The vexing literary relationship between Kurt Sprengel and Friedrich Dietrich appears to have led to some of Dietrich's work being willfully disregarded and subsequently ...forgotten/extinguished/suppressed. Examination of Dietrich's oeuvre leads to the rehabilitation of fifteen of his new combinations, making securer by up to 175 years, some names in current use for largely New World plants. To take into account Dietrich's work as a whole, four new combinations and three nomina nova are proposed with the help of authorities in the germane plant groups: Caamembeca andina (A.W. Benn.) J.F.B. Pastore & Mabb. (Bolivia), Callicarpa ekmanii I.E. Méndez & Mabb. (Cuba), Clematis wangiana Mabb., (Madagascar), Coleataenia pulchra (F. Dietr.) Mabb. & LeBlond (USA), Packera dubia (Spreng.) Trock & Mabb. (USA), Piper samainianum Mabb. (Peru), Rostellularia vahliana (Schult.) Mabb. (south Asia), for which a lectotype is designated, with other adjustments of names in Besleria (B. formosa now B. amabilis, tropical America), Oxalis (O. eckloniana now O. biloba, South Africa), Passiflora (P. arborea now P. magnoliifolia, Colombia), Ribes (R. ruizii now R. sylvestre, Chile), and possibly Tocoyena (South America), while further work on Lupinus is called for.
La irritante relación literaria entre Kurt Sprengel y Friedrich Dietrich parece haber llevado a que algunos de los trabajos de Dietrich sean ignorados y posteriormente olvidados/extinguidos/suprimidos. El estudio de la obra de Dietrich lleva a la rehabilitación de quince de sus nuevas combinaciones, haciendo más seguros por hasta 175 años, algunos nombres en uso actual para plantas en su mayoría del Nuevo Mundo. Para tener en cuenta el trabajo de Dietrich en su conjunto, se proponen cuatro nuevas combinaciones y tres nomina nova con la ayuda de las autoridades de los grupos de plantas relacionadas: Caamembeca andina (A.W. Benn.) J.F.B. Pastore & Mabb. (Bolivia), Callicarpa ekmanii I.E. Méndez & Mabb. (Cuba), Clematis wangiana Mabb., (Madagascar), Coleataenia pulchra (F. Dietr.) Mabb. & LeBlond (EE. UU.), Packera dubia (Spreng.) Trock & Mabb. (EE. UU.), Piper samainianum Mabb. (Perú), Rostellularia vahliana (Schult.) Mabb. (Asia meridional) para el cual se designa un lectotipo, con otros ajustes de nombres en Besleria (B. formosa ahora B. amabilis, América tropical), Oxalis (O. eckloniana ahora O. biloba, Sudáfrica), Passiflora (P. arborea ahora P. magnoliifolia, Colombia), Ribes (R. ruizii ahora R. sylvestre, Chile) y posiblemente Tocoyena (América del Sur), mientras que se requiere más trabajo sobre Lupinus.
Different names have been used for two eastern Asian and Alaskan species of Gaultheria in various taxonomic treatments. To resolve this problem, a lectotype for the name G. pyroloides is selected. ...The name G. miqueliana, employed in most taxonomic works for the species from Japan, Russia, and Alaska since its publication in 1918, must be relegated to synonymy under G. pyroloides. A lectotype is also selected for the Himalayan species G. pyrolifolia. Several morphological characters are identified that differentiate the two species. Se han usado diferentes nombres para dos especies, del este de Asia Alaska, de Gaultheria en varios tratamientos taxonómicos. Para resolver este problema, se ha seleccionado un lectotipo para el nombre G. pyroloides. El nombre G. miqueliana, empleado en la mayoría de los trabajos taxonómicos para la especie de Japón, Rusia, y Alaska desde su publicación in 1918, debe ser relegado a la sinonimia de G. pyroloides. Se ha seleccionado también un lectotipo para la especie del Himalaya G. pyrolifolia. Se han identificado varios caracteres morfológicos que diferencian las dos especies.
The following new combination in Packera is made: Packera musiniensis (S.L. Welsh) Trock. Se hace la siguiente nueva combinación en Packera: Packera musiniensis (S.L. Welsh) Trock.
Two new varietal combinations in Packera (Asteraceae: Senecioneae) are made based on work completed for the Flora of North America north of Mexico project. Se hacen dos nuevas combinaciones ...varietales en Packera (Asteraceae: Senecioneae) en base al trabajo completado para el proyecto Flora of North America north of Mexico.
Fourteen species of Packera are known to occur in Colorado. Recently published floras for the state have treated these species variously as Packera, Senecio and Ligularia. While preparing a treatment ...of this genus for the Flora of North America Project, the author discovered some confusion among the local botanists who rely on those floras for identifications of this difficult group. This paper presents descriptions for each of the species that occur in the state, comments on how to differentiate them in the field, and identification keys. Se conocen catorce especies de Packera en Colorado. Las floras del estado publicadas recientemente han tratado estas especies de modo diferente como Packera, Senecio y Ligularia. Mientras preparaba un tratamiento de este género para la Flora de Norte América, el autor encontró confusión entre los botánicos locales que usan estas floras para las identificaciones de este grupo difícil. Este artículo presenta descripciones de las especies que viven en el estado, comentarios sobre como diferenciarlas en el campo, y claves de identificación.
Packera (Asteraceae: Senecioneae) is a genus consisting of 64 species and 12 varieties found predominantly in North America from the Gulf of Tehuantepec in southern Mexico to the Arctic, with one ...species extending into eastern Siberia. It is a well-marked segregate of the super-genus Senecio, and in the past was treated as the “aureoid” species group of Senecio. The placement of the aureoid Senecios into the genus Packera was proposed by Askell Löve in 1972, and at that time he placed several species into the genus. Several subsequent publications have provided nomenclatural changes transferring additional species to Packera. Although some “senecionologists” initially resisted the idea of segregating the aureoids into a separate genus, the idea has begun to be accepted, and many papers have been published using the new genus name. What has been sorely lacking is a comprehensive revisionary treatment and subsequent monographic work. The intent of this dissertation is to provide the initial revisionary work on which a more detailed monographic treatment can be based. The first portion of the dissertation includes a brief taxonomic history of both the Tribe Senecioneae and of the genus Packera and a description of the genus including morphological, cytological, palynological, chemical and molecular characters. The second part of the dissertation includes taxonomic treatments of each species and of the varieties including species descriptions, distribution maps, and comments regarding both what is known and what is still unknown about the relationships between the species. Within the treatments are included extensive lists of the specimens that were examined for this research and a list of synonyms and type specimens applicable to each species. The final portion of the dissertation is a dichotomous key that is designed to aid the user in the recognition of species. This work was designed to provide a much needed comprehensive revision of a difficult genus, and serves as preparation for a treatment of the genus that will be provided for the Flora of North America project. It will undoubtedly raise a number of questions and will hopefully stimulate some debate concerning the evolutionary relationships between these species.
Packera texensis, sp. nov, is described and illustrated. It is endemic to the granitic sands of the Central Mineral Region within the Edwards Plateau of central Texas where it is known from four ...counties. Se describe y se ilustra Packera texensis, sp. nov. Es endémica de las arenas graníticas de la "Central Mineral Region" en la Meseta Edwards del centro de Texas, de donde se conoce en cuatro condados.
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