Nicholas Hind, Deborah Lambkin
Summary Symphyotrichum oolentangiense (Riddell) G.L. Nesom (Compositae: Astereae: Symphyotrichinae) is described and illustrated. A very brief biographical note of John Leonard Riddell, the collector and author of the species, is offered. Notes are provided for the species' cultivation, propagation, likely pests and diseases, and availability. A full synonymy is given, along with type citations and known presence of type material, together with relevant notes. Selected illustrations of the species are cited, and statements of the species' distribution, habitat and ecology, phenology, etymology, conservation status and vernacular names provided.