The Mixed Ombrophylous Forest (MOF) or Araucaria Forest was used as reference pattern for the flora of Paraná. The Araucaria Municipal Park is located in Guarapuava-PR and comprises an area of 41 ha of Mixed Ombrophylous Forest. In this area, 32 10 x 10m plots were installed and 447 individuals with diameter of breast height (DBH) equal or above to 4.8 cm were measured, or an average of 1397 individuals per hectare. Forest horizontal structure is characterized by five species - Araucaria angustifolia (Bertol.) Kuntze, Campomanesia xanthocarpa (Mart.) O. Berg, Casearia decandra Jac, Capsicodendron dinisii (Schwacke) Occhioni and Allophylus edulis (A. St. - Hil.) Radlk. ex Warm., which added together 64.85 % of the VI total, 74.36 % of the cover value, 87.63 % of dominance and 61.07 % of sampled individuals. Three height strata were defined - inferior stratum - up to 5.99 m, medium stratum - between 6 and 10.99 m and superior stratum - higher than 11 m. The diameters of the sampled individuals ranged from 4.8 to 114.7 cm distributed in 22 diameter classes. The calculated Shannon-Weaver diversity index was 2.79 nats/individual and the Pielou index of uniformity was 0.9.
Floristic; phytosociology; Mixed Ombrophylous Forest
