COMMENT on Zorilla-Azcué, S., Gonzalez-Rodríguez, A., Oyama, K., González, M.A. & Rodríguez-Correa, H., The DNA history of a lonely oak: Quercus humboldtii phylogeography in the Colombian Andes. Ecology and Evolution 2021, doi:10.100-2/ece3.7529.

We praise the authors for their work, and for the lyric title of their paper. We give a concise sketch of the present level of understanding of Quercus forest in Colombia. We identify the shortcomings in this published paper. We improve the relevance of this paper about Quercus as well as for future phylogenetic investigations other montane forest taxa to be framed in the rapidly improving palaeoecological understanding of the Northern Andes.

Mexican Vascular Epiphytes: Richness and Distribution

The first complete checklist of the Mexican vascular epiphytes is presented, accompanied by data relating to its geographical distribution by state, elevational range, endemism, life form and type of vegetation in which each species can be found. Based on the review of herbarium specimens and specialized literature, as well as in the collection of botanical material in several regions of the country, we determined that the vascular epiphytes of Mexico are integrated by 24 orders, 37 families, 253 genera, and 1,813 species, of which 583 are endemic to the country. The families with the highest specific richness are Orchidaceae, Bromeliaceae, Polypodiaceae, and Piperaceae, while the genera with the highest number of taxa are Tillandsia, Epidendrum, and Peperomia. Only one gymnosperm, Ceratozamia tenuis, was registered as epiphyte. The types of vegetation that harbor the greatest richness are the cloud forest with 1,079 species and the Quercus forest with 837. One hundred eighty-six species are found in some category of the NOM-059-SEMARNAT-2010.

'Centaurea akcadaghensis' and 'C. ermenekensis' (Asteracaeae), two new species from Turkey

Two new species of Centaurea subg. Cyanus (Asteraceae) from Anatolia are described and illustrated. Centaurea akcadaghensis Uysal & Şirin occurs on open Quercus forest of Levent Canyon (Akçadağ-Malatya) and differs from C. matthiolifolia Boiss. mainly in stem, leaves, central flowers and achenes measures. Centaurea ermenekensis Şirin & Uysal is restricted to steppes of Göktepe (Ermenek-Karaman) and can be distinguished from C. reuteriana Boiss. by the stem, number of capitula, involucre and median appendages measures.

Orthoptera (Ensifera & Caelifera) collected using carrion traps in a Quercus forest in Jalisco, Mexico, with description of a new genus and a new species (Trigonidiidae: Nemobiinae)

An annotated list of Orthoptera species collected in carrion traps in a Quercus forest was compiled. Marcelonemobius mutum n. gen. et n. sp. (Trigonidiidae; Nemobiinae) is described. Four sites were chosen in an altitudinal gradient: 2,100, 2,300, 2,500 and 2,700 m. and monthly captures between September 2013 to August 2014. At each site, three carrion traps were placed separated by 100 m. A data logger situated at each altitude recorded temperature and humidity data. 175 individuals were registered belonging to seven families, 13 genera, and 15 species.

A new species of Dahlia (Asteraceae, Coreopsideae) from the state of Oaxaca, Mexico

Dahlia calzadana Villaseñor & Redonda-Mart. (Asteraceae, Coreopsideae), a new species from the district of Cuicatlan, state of Oaxaca is described and illustrated. It grows in the ecotone between the seasonal dry tropical forest and the Quercus forest. This new taxon differs from all other known species of Dahlia by its simple, conspicuously petiolate leaves and its white with pink tones ray florets.

La vegetación de la Reserva Ecológica Lomas del Seminario, Ajusco, México

The present work was carried out in the Reserva Ecológica Lomas del Seminario, Ajusco, D. F. to know the actual state of the vegetation. Two primary vegetation types were found: arid tropical scrub and Quercus forest as well as two secondary vegetation ones: Quercus scrub Sedum and arid tropical scrub; both associated to Sedum. A vegetation map of the zone is presented. It was determined the floristic composition and the physiognomy and structure of vegetation.