Taxonomic and Photographic Guide to the Acanthaceae of Tamaulipas, Mexico Author Daniel, Thomas F. Department of Botany, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, California 94118, U. S. A. tdaniel@calacademy.org Author García-Morales, Leccinum J. Herbario, Departamento de Posgrado e Investigación, Instituto Tecnológico de Ciudad Victoria, Blvd. Emilio Portes Gil 1301, Cd. Victoria, Tamaulipas, México; Author Mora-Olivo, Arturo Instituto de Ecología Aplicada, Universidad Autónoma de Tamaulipas, División del Golfo 356, Cd. Victoria 87019, Tamaulipas, México; text Proceedings of the California Academy of Sciences 2021 2021-09-30 67 6 185 228 journal article 10.5281/zenodo.11513051 0068-547X 11513051 Dyschoriste hirsutissima (Nees) Kuntze PHENOLOGY .— Flowering: November; fruiting: unknown. DISTRIBUTION .— Mexico (Ags., Chih., Chis., Col., Dur., Gto, Gro., Hgo., Jal., Méx., Mich., Mor., Nay., Oax., Pue., Sin., Son., Tamps., Ver., Zac.), Central America. HABITAT .—Thornscrub. ELEVATION .— Ca. 15–500 meters. NOTES .— Dyschoriste hirsutissima ( Fig. 2B ) is newly documented as occurring in Tamaulipas , and the specimens cited below represent its northeasternmost known occurrences. Daniel (1995) and Daniel and Acosta C. (2003) provided descriptions of the species. REPRESENTATIVE SPECIMENS .— Altamisa [ Altamira ] Rd., Tampico , L. Kenoyer 864 ( F ); Jardín Botánico del Noreste [proposed site], Sierra Madre Occidental , ladera E de Sierra Gorda , W de Cd. Victoria , A. McDonald 1052 ( TEX ).