| Table of contents Polibotánica n.27 México Apr. 2009 The genus Gentiana (Gentianaceae) in Mexico Villarreal-Quintanilla, José A.; Estrada-Castillón, A. Eduardo; Jasso de Rodríguez, Diana
| | Extinct or rare pteridophytes of the Valley de Mexico Arreguín-Sánchez, María de la Luz; Quiroz-García, David Leonor; Fernández-Nava, Rafael
| | Small-scale environmental gradients in a pine-oak forest community in Nueva Colonia, Mezquitic, Jalisco, Mexico Nieves-Hernández, Gregorio; Vázquez-García, J. Antonio; Vargas-Rodriguez, Yalma L.; Vázquez-García, Marcelino; González-Gallegos, Jesús
| | Changes in the struture and composition of the vegetation relative to the years of abandonment of agricultural land in the tropical dry forest of the Dzilam reservation, Yucatan, Mexico Leirana-Alcocer, Jorge L.; Hernández-Betancourt, Silvia; Salinas-Peba, Luis; Guerrero-González, Leonardo
| | Diversity structure and productivity of temperate forests of Durango, Mexico Návar-Cháidez, José de Jesús; González-Elizondo, Socorro
| | Floral anatomy of five Opuntia species (Opuntioideae, Cactaceae) of Mexico Fuentes-Pérez, Mireya; Terrazas, Teresa; Arias, Salvador
| | The effect of phenanthrene on protein expression and radical enzymatic activity in Cyperus hermaphroditus Guerrero-Zúñiga, L. Angélica; Rodríguez-Dorantes, Angélica Ma.
| | Production and storage of acorns in Quercus hintonii Warburg (Fagaceae) from the Rio Balsas Depression, Mexico Díaz-Pontones, David; Reyes-Jaramillo, Irma
| | Evaluación de la actividad alelopática del extracto acuoso de las hojas de Eugenia involucrata DC. y Acca sellowiana (O.Berg) Burret Sausen, Tanise Luisa; Löwe, Tatiana Raquel; Figueiredo, Luciano Silva; Buzatto, Cristiano Roberto
| | Los usos múltiples de las plantas de Sabana: un estudio de la comunidad "Sitio Pindura", Rosário Oeste, Mato Grosso, Brasil Moreira, Déborah Luíza; Guarim-Neto, Germano
| | Ethnobotany of seven medicinal roots in the Sonora Market of Mexico City Manzanero-Medina, Gladys Isabel; Flores-Martínez, Alejandro; Sandoval-Zapotitla, Estela; Bye-Boettler, Robert
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