Studies in the vascular flora of the southeastern United States. VIII

As part of ongoing efforts to understand, document, and conserve the flora southeastern United States, we make new combinations accord with our generic taxonomy, name a hybrid, re-recognize species relegated synonymy in recent decades, lectotypify generally clarify nomenclatural issues several genera, taxonomy distributions species, report important current distribution records. In Doellingeria (Asteraceae), D. sericocarpoides umbellata region. Trilisa summarize present key taxa genus. Species delimitation Stillingia (Euphorbiaceae) has been controversial unsettled region, examine confused nomenclature genus re-recognizing used by J.K. Small, but an expanded circumscription clarification various issues. We typification Desmodium dillenii (Fabaceae) its application modern understanding taxa, recommending it be considered junior synonym glabellum. Juncus, assign lectotype for Juncus anthelatus, fixing application. Primulaceae, discuss delineation genera Lysimachieae, take middle path regarding lumping/splitting, supporting recognition traditional monophyletic segregates Trientalis, Steironema, Anagallis, Centunculus, while treating Lysimachia moderately broad sense, including Glaux multiple subclades; order implement this states, single combination Steironema. also Selaginellaceae, argue at rank six major clades, monophyletic, ancient, morphologically recognizable; apply five Bryodesma, Gymnogynum, Stachygynandrum. Finally, records locally, regionally, or globally rare North Carolina: Helanthium tenellum, Chenopodium berlandieri var. macrocalycium, Carex barrattii, vestita, Eleocharis compressa compressa, Rhynchospora sulcata, Croton michauxii.