Deiregyne tenorioi Soto Arenas & Salazar, a new orchid species from the Mexican states of Hidalgo, Estado de México, Oaxaca, Puebla, and Tlaxcala, is described and illustrated. It is similar to D. eriophora (B.L. Rob. & Greenm.) Garay and D.…

A new species, Digitaria michoacanensis from northern Michoacán and the adjacent part of the state of México in the central-west region of México, is described. Pending an updated phylogenetic infrageneric classification of the genus; the new species is placed in…

Coronary anomalies are rare, with a reported prevalence of 1.3% among patients who undergo coronary angiography. The great majority of coronary artery anomalies are incidental findings and are not clinically significant, but in some cases, may be responsible for angina,…