Leaf anatomy of Medicinal Shrubs and Trees from Gallery Forests of the Paranaense Province (Argentina): Part 1 Anatomía foliar de árboles y arbustos medicinales de las selvas en galería de la provincia Paranaense (Argentina). Parte 1

Sixty two species of shrubs and trees belonging to 28 families inhabiting gallery forests of the Paranaense biogeographic province (Argentina) have been cited with medicinal properties. The aim of this study was to provide a tool to recognize these taxa from fragmented leaf samples. Fresh material a...

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Published in:Boletín de la Sociedad Argentina de Botánica Vol. 41; no. 3-4; pp. 233 - 268
Main Authors: Ana M. Arambarri, Susana E. Freire, Marta N. Colares, Néstor D. Bayón, María C. Novoa, Claudia Monri, Sebastián A. Stenglein
Format: Journal Article
Language:English
Published: Sociedad Argentina de Botánica 01-12-2006
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Abstract Sixty two species of shrubs and trees belonging to 28 families inhabiting gallery forests of the Paranaense biogeographic province (Argentina) have been cited with medicinal properties. The aim of this study was to provide a tool to recognize these taxa from fragmented leaf samples. Fresh material and hydrated herbarium specimens fixed in FAA were surveyed. The main differential traits are: hypodermis presence (e.g. Myrceugenia glaucescens ); stomata and trichome types (e.g. ciclocytic stomata in Baccharis spp.; cystolith-like structure in trichomes in Aloysia gratissima var. gratissima ); midvein transection outlines (e.g. midvein convex and keel-shaped on the adaxial side in Allophylus edulis ), mesophyll of the leaf blade (e.g. indifferentiated in Poiretia tetraphylla ); presence of idioblastic sclereids (e.g. in the petiole of Rollinia emarginata ), presence and types of crystals (e.g. crystal sand in Sambucus australis ); presence of secretory structures (e.g. large secretory cavities in Malvaceae and Myrtaceae). We can conclude that the leaf features have diagnostic value to identify species. As a result, we offer a key to distinguish these 62 species and illustrations to clarify it. Ecological interpretation of leaf structures is also given.Entre los árboles y arbustos que forman las selvas en galería de la provincia biogeográfica Paranaense (Argentina), 62 especies pertenecientes a 28 familias son citadas como medicinales. El objetivo de este trabajo es proveer elementos para el reconocimiento de estos taxones a partir de hojas fragmentadas. Para el estudio se utilizó material fresco y ejemplares de herbario recuperados y fijados en FAA. Algunos de los principales caracteres de identificación son: la presencia de una hipodermis (e.g. en Myrceugenia glaucescens ); los tipos de estomas (e.g. los estomas ciclocíticos en Baccharis spp.) y de tricomas (e.g. los tricomas cistolíticos en Aloysia gratissima var. gratissima ); el contorno de la vena media (e.g. la vena media convexa y aquillada en la cara adaxial en Allophylus edulis ); el mesofilo foliar (e.g. indiferenciado en Poiretia tetraphylla ); la presencia de esclereidas idioblásticas (e.g. en el pecíolo de Rollinia emarginata ); la presencia y los tipos de cristales (e.g. arena cristalina en Sambucus australis ) y las estructuras secretoras (e.g. la presencia de grandes cavidades secretoras en las familias Malvaceae y Myrtaceae). Se brinda una clave e ilustraciones para la determinación de las especies así como una interpretación ecológica de las diferentes estructuras halladas en las hojas.
AbstractList Sixty two species of shrubs and trees belonging to 28 families inhabiting gallery forests of the Paranaense biogeographic province (Argentina) have been cited with medicinal properties. The aim of this study was to provide a tool to recognize these taxa from fragmented leaf samples. Fresh material and hydrated herbarium specimens fixed in FAA were surveyed. The main differential traits are: hypodermis presence (e.g. Myrceugenia glaucescens ); stomata and trichome types (e.g. ciclocytic stomata in Baccharis spp.; cystolith-like structure in trichomes in Aloysia gratissima var. gratissima ); midvein transection outlines (e.g. midvein convex and keel-shaped on the adaxial side in Allophylus edulis ), mesophyll of the leaf blade (e.g. indifferentiated in Poiretia tetraphylla ); presence of idioblastic sclereids (e.g. in the petiole of Rollinia emarginata ), presence and types of crystals (e.g. crystal sand in Sambucus australis ); presence of secretory structures (e.g. large secretory cavities in Malvaceae and Myrtaceae). We can conclude that the leaf features have diagnostic value to identify species. As a result, we offer a key to distinguish these 62 species and illustrations to clarify it. Ecological interpretation of leaf structures is also given.Entre los árboles y arbustos que forman las selvas en galería de la provincia biogeográfica Paranaense (Argentina), 62 especies pertenecientes a 28 familias son citadas como medicinales. El objetivo de este trabajo es proveer elementos para el reconocimiento de estos taxones a partir de hojas fragmentadas. Para el estudio se utilizó material fresco y ejemplares de herbario recuperados y fijados en FAA. Algunos de los principales caracteres de identificación son: la presencia de una hipodermis (e.g. en Myrceugenia glaucescens ); los tipos de estomas (e.g. los estomas ciclocíticos en Baccharis spp.) y de tricomas (e.g. los tricomas cistolíticos en Aloysia gratissima var. gratissima ); el contorno de la vena media (e.g. la vena media convexa y aquillada en la cara adaxial en Allophylus edulis ); el mesofilo foliar (e.g. indiferenciado en Poiretia tetraphylla ); la presencia de esclereidas idioblásticas (e.g. en el pecíolo de Rollinia emarginata ); la presencia y los tipos de cristales (e.g. arena cristalina en Sambucus australis ) y las estructuras secretoras (e.g. la presencia de grandes cavidades secretoras en las familias Malvaceae y Myrtaceae). Se brinda una clave e ilustraciones para la determinación de las especies así como una interpretación ecológica de las diferentes estructuras halladas en las hojas.
Author Susana E. Freire
Sebastián A. Stenglein
Claudia Monri
Néstor D. Bayón
María C. Novoa
Marta N. Colares
Ana M. Arambarri
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  fullname: Sebastián A. Stenglein
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Snippet Sixty two species of shrubs and trees belonging to 28 families inhabiting gallery forests of the Paranaense biogeographic province (Argentina) have been cited...
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StartPage 233
SubjectTerms Anatomy
Anatomía
Argentina
Gallery forests
Hoja
Leaves
Medicinal plants
Paranaense biogeographic province
Plantas medicinales
Provincia biogeográfica Paranaense
Selvas en galería
Title Leaf anatomy of Medicinal Shrubs and Trees from Gallery Forests of the Paranaense Province (Argentina): Part 1 Anatomía foliar de árboles y arbustos medicinales de las selvas en galería de la provincia Paranaense (Argentina). Parte 1
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