Gualterio Looser

Gualterio Looser Schallemberg (September 4, 1898, Santiago – July 22, 1982) was a Chilean botanist and engineer of Swiss parentage. He owned a factory that made agricultural implements.

In 1928 Looser joined the American Fern Society, and started to publish papers on the pteridophytes of Chile. His herbarium containing ca. 8000 specimens was given to Conservatoire et Jardin botaniques de la Ville de Genève.