Hormidium (disambiguation)

Hormidium is a group of orchids whose various species have been transferred to Encyclia, Epidendrum, Homalopetalum, Lepanthes, and Prosthechea.

Hormidium can also refer to:


 * A genus of algae, an illegitimate name whose application caused confusion, now included in the Prasiolaceae
 * Klebsormidium, a genus of filamentous charophyte green algae
 * Epidendrum subg. Hormidium, a subgenus of Epidendrum