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September 2022
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58 Reads
Novon A Journal for Botanical Nomenclature
The lectotype of Gnaphalium viravira Feuillée ex Molina [≡ Pseudognaphalium viravira (Feuillée ex Molina) Anderb.] is designated here based on the original illustration of the species, which has gone unnoticed for 240 years. In addition, an epitype for this name is proposed.
June 2022
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41 Reads
Annals of the Missouri Botanical Garden
The genus Alternanthera Forssk. (Amaranthaceae) is widely distributed throughout tropical and subtropical areas of the Americas. It includes herbs or suffrutices with opposite leaves, perfect flowers protected by a bract and two bracteoles, with capitate stigma and appendages in the staminal tube (or pseudostaminodes) arranged alternately with the stamen filaments, which bear functionally unilocular anthers. Here, a taxonomic revision of the 31 species of Alternanthera that inhabit the Southern Cone and Bolivia is presented. The name A. piptantha Pedersen is synonymized with A. altacruzensis Suess. Type species are designated for genera Brandesia Mart., Bucholzia Mart., Mogiphanes Mart., Steiremis Raf., and Telanthera R. Br. In addition, lectotypes are designated for Achyranthes porrigens Jacq., Alternanthera mexicana (Schltdl.) Hieron. var. gracilis Suess., A. nodiflora R. Br. var. linearifolia Moq., A. tenella Moq., Gomphrena elongata Willd. ex Roem. & Schult., T. meyeriana Regel & Körn, T. rufa (Mart.) Moq. var. glabrata Seub., and a second-step lectotype for A. denticulata R. Br. Identification keys are included for the differentiation of species, subspecies, and varieties, as well as their morphological descriptions, geographic distribution, habitat, vernacular names, uses, illustrations, nomenclatural notes, and information about the studied specimens.
June 2022
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20 Reads
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1 Citation
Taxon
October 2021
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243 Reads
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1 Citation
Biota Colombiana
Gamochaeta cabrerae, G. simplicicaulis y G. subfalcata se citan por primera vez en Ecuador y se confirma la presencia de G. humilis. Estos nuevos registros se suman a las cuatro especies del género conocidas hasta el momento para el país, i.e., G. americana, G. pensylvanica, G. purpurea y G. sphacelata. Para cada uno de los nuevos registros se aporta una descripción, ilustración y mapa de distribución. Además, se incluye una clave del género en Ecuador.
May 2020
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34 Reads
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1 Citation
Novon A Journal for Botanical Nomenclature
Lectotypes are designated for 10 names pertaining to species of Alternanthera Forssk. from Bolivia and the Southern Cone of South America (Argentina, Southern Brazil, Chile, Paraguay, and Uruguay): Achyranthes capituliflora Bertero, Achyranthes halimifolia Lam., Alternanthera coriacea Herzog, Alternanthera flavescens Kunth, Alternanthera gomphrenoides Kunth, Alternanthera paniculata Kunth, Telanthera crucis Moq., T. densiflora Moq., T. floridana Chapm., and T. manillensis Walp.
December 2018
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496 Reads
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1 Citation
Lilloa
Se presenta un estudio micromor fológico de las especies de la subserie Polyphylli del género Senecio. Se analizaron caracteres vegetativos (tricomas foliares) y reproductivos (tricomas de los filarios y aquenios; vena media de los dientes de la corola tubulosa; collares, bases y apéndices conectivales de las anteras; polen; ramas del estilo, aquenios). Se presenta una clave basada en microcaracteres para diferenciar a las especies de la subserie.
September 2018
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71 Reads
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1 Citation
Boletin de la Sociedad Argentina de Botanica
p>Se designan lectotipos para 36 nombres específicos y 22 nombres infraespecíficos correspondientes a la familia Amaranthaceae de la Flora Argentina, los que pertenecen a los géneros actualmente aceptados Alternanthera, Blutaparon, Chamissoa, Froelichia, Hebanthe y Pfaffia. Del total, 20 corresponden a lectotipificaciones de segundo paso.</p
July 2018
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197 Reads
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1 Citation
Boletin de la Sociedad Argentina de Botanica
This paper records for the first time the presence in the Argentine flora of Senecio farinifer Hook. & Arn. and S. madariagae Phil. (Asteraceae-Senecioneae). A description, including vegetative and reproductive microcharacters, is provided.
June 2018
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43 Reads
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1 Citation
Boletin de la Sociedad Argentina de Botanica
November 2017
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28 Reads
Novon A Journal for Botanical Nomenclature
Senecio L. subsect. Radiati Cabrera, an illegitimate name, is replaced with the name Senecio subser. Polyphylli Giuliano, M. P. Hernández & S. E. Freire, nom. nov.; the epithet of the replacement name refers to the type species of this subsection, S. polyphyllus Kunze ex DC. The epithet Radiati was previously published by Bentham to designate a series of Senecio.
... Most of the Chilean plants described by Giovanni Ignazio Molina in his work Saggio sulla Storia Naturale del Chili (1782Chili ( , 1810 are ambiguous and lack original material for their typification (Thulin et al., 2021). For these reasons, in some cases, these names have been proposed for rejection (Eggli & Walter, 2012;Hershkovitz, 2020;Jocou & Zanotti, 2022;Zanotti & Giuliano, 2022). However, these brief and vague descriptions are generally followed by observations on habits, vernacular names, and uses of the plants, which, in many cases, have allowed their identification (Johnston, 1924). ...
June 2022
Taxon
... Colectada únicamente en febrero de 1983, un año ENSO positivo. El rango de distribución de esta especie va desde el sur de EUA hasta Sudamérica, con reportes últimamente en Chile y Ecuador, abarcando una gran cantidad de ecosistemas desde 150 hasta 4,100 m snm (Freire et al., 2016(Freire et al., , 2022, por lo que su presencia en Perú, no sería inusual. ...
October 2021
Biota Colombiana
... La Argentina y Chile se destacan dentro del Cono Sur por ser los países que comparten el mayor número de especies de plantas vasculares en forma exclusiva (Zuloaga et al., 2019); esta tendencia se observa en las Caryophyllaceae debido a que 16 especies poseen una distribución geográfica acotada a los países en cuestión (Documenta Florae Australis, 2022). A este respecto cabe enfatizar que, de un tiempo a esta parte, la exploración botánica de la Argentina y Chile ha ampliado significativamente el conocimiento de la flora que contienen; esto se refleja en novedades taxonómicas que ampliaron el área de distribución geográfica de géneros y especies que se creían endémicos/as de un país en particular (e.g., Domínguez & Elvebakk, 2002;Kiesling, 2002;García, 2007;Martínez Carretero, 2011;Urrutia & Bravo-Monasterio, 2016;Hernández et al., 2018;Teillier et al., 2020). ...
June 2018
Boletin de la Sociedad Argentina de Botanica
... Mapa del área propuesta Campo del ArenalAltitud: La altitud máxima del área propuesta está al oeste, en la Sierra de las Geomorfología e hidrología: El centro y sur de Catamarca está ocupado por las Sierras Pampeanas, representadas por dos largas y altas cadenas montañosas de dirección norte -sur entre las que se encuentran hondos valles longitudinales y bolsones o "campos", que suelen contener salinas y/o formaciones medanosas. Las Sierras Pampeanas constituyen, en la provincia, la región geológica de mayor importancia, tanto por su extensión como por su influencia ambiental(Freire et al. 2011). El área propuesta se encuentra ubicada en el más septentrional de esos bolsones o "campos", una gran depresión tectónica denominada Campo del Arenal o de Los Pozuelos. ...
June 2011
Boletin de la Sociedad Argentina de Botanica
... While floristic inventories are available (Nesom 1990;Giuliano 2001;Müller 2006;Heiden 2009;Giuliano and Freire 2011;Heiden et al. 2012), there was no infrageneric classification of the Brazilian species, with the exception of Heiden (2009), which is restricted to the 55 species of Rio de Janeiro State and recognized four subgenera and 15 sections. However, Heiden andPirani (2016a, 2016b) recently presented novel features for the infrageneric classification, based on a broad phylogenetic study encompassing seven subgenera and 45 sections, which still needs to be tested from a morpho-anatomical point of view to identify new potential synapomorphies of the main clades. ...
January 2011
Annals of the Missouri Botanical Garden
... Bayón & Freire (Fig. 1), a species native to Central and South Chile and to West Argentina, where it grows in mossy places and river margins, from sea level to 3700 m (Freire et al., 2014a). This species was kept in Gnaphalium by Anderberg (1991) as Gnaphalium aldunateoides J. Rémy, but it was recently transferred to Pseudognaphalium by Monti et al. (2013), who argued that it has a fenestrated stereome, which is the primary morphological character that differentiates both genera. Although Monti et al. (2013) highlighted that some characters, such as a slightly dimorphic pappus, did not match the typical features of Pseudognaphalium, this was not considered sufficient evidence to keep the species in Gnaphalium. ...
August 2013
Journal of the Botanical Research Institute of Texas
... Baccharis Linnaeus (1753: 860), with more than 440 species, ranks among the most species rich genera in the Compositae and is the largest in the Astereae (Fielding 2001, Giuliano 2001, Müller 2006, Giuliano & Freire 2011, Heiden et al. 2019, Heiden 2020, Heiden & Bonifacino 2021. It is endemic to the Americas, extending from southeastern Canada to the southern extreme end of Argentina and Chile (Fielding 2001, Müller 2006, Heiden & Bonifacino 2021. ...
September 2011
Annals of the Missouri Botanical Garden
... Pseudognaphalium is a large genus being part of the tribe Gnaphalieae (Asteraceae) with about 90 to 95 % annual, biannual or perennial species distributed in America. It is also present in less quantity in Asia and Africa [1,2]. Previous studies about Pseudognaphalium genus reported the presence of flavonoids and their glycosylated derivatives, diterpenoids and sterols [3][4][5][6][7][8][9]. ...
June 2014
Gayana Botánica
... Among the taxonomic studies involving the Senecioneae tribe, Cabrera's (1974Cabrera's ( , 1978Cabrera's ( , 2000 for Argentina stands out, where the author points out the occurrence of approximately 12 indigenous genera for the country, highlighting Senecio, which is widespread with around 270 species. Another important study, both from a floristic and taxonomic point of view, is that by Barkley (1975) for the flora of Panama. ...
January 2000
... Endémica de la Argentina: Tucumán, Catamarca, La Rioja, San Luis, Córdoba (Cabrera et al., 1999;Freire et al., 2005;Volkmann, 2013;Gutiérrez, 2015). Florece en primavera. ...
January 2005
![Figura 1. Gamochaeta cabrerae.A, hábito; B, hoja; C, capítulo; D, filario externo; E, filario interno; F, flor del margen; G, flor del centro; H, ramas del estilo de la flor del centro [A-H: Dillon & Sagástegui, 1991, sub G. oreophila Dillon & Sagást.]. Figure 1. Gamochaeta cabrerae.A, habit; B, leaf; C, capitulum; D, outer phyllary; E, inner phyllary; F, marginal floret; G, central floret; H, style branches of a central floret [A-H: Dillon & Sagástegui, 1991, sub G. oreophila Dillon & Sagást.].](https://www.researchgate.net/profile/Susana-Freire-2/publication/355413770/figure/fig8/AS:11431281110865455@1672772023883/Figura-1-Gamochaeta-cabreraeA-habito-B-hoja-C-capitulo-D-filario-externo-E_Q320.jpg)
![Figura 3. Gamochaeta humilis.A, hábito; B, hoja; C, capítulo; D, filarios; E, flor del centro; F, flor del margen; G, aquenio con tricomas cortos y globosos; H, detalle de la base del vilano, mostrando los pelos unidos en la base [A-H: Freire et al., 2016].](https://www.researchgate.net/profile/Susana-Freire-2/publication/355413770/figure/fig2/AS:1111237777731584@1641951140662/Figura-3-Gamochaeta-humilisA-habito-B-hoja-C-capitulo-D-filarios-E-flor-del_Q320.jpg)
![Figure 5. Gamochaeta simplicicaulis. A, habit; B, capitulum; C-E, phyllaries; F, marginal floret; G, central floret; H, stamen; I, style branches of central floret; J, achene with short globose trichomes [A-J: Cabrera, 1963].](https://www.researchgate.net/profile/Susana-Freire-2/publication/355413770/figure/fig4/AS:1111237777727494@1641951140753/Gamochaeta-simplicicaulis-A-habit-B-capitulum-C-E-phyllaries-F-marginal-floret_Q320.jpg)
