author
1881–1955
A Dutch botanist and mycologist, he helped turn the study of mushrooms into something approachable for general readers. He is best known for co-authoring a lively early guide to fungi that mixes practical knowledge with clear enthusiasm for the natural world.

by Cath. (Catharina) Cool, H. A. A. van der (Hendrik Adrianus Abraham) Lek
Born in 1881, Hendrik Adrianus Abraham van der Lek was a Dutch scientist whose work centered on plants and fungi. Surviving records linked to his publications show a career that ranged from mycology to plant science, including research on woody cuttings and studies connected with herbarium material.
For many readers, his most accessible work is Het paddenstoelenboekje, written with Catharina Cool. The book was designed as an inviting guide to mushrooms, helping non-specialists learn how to recognize and appreciate fungi rather than treating the subject as something only for experts.
Although detailed biographical information appears to be scarce online, his published work suggests a careful observer with a gift for practical explanation. He died in 1955, leaving behind a small but distinctive place in early twentieth-century Dutch natural history writing.