Boletín de la Sociedad Argentina de Botánica, 1970
En Caspalá, se cultivan maíces criollos tradicionales y maíces de incorporación más reciente. La ... more En Caspalá, se cultivan maíces criollos tradicionales y maíces de incorporación más reciente. La riqueza actual es producto del uso, valoración y manejo de este recurso. Dicha valoración está, a su vez, asociada a las decisiones familiares que reflejan su cultura, tradición y cosmovisión. En este trabajo se analiza la riqueza de maíces cultivados actualmente en Caspalá, los cambios ocurridos en los últimos años, el uso de lo producido y el manejo del espacio agrícola disponible. Se realizaron entrevistas semiestructuradas a 37 (51%) familias de la comunidad. Se reportaron 23 etnotaxa (15 cultivados actualmente y 8 recordados), con un promedio de 6,61 etnotaxa sembrados por familia. Se identificaron como factores que influyen de modo positivo la riqueza de este cultivo los usos asignados a cada etnotaxón, el cultivo en diferentes microambientes y la procedencia de las “semillas”. Asimismo se halló que el abandono de la actividad trashumante, la disminución de la actividad agrícola en...
Abstract We describe a new species of Bastardiopsis , Bastardiopsis palaeodensiflora sp. nov., wh... more Abstract We describe a new species of Bastardiopsis , Bastardiopsis palaeodensiflora sp. nov., which is the first fossil Malvaceae wood reported in Argentina. It was collected from the Arroyo Yuqueri of El Palmar Formation, a late Quaternary fluvial unit, located in the middle Uruguay River Basin, NE Argentina. The diagnostic features of this fossil wood are growth ring boundaries demarcated by marginal parenchyma; diffuse porous wood; vessels solitary and in radial multiples of 2–3 elements; alternate and minute-to-small sized intervessel pits; tyloses abundant; vessel-ray parenchyma pits similar in size and shape to intervessel pits; vasicentric, and diffuse axial parenchyma; rays of two distinct sizes, mostly 4–5 cells wide; prismatic crystals in upright and/or square marginal cells, sheath cells, non-septate fibres, rays and vessel elements irregularly storied. These features suggest an assignation to Bastardiopsis (K. Schumann) Hassler, a genus with five extant species, extending from the north of South America to northern Argentina, mainly distributed in tropical to temperate areas. The eco-anatomical features, the Nearest Living Relatives (NLRs), the Vulnerability Index, the Mesomorphy ratios and the Taxon Independent Approach (TIA) indicate that this fossil grew under temperate-warm and humid conditions. This is consistent with other proxies (geological, sedimentological and microfossil data) suggesting a similar environment for this region during some periods of the Late Pleistocene.
This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 f... more This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 from the late Pleistocene of Argentina. The fossil specimens were recovered from the Colonia Ayuí and Punta Viracho fossil localities of the El Palmar Formation, located in the middle part of the Uruguay Basin, eastern Argentina. The diagnostic features are: growth ring boundaries demarcated by marginal parenchyma, medium-sized vestured intervessel pits, vessel-ray parenchyma pits similar in size and shape to intervessel pits, vasicentric to lozenge type aliform axial parenchyma, biseriate (70%) and uniseriate (30%) homocellular rays, non-septate and septate fibers, and long chains (10+) of prismatic crystals in chambered axial parenchyma cells. These features suggest a relationship with Peltophorum (Vogel) Benth. (Leguminosae: Caesalpinioideae). The vessel diameter and vessel density of the El Palmar woods are consistent with the temperate-warm, humid-semiarid climate inferred for this r...
En esta contribución se presenta el primer análisis antracológico del sitio arqueológico Cerro Fa... more En esta contribución se presenta el primer análisis antracológico del sitio arqueológico Cerro Farall (830 ± 40 años AP). El sitio es un montículo ubicado sobre un albardón en la intersección de un paleocauce con el arroyo La Palometa al sur del Parque Nacional Pre-Delta, provincia de Entre Ríos, Argentina. Las maderas carbonizadas fueron halladas concentradas en las cuadrículas 1 y 4, entre los 10 y 15 cm de profundidad en la excavación. Se analizaron 39 fragmentos de carbones con afinidad a Ocotea sp., Nectandra sp. (Lauraceae), Roupala sp. (Proteaceae), Celtis sp. (Cannabaceae), Jodina rhombifolia (Santalaceae), Anadenanthera sp., Enterolobium sp., Chloroleucon sp. (Fabaceae), Aspidosperma sp. (Apocynaceae) y Cestrum sp. (Solanaceae). Debido a que los fragmentos de carbones provienen de una estructura de combustión, se asume el uso combustible del conjunto de taxones identificados. Sin embargo, a fin de acercarnos al entendimiento de las posibles prácticas vinculadas al aprovecha...
The Chaco Region is the third biogeographic and morpho-structural territory of South America afte... more The Chaco Region is the third biogeographic and morpho-structural territory of South America after the Amazon and Cerrado savannahs. This region is one of the few areas in the world where the transition from the tropics to temperate zones does not consist of a desert but of semi-arid woodlands and savannahs. The modern biodiversity patterns of the region were severely affected by the climatic and environmental changes that occurred during the Quaternary. Remains of an extinct megamammal Neosclerocalyptus sp. (Upper Pleistocene) and charred fossil woods inside of sedimentary nodules, was recently discovered in Chaco Argentina. The aim of paper is the paleoenvironmental reconstruction of quaternary sedimentation in the western Chaco through the taxonomic identification of charred woods and siliceous microfossils analysis. Twenty-three charcoal fragments related to Anacardiaceae, Apocynaceae, Fabaceae, Rhamnaceae and Malvaceae were identified. The phytolith analysis showed that Poaceae elements were the most abundant compared to the other herbaceous and non-herbaceous elements, along with algae and sponge microfossils. Eco-anatomic features of the charcoals and the microfossil remains suggest that environment and climate conditions existed in the area during the Upper Pleistocene were similar to the current one. Finally, the results reveal the presence of natural wildfires during the Quaternary in the region.
In this article, we present the results of anthracological analysis from an archaeological site l... more In this article, we present the results of anthracological analysis from an archaeological site located in the foothills of the Argentinian northwest, which is assigned to the lower Formative period (2000 year BP). We analyzed thirty-four charcoals from different depositional events over an excavated area of 94 m 2. Most of them were assigned to Mimosoideae-Fabaceae. In general, the most represented taxonomic groups correspond to species with excellent fuel properties. Others species, represented at the carpolog-ical level and belonging to plants valuable for food and dyes, have not been identified at an anthracolog-ical level. Some wood fuel species were selected for specific functions, like human cremations, and were part of complex funerary rituals, while others were selected for high heat power in pyretic structures (earth oven). The diversity of identified taxa in the different samples indicates both the provisioning of available species and a knowledge of the different properties needed for different ends (e.g. Fabacea and Anacardiaceae). The presence of Salix in earth ovens and Allophylus clustered in small groups of charcoals on the floors evidence an environment with humid seasons, and a population that lived near a possibly permanent body of water.
Resumen En esta contribución se presenta el primer análisis antracológico del sitio arqueológico ... more Resumen En esta contribución se presenta el primer análisis antracológico del sitio arqueológico Cerro Farall (830 ± 40 años AP). El sitio es un montículo ubicado sobre un albardón en la intersección de un paleocauce con el arroyo La Palometa al sur del Parque Nacional Pre-Delta, provincia de Entre Ríos, Argentina. Las maderas carbonizadas fueron halladas concentradas en las cuadrículas 1 y 4, entre los 10 y 15 cm de profundidad en la excavación. Se analizaron 39 fragmentos de carbones con afinidad a Ocotea sp., Nectandra sp. (Lauraceae), Roupala sp. (Proteaceae), Celtis sp. (Cannabaceae), Jodina rhombifolia (Santalaceae), Anadenanthera sp., Enterolobium sp., Chloroleucon sp. (Fabaceae), Aspidosperma sp. (Apocynaceae) y Cestrum sp. (Solanaceae). Debido a que los fragmentos de carbones provienen de una estructura de combustión, se asume el uso combustible del conjunto de taxones identificados. Sin embargo, a fin de acercarnos al entendimiento de las posibles prácticas vinculadas al aprovechamiento de las plantas y el manejo de los bosques por parte de la sociedad prehispánica que habitó el sitio, se discute el uso actual de los análogos modernos y su disponibilidad en el área de estudio a partir del registro etnobotánico.
This paper analyzes new fossil wood from El Palmar Formation (late Pleistocene) recovered from th... more This paper analyzes new fossil wood from El Palmar Formation (late Pleistocene) recovered from the El Palmar National Park, central-eastern Entre Ríos province, Argentina. Two new morphospecies of Beilschmiedioxylon Dupéron-Laudoueneix and Dupéron 2005 (Lauraceae) and other of Terminalioxylon Schönfeld 1947 (Combretaceae) are described, as well as Piptadenioxylon chimeloi Suguio and Mussa 1978 (Fabaceae-Mimosoideae) is cited for the first time in Pleistocene deposits of Argentina. This species was described from the ancient alluvial Tietê River “Porto de areia of Itaquaquecetuba”, São Paulo, Brazil. Wood anatomical characters suggest an affinity with the taxa Beilschmiedia taubertiana (Schw. and Mez) Kosterm., Terminalia australis Cambess, and Parapiptadenia Brenan respectively. The relationships and comparisons with the nearest living relatives were used to infer paleogeographic, paleoclimatic and paleoecological requirements. This fossil record suggests warm and humid climatic conditions for central-eastern of Entre Ríos, and during the period comprising the development of this geological formation. The fossil wood would correspond to components of riparian mixed forests (Lauraceae and Combretaceae) and semi-arid mixed forests (Fabaceae)
First record of Cryptocaryoxylon Leisman, a Lauraceae from the El Palmar Formation (late Pleistoc... more First record of Cryptocaryoxylon Leisman, a Lauraceae from the El Palmar Formation (late Pleistocene), Entre Ríos, Argentina. This paper described the first record of Cryptocaryoxylon Leisman from the late Pleistocene of Argentina. The specimen was recovered in Paraje Salto Grande locality (Uruguay River Basin, Entre Ríos, Argentina) in fluvial sediments of the El Palmar Formation. The diagnostic features of the fossil specimen are: diffuse to semi-ring porous wood; small to medium and numerous vessels, solitary and in short radial multiples; tyloses abundant; vessels-ray parenchyma pits simple; axial parenchyma vasicentric, aliform and confluent; heterocellular rays, uniseriate and rarely biseriate, high; non-septate fibres with thick-walled, and numerous “oil cells” in rays. These anatomical characteristics suggest a relationship with Cryptocarya (Lauraceae). The eco-anatomical characteristics are consistent with a temperate-warm and humid climate during this time interval.
In
the Yungas region of the Salta province, Argentina, interest in the use of plant dyes has revi... more In the Yungas region of the Salta province, Argentina, interest in the use of plant dyes has revived due to new market demands and the growth of rural tourism. In this study we compare the use of dyeing plants recorded between 1994 and 2000 with those used in 2007 and 2008. We also address factors currently involved in the acquisition and transmission of knowledge. We worked with 39 randomly chosen participants (of which 11 were artisans) in the first stage, and 32 artisans in the second stage. Information was gathered during semi–structured interviews and structured questionnaires. Eleven and 57 dye plant species, and 10 and 2 mordants, were registered in the first and second stage, respectively. The use of soft plant parts has increased, relative to the employment of roots and barks. Pastels predominate among the colors obtained. Mothers are the main transmitters of this knowledge; however, new mechanisms of knowledge acquisition and transfer are gaining importance. These results provide an alternative for the diversification and quality of existing crafts.
This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 f... more This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 from the late Pleistocene of Argentina. The fossil specimens were recovered from the Colonia Ayuí and Punta Viracho fossil localities of the El Palmar Formation, located in the middle part of the Uruguay Basin, eastern Argentina. The diagnostic features are: growth ring boundaries demarcated by marginal parenchyma, medium-sized vestured intervessel pits, vessel-ray parenchyma pits similar in size and shape to intervessel pits, vasicentric to lozenge type aliform axial parenchyma, biseriate (70%) and uniseriate (30%) homocellular rays, non-septate and septate fibers, and long chains (10+) of prismatic crystals in chambered axial parenchyma cells. These features suggest a relationship with Peltophorum (Vogel) Benth. (Leguminosae: Caesalpinioideae). The vessel diameter and vessel density of the El Palmar woods are consistent with the temperate-warm, humid-semiarid climate inferred for this region during the late Pleistocene.
Boletín de la Sociedad Argentina de Botánica, 1970
En Caspalá, se cultivan maíces criollos tradicionales y maíces de incorporación más reciente. La ... more En Caspalá, se cultivan maíces criollos tradicionales y maíces de incorporación más reciente. La riqueza actual es producto del uso, valoración y manejo de este recurso. Dicha valoración está, a su vez, asociada a las decisiones familiares que reflejan su cultura, tradición y cosmovisión. En este trabajo se analiza la riqueza de maíces cultivados actualmente en Caspalá, los cambios ocurridos en los últimos años, el uso de lo producido y el manejo del espacio agrícola disponible. Se realizaron entrevistas semiestructuradas a 37 (51%) familias de la comunidad. Se reportaron 23 etnotaxa (15 cultivados actualmente y 8 recordados), con un promedio de 6,61 etnotaxa sembrados por familia. Se identificaron como factores que influyen de modo positivo la riqueza de este cultivo los usos asignados a cada etnotaxón, el cultivo en diferentes microambientes y la procedencia de las “semillas”. Asimismo se halló que el abandono de la actividad trashumante, la disminución de la actividad agrícola en...
Abstract We describe a new species of Bastardiopsis , Bastardiopsis palaeodensiflora sp. nov., wh... more Abstract We describe a new species of Bastardiopsis , Bastardiopsis palaeodensiflora sp. nov., which is the first fossil Malvaceae wood reported in Argentina. It was collected from the Arroyo Yuqueri of El Palmar Formation, a late Quaternary fluvial unit, located in the middle Uruguay River Basin, NE Argentina. The diagnostic features of this fossil wood are growth ring boundaries demarcated by marginal parenchyma; diffuse porous wood; vessels solitary and in radial multiples of 2–3 elements; alternate and minute-to-small sized intervessel pits; tyloses abundant; vessel-ray parenchyma pits similar in size and shape to intervessel pits; vasicentric, and diffuse axial parenchyma; rays of two distinct sizes, mostly 4–5 cells wide; prismatic crystals in upright and/or square marginal cells, sheath cells, non-septate fibres, rays and vessel elements irregularly storied. These features suggest an assignation to Bastardiopsis (K. Schumann) Hassler, a genus with five extant species, extending from the north of South America to northern Argentina, mainly distributed in tropical to temperate areas. The eco-anatomical features, the Nearest Living Relatives (NLRs), the Vulnerability Index, the Mesomorphy ratios and the Taxon Independent Approach (TIA) indicate that this fossil grew under temperate-warm and humid conditions. This is consistent with other proxies (geological, sedimentological and microfossil data) suggesting a similar environment for this region during some periods of the Late Pleistocene.
This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 f... more This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 from the late Pleistocene of Argentina. The fossil specimens were recovered from the Colonia Ayuí and Punta Viracho fossil localities of the El Palmar Formation, located in the middle part of the Uruguay Basin, eastern Argentina. The diagnostic features are: growth ring boundaries demarcated by marginal parenchyma, medium-sized vestured intervessel pits, vessel-ray parenchyma pits similar in size and shape to intervessel pits, vasicentric to lozenge type aliform axial parenchyma, biseriate (70%) and uniseriate (30%) homocellular rays, non-septate and septate fibers, and long chains (10+) of prismatic crystals in chambered axial parenchyma cells. These features suggest a relationship with Peltophorum (Vogel) Benth. (Leguminosae: Caesalpinioideae). The vessel diameter and vessel density of the El Palmar woods are consistent with the temperate-warm, humid-semiarid climate inferred for this r...
En esta contribución se presenta el primer análisis antracológico del sitio arqueológico Cerro Fa... more En esta contribución se presenta el primer análisis antracológico del sitio arqueológico Cerro Farall (830 ± 40 años AP). El sitio es un montículo ubicado sobre un albardón en la intersección de un paleocauce con el arroyo La Palometa al sur del Parque Nacional Pre-Delta, provincia de Entre Ríos, Argentina. Las maderas carbonizadas fueron halladas concentradas en las cuadrículas 1 y 4, entre los 10 y 15 cm de profundidad en la excavación. Se analizaron 39 fragmentos de carbones con afinidad a Ocotea sp., Nectandra sp. (Lauraceae), Roupala sp. (Proteaceae), Celtis sp. (Cannabaceae), Jodina rhombifolia (Santalaceae), Anadenanthera sp., Enterolobium sp., Chloroleucon sp. (Fabaceae), Aspidosperma sp. (Apocynaceae) y Cestrum sp. (Solanaceae). Debido a que los fragmentos de carbones provienen de una estructura de combustión, se asume el uso combustible del conjunto de taxones identificados. Sin embargo, a fin de acercarnos al entendimiento de las posibles prácticas vinculadas al aprovecha...
The Chaco Region is the third biogeographic and morpho-structural territory of South America afte... more The Chaco Region is the third biogeographic and morpho-structural territory of South America after the Amazon and Cerrado savannahs. This region is one of the few areas in the world where the transition from the tropics to temperate zones does not consist of a desert but of semi-arid woodlands and savannahs. The modern biodiversity patterns of the region were severely affected by the climatic and environmental changes that occurred during the Quaternary. Remains of an extinct megamammal Neosclerocalyptus sp. (Upper Pleistocene) and charred fossil woods inside of sedimentary nodules, was recently discovered in Chaco Argentina. The aim of paper is the paleoenvironmental reconstruction of quaternary sedimentation in the western Chaco through the taxonomic identification of charred woods and siliceous microfossils analysis. Twenty-three charcoal fragments related to Anacardiaceae, Apocynaceae, Fabaceae, Rhamnaceae and Malvaceae were identified. The phytolith analysis showed that Poaceae elements were the most abundant compared to the other herbaceous and non-herbaceous elements, along with algae and sponge microfossils. Eco-anatomic features of the charcoals and the microfossil remains suggest that environment and climate conditions existed in the area during the Upper Pleistocene were similar to the current one. Finally, the results reveal the presence of natural wildfires during the Quaternary in the region.
In this article, we present the results of anthracological analysis from an archaeological site l... more In this article, we present the results of anthracological analysis from an archaeological site located in the foothills of the Argentinian northwest, which is assigned to the lower Formative period (2000 year BP). We analyzed thirty-four charcoals from different depositional events over an excavated area of 94 m 2. Most of them were assigned to Mimosoideae-Fabaceae. In general, the most represented taxonomic groups correspond to species with excellent fuel properties. Others species, represented at the carpolog-ical level and belonging to plants valuable for food and dyes, have not been identified at an anthracolog-ical level. Some wood fuel species were selected for specific functions, like human cremations, and were part of complex funerary rituals, while others were selected for high heat power in pyretic structures (earth oven). The diversity of identified taxa in the different samples indicates both the provisioning of available species and a knowledge of the different properties needed for different ends (e.g. Fabacea and Anacardiaceae). The presence of Salix in earth ovens and Allophylus clustered in small groups of charcoals on the floors evidence an environment with humid seasons, and a population that lived near a possibly permanent body of water.
Resumen En esta contribución se presenta el primer análisis antracológico del sitio arqueológico ... more Resumen En esta contribución se presenta el primer análisis antracológico del sitio arqueológico Cerro Farall (830 ± 40 años AP). El sitio es un montículo ubicado sobre un albardón en la intersección de un paleocauce con el arroyo La Palometa al sur del Parque Nacional Pre-Delta, provincia de Entre Ríos, Argentina. Las maderas carbonizadas fueron halladas concentradas en las cuadrículas 1 y 4, entre los 10 y 15 cm de profundidad en la excavación. Se analizaron 39 fragmentos de carbones con afinidad a Ocotea sp., Nectandra sp. (Lauraceae), Roupala sp. (Proteaceae), Celtis sp. (Cannabaceae), Jodina rhombifolia (Santalaceae), Anadenanthera sp., Enterolobium sp., Chloroleucon sp. (Fabaceae), Aspidosperma sp. (Apocynaceae) y Cestrum sp. (Solanaceae). Debido a que los fragmentos de carbones provienen de una estructura de combustión, se asume el uso combustible del conjunto de taxones identificados. Sin embargo, a fin de acercarnos al entendimiento de las posibles prácticas vinculadas al aprovechamiento de las plantas y el manejo de los bosques por parte de la sociedad prehispánica que habitó el sitio, se discute el uso actual de los análogos modernos y su disponibilidad en el área de estudio a partir del registro etnobotánico.
This paper analyzes new fossil wood from El Palmar Formation (late Pleistocene) recovered from th... more This paper analyzes new fossil wood from El Palmar Formation (late Pleistocene) recovered from the El Palmar National Park, central-eastern Entre Ríos province, Argentina. Two new morphospecies of Beilschmiedioxylon Dupéron-Laudoueneix and Dupéron 2005 (Lauraceae) and other of Terminalioxylon Schönfeld 1947 (Combretaceae) are described, as well as Piptadenioxylon chimeloi Suguio and Mussa 1978 (Fabaceae-Mimosoideae) is cited for the first time in Pleistocene deposits of Argentina. This species was described from the ancient alluvial Tietê River “Porto de areia of Itaquaquecetuba”, São Paulo, Brazil. Wood anatomical characters suggest an affinity with the taxa Beilschmiedia taubertiana (Schw. and Mez) Kosterm., Terminalia australis Cambess, and Parapiptadenia Brenan respectively. The relationships and comparisons with the nearest living relatives were used to infer paleogeographic, paleoclimatic and paleoecological requirements. This fossil record suggests warm and humid climatic conditions for central-eastern of Entre Ríos, and during the period comprising the development of this geological formation. The fossil wood would correspond to components of riparian mixed forests (Lauraceae and Combretaceae) and semi-arid mixed forests (Fabaceae)
First record of Cryptocaryoxylon Leisman, a Lauraceae from the El Palmar Formation (late Pleistoc... more First record of Cryptocaryoxylon Leisman, a Lauraceae from the El Palmar Formation (late Pleistocene), Entre Ríos, Argentina. This paper described the first record of Cryptocaryoxylon Leisman from the late Pleistocene of Argentina. The specimen was recovered in Paraje Salto Grande locality (Uruguay River Basin, Entre Ríos, Argentina) in fluvial sediments of the El Palmar Formation. The diagnostic features of the fossil specimen are: diffuse to semi-ring porous wood; small to medium and numerous vessels, solitary and in short radial multiples; tyloses abundant; vessels-ray parenchyma pits simple; axial parenchyma vasicentric, aliform and confluent; heterocellular rays, uniseriate and rarely biseriate, high; non-septate fibres with thick-walled, and numerous “oil cells” in rays. These anatomical characteristics suggest a relationship with Cryptocarya (Lauraceae). The eco-anatomical characteristics are consistent with a temperate-warm and humid climate during this time interval.
In
the Yungas region of the Salta province, Argentina, interest in the use of plant dyes has revi... more In the Yungas region of the Salta province, Argentina, interest in the use of plant dyes has revived due to new market demands and the growth of rural tourism. In this study we compare the use of dyeing plants recorded between 1994 and 2000 with those used in 2007 and 2008. We also address factors currently involved in the acquisition and transmission of knowledge. We worked with 39 randomly chosen participants (of which 11 were artisans) in the first stage, and 32 artisans in the second stage. Information was gathered during semi–structured interviews and structured questionnaires. Eleven and 57 dye plant species, and 10 and 2 mordants, were registered in the first and second stage, respectively. The use of soft plant parts has increased, relative to the employment of roots and barks. Pastels predominate among the colors obtained. Mothers are the main transmitters of this knowledge; however, new mechanisms of knowledge acquisition and transfer are gaining importance. These results provide an alternative for the diversification and quality of existing crafts.
This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 f... more This paper describes the first record of Peltophoroxylon (Ramanujam) Müller-Stoll et Mädel 1967 from the late Pleistocene of Argentina. The fossil specimens were recovered from the Colonia Ayuí and Punta Viracho fossil localities of the El Palmar Formation, located in the middle part of the Uruguay Basin, eastern Argentina. The diagnostic features are: growth ring boundaries demarcated by marginal parenchyma, medium-sized vestured intervessel pits, vessel-ray parenchyma pits similar in size and shape to intervessel pits, vasicentric to lozenge type aliform axial parenchyma, biseriate (70%) and uniseriate (30%) homocellular rays, non-septate and septate fibers, and long chains (10+) of prismatic crystals in chambered axial parenchyma cells. These features suggest a relationship with Peltophorum (Vogel) Benth. (Leguminosae: Caesalpinioideae). The vessel diameter and vessel density of the El Palmar woods are consistent with the temperate-warm, humid-semiarid climate inferred for this region during the late Pleistocene.
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and Dupéron 2005 (Lauraceae) and other of Terminalioxylon Schönfeld 1947 (Combretaceae) are described, as well as Piptadenioxylon
chimeloi Suguio and Mussa 1978 (Fabaceae-Mimosoideae) is cited for the first time in Pleistocene deposits of Argentina. This species was described from the ancient alluvial Tietê River “Porto de areia of Itaquaquecetuba”, São Paulo, Brazil. Wood anatomical characters suggest an affinity with the taxa Beilschmiedia taubertiana (Schw. and Mez) Kosterm., Terminalia australis Cambess, and Parapiptadenia Brenan
respectively. The relationships and comparisons with the nearest living relatives were used to infer paleogeographic, paleoclimatic and paleoecological
requirements. This fossil record suggests warm and humid climatic conditions for central-eastern of Entre Ríos, and during the
period comprising the development of this geological formation. The fossil wood would correspond to components of riparian mixed forests (Lauraceae and Combretaceae) and semi-arid mixed forests (Fabaceae)
the Yungas region of the Salta province, Argentina, interest in the use of plant dyes has revived
due to new market demands and the growth of rural tourism. In this study we compare the use
of dyeing plants recorded between 1994 and 2000 with those used in 2007 and 2008. We also
address factors currently involved in the acquisition and transmission of knowledge. We worked
with 39 randomly chosen participants (of which 11 were artisans) in the first stage, and 32
artisans in the second stage. Information was gathered during semi–structured interviews
and structured questionnaires. Eleven and 57 dye plant species, and 10 and 2 mordants,
were registered in the first and second stage, respectively. The use of soft plant parts has
increased, relative to the employment of roots and barks. Pastels predominate among the colors
obtained. Mothers are the main transmitters of this knowledge; however, new mechanisms of
knowledge acquisition and transfer are gaining importance. These results provide an alternative
for the diversification and quality of existing crafts.
and Dupéron 2005 (Lauraceae) and other of Terminalioxylon Schönfeld 1947 (Combretaceae) are described, as well as Piptadenioxylon
chimeloi Suguio and Mussa 1978 (Fabaceae-Mimosoideae) is cited for the first time in Pleistocene deposits of Argentina. This species was described from the ancient alluvial Tietê River “Porto de areia of Itaquaquecetuba”, São Paulo, Brazil. Wood anatomical characters suggest an affinity with the taxa Beilschmiedia taubertiana (Schw. and Mez) Kosterm., Terminalia australis Cambess, and Parapiptadenia Brenan
respectively. The relationships and comparisons with the nearest living relatives were used to infer paleogeographic, paleoclimatic and paleoecological
requirements. This fossil record suggests warm and humid climatic conditions for central-eastern of Entre Ríos, and during the
period comprising the development of this geological formation. The fossil wood would correspond to components of riparian mixed forests (Lauraceae and Combretaceae) and semi-arid mixed forests (Fabaceae)
the Yungas region of the Salta province, Argentina, interest in the use of plant dyes has revived
due to new market demands and the growth of rural tourism. In this study we compare the use
of dyeing plants recorded between 1994 and 2000 with those used in 2007 and 2008. We also
address factors currently involved in the acquisition and transmission of knowledge. We worked
with 39 randomly chosen participants (of which 11 were artisans) in the first stage, and 32
artisans in the second stage. Information was gathered during semi–structured interviews
and structured questionnaires. Eleven and 57 dye plant species, and 10 and 2 mordants,
were registered in the first and second stage, respectively. The use of soft plant parts has
increased, relative to the employment of roots and barks. Pastels predominate among the colors
obtained. Mothers are the main transmitters of this knowledge; however, new mechanisms of
knowledge acquisition and transfer are gaining importance. These results provide an alternative
for the diversification and quality of existing crafts.