Abstract
The seasonality of maturation of gametangia and development of sporophytes of the autoicous moss Octoblepharum albidum Hedw. was investigated in a remnant of the Atlantic Forest in Pernambuco State, Brazil. Two populations of this species were sampled monthly for a period of 2 years. The results obtained were similar in both populations and are presented together. The average number of antheridia produced per perigonium was 13.4 and of archegonia per perichaetium was 6.7. The frequency of juvenile, immature and mature gametangia was considerably greater during the rainy season, when there was also an increase in fertilized archegonia. Sporophytes began their development during the rainy season and continued into the dry season, when the spores were dispersed. The reproductive pattern of this species presented a marked seasonality,apparently greatly influenced by rainfall.
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