Luciana, Full title should be: Index filicum in horto botanico Lipsiensi annis 1837-43 cultarum. Leipzig, 1843 2 pages, obviously no author. Must be extremely rare. http://gso.gbv.de/xslt/DB=2.1/SET=1/TTL=11/CMD?ACT=SRCHA&IKT=1016&SRT= YOP&TRM=hortus+lipsiensi Francisco University of Goettingen, Germany www.animalbase.org