Career
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 and Jardin Botanique Geneva.
Boldea boldus (=Peumus boldus)
Cryptocarya alba (Molina) Looser
Laureliopsis philippiana (Looser) Schodde as Laurelia
Sticherus squamulosus (Desv) Nakai various gunckelianus (Looser)R. Rodr. et Ponce as Dicranopteris.
