FLOWERING PHENOLOGY AND FRUIT-SET OF PETROCOPTIS-GRANDIFLORA (CARYOPHYLLACEAE)

In a study of the flowering phenology of Petrocoptis grandiflora and its possible influence on fruit set in two populations of the northwestern Iberian Peninsula, none of the flowering variables investigated-flowering intensity, duration of flowering, number of flowers, flowering order, and flowering overlap-explained the observed interplant difference in fruit set. We suggest that, for this species, fruit set depends not on the above variables but on the degree of flowering overlap in the population when pollinators are active.