Studies in the vascular flora of the southeastern United States. VIII
DOI:
https://doi.org/10.17348/jbrit.v16.i2.1257Resumen
Como parte de los esfuerzos en curso para comprender, documentar y conservar la flora del sureste de los Estados Unidos, hacemos nuevas combinaciones acordes con nuestra propuesta taxonóomica, nombramos un nuevo híbrido, reconocemos una especie relegada a la sinonimia en las últimas décadas, lectotipificamos y, en general, aclaramos cuestiones nomenclaturales en varios géneros, la taxonomía y la distribución de las especies, e informamos importantes registros de distribución nuevos y actuales. En Doellingeria (Asteraceae), aclaramos la taxonomía y distribución de D. sericocarpoides y D. umbellata en la región. En Trilisa, resumimos y aclaramos la taxonomía del género Trilisa (Asteraceae), nombramos un nuevo híbrido en el género y presentamos una nueva clave para los taxones que incluye. La delimitación de especies en Stillingia (Euphorbiaceae) ha sido controvertida e inestable en la región, y examinamos la confusa taxonomía y nomenclatura del género Stillingia (Euphorbiaceae) en el sureste de los Estados Unidos, reconociendo una especie utilizada por J.K. Small, pero con una circunscripción ampliada y una aclaración de varios problemas nomenclaturales. Examinamos la tipificación de Desmodium dillenii (Fabaceae) y su aplicación asegun nuestra comprensión moderna de la circunscripción de taxones, recomendando que se considere un sinónimo menor de Desmodium glabellum. En Juncus, seleccionamos un lectotipo para Juncus anthelatus, fijando su aplicación. En Primulaceae, discutimos la delineación de géneros en Lysimachieae, y tomamos un camino intermedio con respecto a la agrupación / división, apoyando el reconocimiento de segregaciones tradicionales y monofiléticas Trientalis, Steironema, Anagallis, Centunculus, mientras tratamos Lysimachia en un sentido moderadamente amplio, incluyendo Glaux y múltiples subclados. Para implementar esta taxonomía en el sureste de los Estados Unidos, hacemos una sola combinación nueva en Steironema. También discutimos la circunscripción genérica en Selaginellaceae, y argumentamos a favor del reconocimiento en el rango de género de seis clados principales, monofiléticos, antiguos y morfológicamente reconocibles; para aplicar esta taxonomía: En el sureste de los Estados Unidos, hacemos cinco nuevas combinaciones en Bryodesma, Gymnogynum y Stachygynandrum. Finalmente, reportamos nuevos registros importantes de especies raras a nivel local, regional o global en Carolina del Norte: Helanthium tenellum, Chenopodium berlandieri var. macrocalycium, Carex barrattii, Carex vestita, Eleocharis compressa var. compressa, Rhynchospora compressa, Rhynchospora sulcata y Croton willdenowii.
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