The following variables were used in the investigation: topography (altitude, aspect, and slope), distance from the littoral, climate, and geographical variables (latitude and longitude). Of the models evaluated, the GWR proved to be the most successful. This model revealed a marked east-west gradient in the distribution of S. kolbei and a relationship with altitude.

We report new records of Corynabutilon ochsenii (Phil.) Kearn ey populations in areas affected by forest fires 12 years ago at the Malleco National Forest Reserve in southern Chile. One of the populations is found at 1350 m a.s.l., which is the highest altitude ever reported for this species. C. ochsenii is part of the species that are reestablishing after the fire.