Plants

Marchantiophyta

Marchantiophyta Stotler & Stotl.-Crand.
Engl.: hepatics, liverworts.
Sven.: levermossa.
Suom.: maksasammal.
Deut.: Lebermoos.
Fran.: hépatiques, hepaticophyta, Hepatophyta.

Bryophyta

English: mosses.
German: Moose.
Finnish: Sammalet.
Swedish: moss.
French: bryophytes.

Lycopodiophyta

Lycopodiophyta D.H.Scott.
German: Bärlapppflanzen.
Finnish: liekomaiset.
French: lycophytes. em>French: lycophytes. Botanical synonym (?): Lycopodiophytina.

Pteridophyta

Pteridophyta Schimp.
English: ferns.
German: Gefäßsporenpflanzen.
Finnish: sanikkaiset.
Swedish: ormbunksväxter.
French: ptéridophytes.

Gymnospermae

English: gymnosperms.
German: Nacktsamige Pflanzen, Nacktsamer.
Finnish: paljassiemeniset.
Swedish: nakenfröiga växter, gymnospermer.
French: gymnospermes.

Angiospermae

According to the APG II system:

English: flowering plants, angiosperms.
German: Bedecktsamer.
Swedish: gömfröväxter.
French: angiospermes, plantes à fleurs.
Italian: magnoliofite.
Botanical synonym: Magnoliophyta.

Eudicotyledon

English: core eudicots.
Swedish: rottrikolpater, roteudicoter.
French: noyaux des dicotylédones vraies
Dependency: Angiospermae > Eudicotyledonae > Eudicotyledon. The nesting got too long for the sidebar, though, so I split it off.

Fungi

Botanically, it's not fungi -> families, but this lumps the fungi nicely under just three hierarchy levels (family - genus - species).

Algae

Lichenes

Animals

Constituents etc.