A system of plant taxonomy, the Eichler system was the first phylogenetic (phyletic) or evolutionary system.[1][2] It was developed by August W. Eichler (1839–1887), initially in his Blüthendiagramme (1875–1878) and then in successive editions of his Syllabus (1876–1890).[3][4][5] After his death his colleague Adolf Engler (1844–1930) continued its development, and it became widely accepted.
The system was based on dividing the plant kingdom into those plants with concealed reproductive organs (non-floral), the (Cryptogamae, = hidden reproduction) and those with visible reproductive organs (floral), the (Phanerogamae, = visible reproduction).[6] Moreover, Eichler was the first taxonomist to separate the Phanerogamae into Angiosperms and Gymnosperms and the former into Monocotyledonae and Dicotyledonae.[7] His primary ranks were Divisions (Abtheilung), followed by orders (Reihe).
Blüthendiagramme (1875–1878)
Volume I (1875)
Contents pp. VI–VIII
Synopsis:
Division I Gymnospermae p. 54
Division II Monocotyledoneae p. 73
Division III Dicotyledoneae p. 187 (part)
Volume II (1878)
Contents pp. V–VIII
Synopsis:
Division III Dicotyledoneae p. 187 (continued)
Syllabus (Fourth edition 1886)
The system (here taken from the 4th edition of the Syllabus, 1886) divides plants into divisions, classes and groups. Groups were further divided into orders.
Syllabus der Vorlesungen über Phanerogamenkunde Lipsius und Tischer, Kiel 1876.
Subsequent editions published as Syllabus der Vorlesungen über specielle und medicinisch-pharmaceutische Botanik, 2nd ed. 1880, 3rd ed. 1883, 4th ed. 1886, 5th 1890
Oudemans, C.A.J.A. (1896). Rangschikking der Planten. in Oudemans, C.A.J.A. & Hugo de Vries. Leerboek der plantenkunde, ten gebruike bij het hooger onderwijs. volume 2(2).
Goldberg, Aaron (1986). "Classification, Evolution and Phylogeny of the Families of Dicotyledons". Smithsonian Contributions to Botany. 58 (58): 1–314. doi:10.5479/si.0081024X.58.
This is a selected list of the more influential systems. There are many other systems, for instance a review of earlier systems, published by Lindley in his 1853 edition, and Dahlgren (1982). Examples include the works of Scopoli, Ventenat, Batsch and Grisebach.
Prodromus systemati naturalis regni vegetabilis sive enumeratio contracta ordinum, generum specierumque plantarum huc usque cognitarum, juxta methodi naturalis normas digesta