WARMING, EUG.

Om planterigets livsformer.

Kjøbenhavn, Gad, 1908.

Large8vo. In contemporary half cloth. Light wear to spine and previous owner's name in pencil to title-page, otherwise a nice and clean copy. (4), 86 pp.

First edition of this work in which Warming further developed his system he first introduced in 1896. Here, he presented a hierarchical system in which he first divided plants into heterotrophs and autotrophs. He then subdivided the autotrophs into aquatic plants and terrestrial plants, which were again divided into different types.

Order-nr.: 62522