German botanist (1859-1951).
Johann Heinrich Sandstede (10 March 1859 – 5 March 1951) was a German lichenologist and local historian who contributed to the study of lichens, particularly the genus Cladonia. Born in Bad Zwischenahn, Oldenburg, Sandstede initially worked as a baker before dedicating his career to botany and lichenology. He published extensive research on the lichen funga of Northwest Germany and the Frisian Islands, including a notable work on Cladonia in the Rabenhorst series. Sandstede's contributions to lichenology earned him recognition from scientific societies and an honorary doctorate from the Univer