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Phenology of selected bryophytes in southern Illinois


, : Phenology of selected bryophytes in southern Illinois. Bryologist ng 82(1): 29-36

Maturity indices of Atrichum angustatum (Brid.) B.S.G., Diphyscium foliosum (Hedw.) Mohr, Trichocolea tomentella (Ehrh.) Dum., Nowellia curvifolia (Dicks.) Mitt. and Lophocolea heterophylla (Schrad.) Dum. populations in southern Illinois [USA] are discussed. Indices are based on biweekly observations made over 1 yr and are correlated with vapor pressure deficit, temperature, light quality and quantity and daylength. Depending on the species, these microenvironmental factors variously affect the vegetative growth, gametangial formation, fertilization and subsequent growth of the sporophytes. Moisture conditions seem most critical to vegetative growth and survival, and photoperiodism seems to be the dominant factor in gametangia formation. Lophocolea is apparently a day neutral plant in reference to gametangia formation while Diphyscium, Atrichum and Trichocolea are long day plants. Gametangia in Nowellia are also formed under long day conditions but their formation, once initiated, is continuous until dessication of the population.

US$19.90

DOI: 10.2307/3241964


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