High-Levels of Outcrossing in Populations of Banksia spinulosa R.Br. and Banksia paludosa Smith

Abstract

Rates of outcrossing were measured for two species of Banksia at Barren Grounds Nature Reserve, near Robertson, N.S.W. For B. spinulosa in a woodland area, both single-locus and multi-locus estimates of outcrossing approached the levels predicted for panmixia. A single-locus estimate for B. paludosa cohabiting the same site and a nearby heathland site gave similarly high estimates of outcrossing.