William Nylander (botanist)

William (Wilhem) Nylander (3 January 1822 – 29 March 1899)[1] was a Finnish botanist and entomologist. Nylander was born in Oulu, and taught at the University of Helsinki before moving to Paris, where he lived until his death in 1899.

William Nylander (1885)

Nylander studied medicine, receiving a degree in 1847. Nylander pioneered the technique of determining the taxonomy of lichens by the use of chemical reagents, such as potassium hydroxide, tinctures of iodine and calcium hypochlorite, still used by lichenologists as the K and C tests.[2]

Nylander was the first to realise the effect of atmospheric pollution on the growth of lichens, an important discovery that paved the way for the use of lichens to detect pollution and determine the cleanness of air. His brother Fredrik Nylander was also a botanist.

References
  1. Kotivuori, Yrjö (2005). "William Nylander". Ylioppilasmatrikkeli 1640–1852 (The alumni book) (in Finnish). Helsingin yliopisto. Retrieved 22 January 2015.
  2. Vitikainen, Orvo (2001). "William Nylander (1822–1899) and Lichen Chemotaxonomy". The Bryologist. 104 (2): 263–267. doi:10.1639/0007-2745(2001)104[0263:WNALC]2.0.CO;2. ISSN 0007-2745. JSTOR 3244891. S2CID 85930554.
  3. International Plant Names Index.  Nyl.
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