Anatomía de Madera en 31 Especies de la Subfamilia Mimosoideae (Leguminosae) en Venezuela

León, J H Williams

doi:10.14483/udistrital.jour.colomb.for.2008.1.a08

Cited by 16 publications

(11 citation statements)

References 7 publications

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“…the fossil lacks rays >1 mm, a feature common in the family but not present in Calycophyllum (Inside-Wood 2004-onwards). Most features of the fossil are within the range of variability of Calycophyllum; perforated ray cells have been noted for C. candidissimum and other species in the genus (Chalk & Chattaway 1933;León 2011;Baldin et al 2016). Similar taxa in Salicaceae (Casearia) and Phyllanthaceae (Cleistanthus) generally have rays >1 mm (InsideWood 2004-onwards).…”

Section: Muntingiaceaementioning

confidence: 66%

The Piedra Chamana fossil woods (Eocene, Peru), II

Woodcock

Meyer

Prado

2019

IAWA J.

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This contribution presents descriptions of 14 fossil woods from the Piedra Chamana Fossil Forest in Peru, an assemblage of fossil woods and leaves dated at 39 Ma (late Middle Eocene). It is part two of the descriptions of the non-monocot angiosperm fossils from the site (see Woodcock et al. 2017). The woods are assigned to the subfamilies Bombacoideae, Bombacoideae/Malvoideae, Byttneroideae, Grewioideae, and Sterculioideae of Malvaceae and the families Melastomataceae, Muntingiaceae, Rubiaceae, Rutaceae, and Sapindaceae. Malvalean taxa make up around one-third of the wood types. Many of the woods are identifiable to modern-day genera or groups, including genera with species counted among the hyperdominant trees of the New World forests. Represented vegetation types include mixed freshwater swamp with Avicennia, seasonally flooded forest, and lowland tropical forest with a dry aspect. The assemblage shows floristic similarities to extant South American lowland tropical forest, particularly the seasonally flooded forests growing along white water rivers (várzea); however, the dry forest association has a less clear analog in the present-day tropics.

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Section: Muntingiaceaementioning

confidence: 66%

The Piedra Chamana fossil woods (Eocene, Peru), II

Woodcock

Meyer

Prado

2019

IAWA J.

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“…Gum deposits are very common and found in vessels, ray cells, axial parenchyma, and fi bers. León (2008) also establishes the difference between genres of 31 species of Mimosoideae from Venezuela, taking characters as the presence or absence of septate fi bers, parenchyma type and rays. This specimen was compared with the extant species that now inhabit the Amazon region, whether endemic or not, and which present similar anatomical features: Abarema jupunba Willd, Enterolobium maximum Ducke, Inga alba Willd, and Marmaroxylon racemosum Killip, Zygya longifolia Willd and Zygia caulifl ora Killip.…”

Section: -Fabaceae Fossil Woods From the Solimões Formation Brazilmentioning

confidence: 94%

New record of Fabaceae fossil woods from the Solimões Formation (Miocene), Acre Basin, Amazon, Brazil

Kloster¹,

Gnaedinger²,

Rodrigues³

et al. 2015

Rev. bras. paleontol.

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-Detailed descriptions are provided for specimens of a new genus and species of Mimosoideae and Swartzioxylon naraense Delteil-Desneux emended (Papilionoideae) from the Solimões Formation, Miocene, Acre Basin, Brazil. Anatomical characteristics of the woods show a resemblance with the extant genera Zygia P. Browne and Swartzia Schreb, respectively. These genera currently have a wide distribution in Brazil and throughout the Amazon region; their presence in the outcrops of the Solimões Formation supports the idea that these genera might have been important components and indicates their importance in the fossil record, both to establish its distribution and evolution from the past to present of Amazon fl ora.Key words: wood anatomy, Mimosoideae, Papilionoideae, Neogene.RESUMO -Descrições detalhadas são fornecidas para os espécimes de um novo gênero e espécie de Mimosoideae e Swartzioxylon naraense Delteil-Desneux emend. (Papilionoideae) da Formação Solimões, Mioceno, bacia do Acre, Brasil. Características anatômicas das madeiras mostram uma semelhança com os gêneros viventes Zygia P. Browne e Swartzia Schreb, respectivamente. Esses gêneros têm atualmente uma ampla distribuição no Brasil e em toda a região amazônica, sua presença nos afl oramentos da Formação Solimões suporta a ideia de que poderiam ter sido importantes componentes e indica a sua importância no registro fóssil, tanto para estabelecer sua distribuição e evolução do passado ao presente da fl ora amazônica.Palavras-chave: anatomia da madeira, Mimosoideae, Papilionoideae, Neógeno.

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“…Bolzon et al (2010) observe the same tendency in Prosopis nigra Griseb. On the other hand, León (2008) registers a diffuse porosity in Prosopis juliflora (Sw) DC. , and Carril lo-Parra (2007) in P. laevigata.…”

Section: Porositymentioning

confidence: 98%

“…Bolzon et al (2010) observan la misma tendencia en Prosopis nigra Griseb. Por otro lado,León (2008) registra porosidad difusa en Prosopis juliflora (Sw.) DC., yCarrillo-Parra (2007) enResults and DiscussionSpecies identificationStaff members of the Herbario de Botánica of the Departamento de Botánica of the Centro de Ciencias Biológicas y Agrícolas de la Universidad de Guadalajara identified the botanical samples; the species was:Prosopis velutina Wooton.Family: Fabaceae.Common names: mezquite (Mx. ), velvet mesquite (USA), fluweel prosopis (Southafrica)…”

unclassified

Características anatómicas, físico-mecánicas y de maquinado de la madera de mezquite (Prosopis velutina Wooton)

Anda¹,

Arango²,

Juárez³

et al. 2018

RMCF

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Las características anatómicas, físico-mecánicas y de maquinado de la madera de mezquite (Prosopis velutina) fueron determinadas. Se recolectaron en el estado de Sonora cinco trozas de dos metros a partir del tocón. El estudio anatómico se efectuó conforme a lo estipulado por la IAWA. Las propiedades físico-mecánicas se evaluaron de acuerdo a las normas DIN. El maquinado se efectuó de forma manual y para la evaluación de la superficie se tomó como base la norma ASTM D 1666-87. La madera presentó porosidad difusa a semianular. Duramen con abundantes depósitos de color ámbar en vasos, parénquima axial y radial. Longitud y espesor promedio de fibras de 863 μm y 4.3 μm. Parénquima paratraqueal aliforme, confluente de alas anchas. Radios medulares homocelulares. Cristales prismáticos abundantes en cámaras de parénquima axial. Densidad básica de la madera muy alta (0.79 g cm-3) y con buena estabilidad dimensional. La resistencia a la flexión se clasificó como media (17 N mm-2), y bajo módulo de elasticidad (1 232 N mm-2). En resistencia a la compresión longitudinal se clasificó como muy alta (87 N mm-2), y el módulo de elasticidad bajo (1 915 N mm-2). La resistencia al impacto es regular (51 kJ m-2). Al cizallamiento se considera como dura (19 N mm-2). La dureza Brinell se califica como muy alta (tangencial 72 y radial 73 N mm-2, longitudinal 96 N mm-2). Buena respuesta al encolado (Nivel 5; 7 N mm-2). Su maquinado se califica como bueno, por lo que se deben utilizar herramientas de corte provistas con pastillas de carburo de tungsteno.

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Anatomía de Madera en 31 Especies de la Subfamilia Mimosoideae (Leguminosae) en Venezuela

Cited by 16 publications

References 7 publications

The Piedra Chamana fossil woods (Eocene, Peru), II

The Piedra Chamana fossil woods (Eocene, Peru), II

New record of Fabaceae fossil woods from the Solimões Formation (Miocene), Acre Basin, Amazon, Brazil

Características anatómicas, físico-mecánicas y de maquinado de la madera de mezquite (Prosopis velutina Wooton)

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