Survivorship and allocation to seed and ramets of sexual and apomictic Antennaria parlinii were studied to determine whether these forms differed in colonizing and competitive ability. Apomictic plants produced more seeds per inflorescence, but their mean mass per seed was lower compared to sexual plants. However, because sexual seedling survivorship was higher than that of apomictic seedlings, the estimated numbers of offspring recruited, when male seedlings were included, were not different. Thus the primary difference in colonizing ability between sexuals and apomicts appears to be in the potential for dispersal provided by the greater number of lighter seeds produced by apomictic plants. The pattern of allocation to ramet production, one indication of potential competitive ability, was different among males, females, and apomicts. In general, both mean length of a stolon and total stolon length per plant were lower in apomicts than in males and females. Apomicts also had the highest frequency of ramet mortality, while males had the lowest. This pattern of ramet production in sexuals results in a growth form of a solid mat of long—lived, wandering stolons. Males consistently had the lowest mortality and also the highest total allocation to ramet production. Although all of an apomict's offspring bear the costs of maternity, the sons of a sexual female do not. Therefore, sexuality may be advantageous in competitive environments because of the higher adult survivorship and increased opportunity for future reproduction in those offspring that can reproduce as males.