# Title of Dataset: Mycorrhizae influence plant vegetative and floral traits and intraspecific trait variation --- Brief summary of dataset contents, contextualized in experimental procedures and results. Methods. In an experimental greenhouse study, we inoculated seven species of wildflowers with six species of AMF in a factorial design. We assessed how AMF-forb combinations influenced plant survival, vegetative biomass and floral traits, and whether AMF effects on floral traits were similar in magnitude and direction to effects on vegetative biomass. For one forb species, we investigated intraspecific plant trait variation within and across AMF treatments. Key results. AMF species varied in their effects on host plants, from negative to positive effects. AMF often had inconsistent effects on vegetative biomass versus floral traits, and therefore quantifying one or the other may provide a misleading representation of potential AMF effects. AMF treatments generated key variation in plant traits, especially floral traits, with potential consequences for plant-pollinator interactions. Given increased intraspecific trait variation in Linum lewisii plants across AMF species compared to uninoculated individuals or single AMF treatments, local AMF diversity and their host plant associations may scale up to influence community-wide patterns of trait variation and species interactions. ## Description of the Data and file structure plant.species = one of six plant species used in the experiment rep = replicate myc.treatment = one of 7 arbuscular mycorrhizal fungi (AMF) treatments (6 AMF species treatments and one control treatment) died? = the plant died during the experiment: yes or no date.first.bud = the julian day on which we observed the first bud produced by the plant date.first.flower = the julian day on which we observed the first flower produced by the plant flowered? = did the plant flower: yes or no height(cm) = the tallest height of the plant during the course of the experiment mean flower area = average petal area of the flower or inflorescence (of up to three flowers per plant) flower.number = the number of flowers produced by the plant Plant.mass(g) = the vegetative biomass of the plant flower.mass(g) = the mass of the flowering parts of the plant aboveground.mass(g) = the mass of the vegetative + flowering parts of the plant N/A represents instances where no data were collected