Hoffmannia uxpanapense (Rubiaceae), a new species from southern Veracruz and Oaxaca, Mexico Údair: Castillo-Campos, Gonzalo, Bautista-Bello, Alma Patricia

Hoffmannia rzedowskiana (Rubiaceae), a new species of southern Mexico and Nicaragua Údair: Castillo-Campos, Gonzalo, Bautista Bello, Alma Patricia, Lorence, David H.

Biological variation in climbing aroids Údair: Bautista-Bello, Alma Patricia, Krömer, Thorsten, Acebey, Amparo R., Weichgrebe , Leticia, Zotz, Gerhard