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.; & Corresponding author: E-mail: 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 Elytraria macrophylla Leonard PHENOLOGY .— Flowering: July; fruiting: July. DISTRIBUTION .— Mexico (Hgo., Qro., S.L.P., Tamps.). HABITAT .— Tropical deciduous forest. ELEVATION .— 200–420 meters. NOTES .— Daniel and Acosta C. (2003) provided a description of this uncommon species, which is rare in Tamaulipas . The lemon yellow flowers ( Fig. 2F ) turn whitish with age . REPRESENTATIVE SPECIMENS .— Mpio. Aldama, Sierra de Tamaulipas, Las Yucas (ca. 23° 14ʹN, 98°10ʹW), R. Dressler 2018 ( GH , MO , US ); Mpio. Villa de Casas, Cañón del Diablo, H. Puig 454 ( ENCB ).