Index Kewensis: Supplement 20 (1991-1995)

Lists place of publication of names of genera and species of seed-bearing plants. From Supplement 16 all ranks from family downwards are included.

Entries at the same ranks for ferns and fern allies are included in the Kew Index from 1986 to 1989, otherwise see Index Filicum

• Index Kewensis: Supplement 20 (1991–1995).