Fieldwork in connection with the project to document the flora of the
Mixteca Alta region, northwestern Oaxaca, Mexico, has resulted in the
discovery of the following taxa: Verbesina calzadae and Viguiera gramm
atoglossa var. huajuapana (Heliantheae); Sinclairia manriquei (Liabeae
); and Pscalium schillingii (Senecioneae).