Austrian botanist (1835-1889).
Johann Joseph Peyritsch (20 October 1835 – 14 March 1889) was a physician and botanist born in Völkermarkt. He was from Austria-Hungary. In 1864 he earned his medical doctorate from Vienna, and from 1866 to 1871 was associated with Vienna General Hospital. He later served as custos at the Naturhistorisches Museum in Vienna, and in 1878, succeeded Anton Kerner von Marilaun as professor of botany at the University of Innsbruck, a position he maintained until his death in 1889. He was editor of Heinrich Wilhelm Schott's celebrated monograph on aroids, Aroideae Maximilianae, and with Theodor Kotsc