Comparative sequence data for the chloroplast encoded rbcL gene has be
en obtained for species representing the basal lineages in the propose
d phylogeny of Powell et al. (Annals of Botany 77: 305-315, 1996), wit
h the aim of testing the delimitation of the family and the validity o
f the supra-generic taxa proposed, and estimating relationships within
the family. Cladistic analyses indicate that Epacridaceae sensu Powel
l et al. (1996) is not monophyletic. Lebetanthus, a monotypic genus fr
om South America commonly placed within the family, mostly near the Ta
smanian endemic Prionotes. is shown to be closer to Gaultheria ia and
other members of the ericaceous tribe Andromedeae. The hypothetical ph
ylogeny of Powell et al. (1996) is evaluated in the light of this prel
iminary analysis of relationships within the Family. The data do not s
upport the recognition of the two subfamilies, Richeoideae and Epacrid
oideae, of Watson (New Phytologist 66: 495-504, 1967). (C) 1996 Annals
of Botany Company