''Index Filicum'' is a discontinued series of botanical indices on
fern
A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except ...
s, started by
Carl Christensen in 1906
and continued in the form of seven supplements by Christensen and other authors until 1997. As of supplement 5, the index also covered
lycophytes
The lycophytes, when broadly circumscribed, are a vascular plant (tracheophyte) subgroup of the kingdom Plantae. They are sometimes placed in a division Lycopodiophyta or Lycophyta or in a subdivision Lycopodiophytina. They are one of the oldest ...
and
horsetails
''Equisetum'' (; horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family of ferns, which reproduce by spores rather than seeds.
''Equisetum'' is a "living fossil", the only living genus of the entire subclass ...
. There was an earlier work of the same name by
Thomas Moore
Thomas Moore (28 May 1779 – 25 February 1852) was an Irish writer, poet, and lyricist celebrated for his ''Irish Melodies''. Their setting of English-language verse to old Irish tunes marked the transition in popular Irish culture from Irish ...
, published in eight volumes between 1857 and 1863.
The forward to supplement seven stated that the supplements would be issued every five years from then on. However, since then, no further volume has been issued.
Kew Gardens
Kew Gardens is a botanical garden, botanic garden in southwest London that houses the "largest and most diverse botany, botanical and mycology, mycological collections in the world". Founded in 1840, from the exotic garden at Kew Park, its li ...
, the publisher of the two most recent supplements, has decided instead to rely on the International Plant Names Index (http://www.ipni.org/index.html — online).
''Index Filicum'' volumes
*''Index Filicum, sive Enumeratio Omnium Generum Specierumque Filicum et Hydropteridum, ab Anno 1753 ad Finem Anni 1905, Descriptorum adjectis Synonymis Principalibus, Area Geographica, etc.''. by Christensen, Carl Frederik Albert. Hafniae apud H. Hagerup. 1906. lx/744/(2) pp., hardcover.
[
*''Supplement I: Index Filicum, Supplementum (I) 1906-1912''. by Christensen, Carl Frederik Albert. Hafniae apud H. Hagerup. 1913. vi/132 pp, hardcover.
*''Supplement II: Index Filicum, Supplementum Preliminaire (II), pour les Annees 1913, 1914, 1915, 1916''. by Christensen, Carl Frederik Albert. S. A. I Le Prince Bonaparte, Hafniae. 1917. iv/60 pp, hardcover.
*''Supplement III: Index Filicum, Supplementum Tertium, pro Annis 1917-1933''. by Christensen, Carl Frederik Albert. apud H. Hagerup. 1934. 220 pp, hardcover.
*''Supplement IV: Index Filicum, Supplementum Quartum, pro Annis 1934-1960''. by Pich]