Technical Abstract: Lowbush blueberry is a wild, but cultivated for profit, agricultural system grown primarily along the northeastern regions of North America. Adjacent plants, grown under optimized growth conditions, can show dramatic yield variation. Previously, both self-fertility rates and combining abilities have been concretely shown to be involved. However, in addition, it has been suggested that a functional gender specialization may be occurring in this hermaphroditic species in which some clones effectively function as bearers (high ovule production but little or non-viable pollen) or as pollen donors (low ovule number with high quantities of viable pollen). This study examines the possibility of this occurring in 56 randomly chosen clones from the Blueberry Research Farm in Maine. For each of these clones, the mean number of ovules per flower (OPF), mean tetrads per flower (TPF), proportion viable pollen (PVP) and mean viable microspores per flower (VMPF) was counted. Non-parametric correlation analysis revealed no significant correlations between any combinations of these four fertility parameters. Thus, no evidence was found of a functional gender specialization in this hermaphroditic species or that such could be an additional factor accounting for yield variation. Results are contextualized in the extant theory of the selection pressures presumably required to elicit a functional gender specialization over time and in terms of key differences between the studies, especially our choice to count ovules rather than mature seed as the female fertility component.