Flora del Valle de Tehuacán - Cuicatlán. Apiaceae

Abstract

Hierbas anuales, bienales o perennes, rara vez arbustos, generalmente aromáticas, ocasionalmente hidrófitas o paludícolas. Raíces tuberosas individuales o fasciculadas a fibrosas. Tallos simples o ramificados, erectos, decumbentes o postrados, con frecuencia fistulosos, estriados longitudinalmente, generalmente glabros, ocasionalmente estoloníferos o ausentes. Hojas alternas, ocasionalmente opuestas, basales y/o caulinares, simples o compuestas y diversamente divididas, exestipuladas; pecíolos generalmente envainantes;

Spatial phylogenetics in Hechtioideae (Bromeliaceae) reveals recent diversification and dispersal

“…Geographic distribution data and areas for assessment. Georeferenced records of the Hechtioideae were obtained from a comprehensive literature revision that included protologues of all the species in the group, general and specific taxonomic treatments for particular states of Mexico and natural areas (Pulido-Esparza et al 2004, Espejo-Serna et al 2005, Espejo-Serna et al 2007, Espejo-Serna et al 2010, López-Ferrari & Espejo-Serna 2014a, González-Rocha et al 2016, Espejo-Serna et al 2017, Espejo-Serna et al 2020 Records with no exact coordinates, but with detailed descriptions of the collection site were georeferenced with the program Google Earth Pro v. 7.3.3.7786 (Google 2020). A total of 94 species were considered; of these, five have not yet been described but were included because there is sufficient molecular and morphological information available to consider them in the phylogenetic analysis.…”

“…The central and southern regions of Megamexico III, corresponding to the Neotropical (NT) and Mexican Transition Zone (MTZ), are areas with a high diversity of Hechtioideae. These regions display a great variety of climates and environments, giving rise to different types of vegetation, some of these being the habitats where the Hechtioideae thrive, such as deciduous tropical forests and xeric shrublands (Espejo-Serna et al 2005, Rzedowski 2006, Espejo-Serna et al 2010, López-Ferrari & Espejo-Serna 2014a. Hechtioideae show a high species richness in NT and MTZ, with 59 and 56 species, respectively, and high endemism rates, with WE values of 44.5 and 39.5, respectively (Table 1).…”

“…; Ramírez-Morillo et al 2014), giving them a wide variety of sizes and shapes (Figure 1). They usually grow in open areas, rocky outcrops, and cliffs, and are often found in xeric shrublands, deciduous tropical forests, and, occasionally, oak-pine forests (López-Ferrari & Espejo-Serna 2014a, Ramírez-Morillo et al 2014.…”

“…In recent years, efforts have been made to determine the evolutionary history of this group of plants by analyzing their phylogenetic relationships and the description and delimitation of their species (García-Ruiz et al 2014, González-Rocha et al 2014, López-Ferrari & Espejo-Serna 2014a, Ramírez-Morillo et al 2014, Ramírez-Morillo et al 2015, Ramírez-Morillo et al 2016, Flores-Argüelles et al 2019, Hernández-Cárdenas et al 2019, Hernández-Cárdenas et al 2020, Romero-Soler et al 2022). These advances have made possible to identify the monophyly of Hechtioideae and the presence of three well-supported clades corresponding to three genera; Bakerantha with five species, Hechtia with ca.…”