Asteraceae/Compositae (Aster/Composit Family) Scientific Name Synonym(s): Silphium confertifolium Small, Silphium glabrum Eggert ex Small, Silphium trifoliatum var. latifolium A. Gray, Silphium asteriscus ssp. latifolium Weber & T.R. Fisher. Common Name Synonym(s): Starry Rosinweed Base Flower Color: YellowReproductive Phenology: Jun, Jul, AugNotes: Notice the smooth stem and leaves lacking hairs (Glabrous). For more information about this