Karl Friedrich Wilhelm Wallroth
He attended classes in medicine and botany at the University of Halle, afterwards continuing his studies in Göttingen, where he was a pupil of botanist Heinrich Adolf Schrader (1767-1836). In 1816 he obtained his medical doctorate at the University of Göttingen. In 1822 he was appointed district physician to the city of Nordhausen, where along with his duties as a doctor, he performed botanical research.
Among his writings were a treatise on cryptogams native to Germany, Flora Cryptogamica Germaniae (1831–33), and a study on the biology of lichens, titled Naturgeschichte der Flechten (1825 and 1827). He is credited for introducing the terms "homoiomerous" and "heteromerous" to explain two distinct forms of lichen thallus.
- http://www.aluka.org/action/showMetadata?doi=10.5555%2FAL.AP.PERSON.K1409 Aluka biography
- Biography @ Allgemeine Deutsche Biographie
- SCHLECHTENDALIA 23 Lichenology in Germany: past, present and future
- Lichens by Annie Lorrain Smith
- IPNI. Wallr.