Difference between revisions of "Combretaceae"

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(New page: {{Returntotable}} '''Description:''' A family of trees and lianas, widespread in the Old World and New World tropics. In this area, the family is represented by one liana species and one...)
 
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[[Image: Combretaceae.jpg|thumb|right|300px|Combretaceae]]
  
 
'''Description:''' A family of trees and lianas, widespread in the Old World and New World tropics. In this area, the family is represented by one liana species and one genus of trees. The liana (Combretum laxum) has opposite leaves and mucilage canals (the broken twig has a hollow center full of a gummy substance). The trees (the genus Terminalia) have alternate leaves which are usually strongly clustered, and often with a pair of glands (small raised areas on the leaf blade which secrete sugars) at the base of the lamina. The leaf base along the sides of the petiole may be inrolled; i.e., the edges of the leaf curl under. Terminalia trees have a pagoda-like architecture similar to that of Myristicaceae, but this may be hard to see in the forest. A better character is their smooth whitish bark and tall, narrow buttresses. Some species are especially common along river banks. The Quebrada Surá at La Selva takes its name from the local name for T. amazonia, which is very abundant by the creek.
 
'''Description:''' A family of trees and lianas, widespread in the Old World and New World tropics. In this area, the family is represented by one liana species and one genus of trees. The liana (Combretum laxum) has opposite leaves and mucilage canals (the broken twig has a hollow center full of a gummy substance). The trees (the genus Terminalia) have alternate leaves which are usually strongly clustered, and often with a pair of glands (small raised areas on the leaf blade which secrete sugars) at the base of the lamina. The leaf base along the sides of the petiole may be inrolled; i.e., the edges of the leaf curl under. Terminalia trees have a pagoda-like architecture similar to that of Myristicaceae, but this may be hard to see in the forest. A better character is their smooth whitish bark and tall, narrow buttresses. Some species are especially common along river banks. The Quebrada Surá at La Selva takes its name from the local name for T. amazonia, which is very abundant by the creek.

Revision as of 16:39, 9 June 2008

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Combretaceae

Description: A family of trees and lianas, widespread in the Old World and New World tropics. In this area, the family is represented by one liana species and one genus of trees. The liana (Combretum laxum) has opposite leaves and mucilage canals (the broken twig has a hollow center full of a gummy substance). The trees (the genus Terminalia) have alternate leaves which are usually strongly clustered, and often with a pair of glands (small raised areas on the leaf blade which secrete sugars) at the base of the lamina. The leaf base along the sides of the petiole may be inrolled; i.e., the edges of the leaf curl under. Terminalia trees have a pagoda-like architecture similar to that of Myristicaceae, but this may be hard to see in the forest. A better character is their smooth whitish bark and tall, narrow buttresses. Some species are especially common along river banks. The Quebrada Surá at La Selva takes its name from the local name for T. amazonia, which is very abundant by the creek.

Economic uses: Some Terminalia species are important timber trees, and one imported Old World species (T. catappa, frequently grown in gardens) has edible seeds.


Descripción: Una familia de árboles y bejucos, común en las zonas tropicales en todo el mundo. En esta área, hay un bejuco leñoso y un género arbóreo de Combretaceas. El bejuco (Combretum laxum) tiene hojas opuestas, y los tallos tienen canales de mucílago (en el centro de la rama presenta una cavidad que lleva una sustancia mucilaginosa). Los árboles, del genero Terminalia, tienen hojas alternas, usualmente agrupadas, y muchas veces con dos glándulas (pequeñas motas en la hoja que producen néctar) en la base de la lámina. La base de la hoja a veces está enrollada; es decir, los márgenes se ensortijan. Árboles del género Terminalia a veces tienen la ramificación verticilada, así como las Myristicaceas, pero muchas veces es difícil verla dentro del bosque. Otras características más llamativas son su corteza lisa y blancuzca, y sus gambas altas y estrechas. Algunas especies de Terminalia son muy comunes cerca de fuentes de agua. La Quebrada Surá en la Estación Biológica La Selva recibe este nombre haciendo referencia al nombre común de T. amazonia, especie muy abundante cerca del arroyo.

Usos económicos: Algunas especies de Terminalia tienen buena madera, y una exótica del viejo mundo (T. catappa, que se cultiva mucho en esta zona) tiene semillas comestibles.


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