrium, and Woodivardia were made by sowing the spores on Knop's and Prantl's full solutions and on certain modifications of these solutions. The formulas used in making up Knop's and Prantl's ('81) nutrient solutions are as follows: Knop's Solution MgS04 g. Ca(N03)2 K2HPO4 g. KCl g. FeCh trace Prantl's Solution K2SO4 NaCl CaS04 MgS04 Na3P04 NH4NO3 solution, per cent. 20 The modifications employed were the following:. 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 Osborn Botanical Laboratory. [New Haven?] Osborn Botanical Laboratory, Yale University
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