Abstract
IN Great Britain the sporogonium of Pellia epiphylla is fully differentiated into foot, seta and capsule by the end of September. Under natural conditions elongation of the seta, resulting from the extension of its individual cells, does not take place until the following year, usually from late February onwards. Elongation appears to follow the maturation of the spores of which external indication is given by a darkening of the capsule wall. During a period of not more than 3–4 days the seta elongates from 1 mm. to upwards of 80 mm.
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ASPREY, G., BENSON-EVANS, K. & LYON, A. Effect of Gibberellin and Indoleacetic Acid on Seta Elongation in Pellia epiphylla . Nature 181, 1351 (1958). https://doi.org/10.1038/1811351a0
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DOI: https://doi.org/10.1038/1811351a0
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