| Noun | 1. | genus Phlox - herbaceous to shrubby evergreen or deciduous annuals or perennials, diffuse (spreading) or caespitose (tufted or matted); from Alaska and western Canada to Mexico plant genus - a genus of plants family Polemoniaceae, phlox family, Polemoniaceae - a widely distributed family of chiefly herbaceous plants of the order Polemoniales; often have showy flowers phlox - any polemoniaceous plant of the genus Phlox; chiefly North American; cultivated for their clusters of flowers chickweed phlox, Phlox bifida, Phlox stellaria, sand phlox - low mat-forming herb of rocky places in United States |