conservation

Molecular Data From Herbarium Specimens Reveal A Potential Extirpation of *Azolla microphylla* From California

Genetic analysis of herbarium specimens and recent field collections suggests that Azolla microphylla may have been extirpated from California.

Michael J. Song, Abbey Schedler, Griffin Wagner, Forrest Freund, Isaac L. Maarck, Carrie M. Tribble, Carl J. Rothfels, Pieter Johnson, Jenna T. B. Ekwealor