THE CACTUS AND SUCCULENT PLANT MALL : http://cactus-mall.com
(The most comprehensive collection of links on C&S. Many useful webpages)

ACTA BOTANICA MEXICANAhttp://dell.ieco.conacyt.mx/IE/Actbot.html
(Index of published articles and authors)
AMERICAN JOURNAL OF BOTANY http://www.botany.org/bsa/ajb
(Index and abstracts of latest issues)
ASPT NEWSLETTER gopher://nmnhgoph.si.edu:70/11/.botany/.aspt
(Gopher: American Society of Plant Taxonomists Newsletter)
BOOK SEARCH http://www.interloc.com
(Interloc book search database and more)
IAPT - TAXON http://bgbm3.bgbm.fu-berlin.de/IAPT/taxon
(International Association for Plant Taxonomy, list of the volumes of Regnum Vegetabile and abstracts of Taxon articles)
ICBN http://www.bgbm.fu-berlin.de/iapt/nomenclature/code/tokyo-e
(On-line text of the International Code of Botanical Nomenclature)
IOP NEWSLETTERS http://ibs.uel.ac.uk/palaeo/iop/iopnews/frame.htm
(International Organisation of Palaeobotany. Text of Newsletters since 1993)
ON LINE BOOKS http://www.mobot.org/mobot/research/books
(Missouri Botanical Garden on line books)
RAINBOW GARDENS BOOKSHOP http://www.cactus-mall.com/rainbow_bookshop/index.html
(The RGB on-line catalogue offers a wide range of books on cacti, other succulents and botany)
XPLOR - EXTENSION PUBLICATIONS LIBRARY ON REQUEST http://etcs.ext.missouri.edu/publications/xplor/index.htm
(University of Missouri-Columbia soils, insects and diseases. In the horticulture page there are articles on various subjects)

A WEB OF ON-LINE DICTIONARIES http://www.bucknell.edu/~rbeard/diction.html
(Linked to more than 400 dictionaries of over 130 different languages)
GLOSSARY OF BOTANICAL TERMS http://www.gardenweb.com/glossary
(On-line dictionary providing explanation for general botanical terminology)
GLOSSARY OF ROOTS OF BOTANICAL NAMES http://www.prairienet.org/garden-gate/botrts.htm
(Garden Gate on line glossary)
THE ETHNOBOTANICAL DICTIONARY http://www.ars-grin.gov/~ngrlsb/dictionary/tico/index.html
(USDA Agricultural Research Service on-line dictionary)

BOTANICAL COLLECTORS http://www.herbaria.harvard.edu/Data/Collectors/collectors.html
(Botanical Collectors from Index Herbariorum, Harvard University Herbarium, USA Harvard)
BOTANICAL DATABASES http://www.mobot.org/mobot/database.html
(Missouri Botanical Garden databases)
FIELD NUMBERS DATABASE http://ralph.cs.cf.ac.uk/Cacti/fieldno.html
(This database provides collector's name and locality information for field numbers submitted)
FLORA EUROPAE http://www.rbge.org.uk/forms/fe
(Royal Botanic Garden Edinburgh: Flora Europaea Database. Rank, status, distribution of European plants)
FLORA OF THE PERUVIAN AND ATACAMA DESERT http://ucjeps.berkeley.edu/abis/lomatax.html
(Checklist of the vascular flora)
FLORA OF USA, CANADA AND GREENLAND http://www.mip.berkeley.edu/bonap/checklist_intro.html
(A Synonymized Checklist of the vascular flora)
PHYTOCHEMICAL AND ETHNOBOTANICAL DATABASE http://www.ars-grin.gov/~ngrlsb
(Agricultural Research Service databases)
RBG KEW GENUS INDEX AND AUTHORS OF PLANT NAMES DATABASEShttp://www.rbgkew.org.uk/web.dbs/index.html
USDA PLANTS DATABASE http://trident.ftc.nrcs.usda.gov/plants
INSECT PATHOGENS http.//insectweb.inhs.uiuc.edu/Pathogens/EDWIP/index.html
(Ecological Database of the World's Insect Pathoges)

ASCLEPIADACEAE gopher://wiscinfo.wisc.edu:2070/11/.image/.bot/.401/Flowering_Plants/Dicots/Asclepiadaceae
(University of Wisconsin-Madison)
FLORA OF PERU gopher://gopher.mobot.org:70/11/FL_CL/CL_Peru
(Gopher)
PLANT TAXONOMISTS ON LINE gopher://gopher.unm.edu:70/11/academic/biology/pto
RBG KEW - GOPHER SERVER gopher://gopher.rbgkew.org.uk/

AU CACTUS FRANCOPHONE"  http://www.cactuspro.com
(the most comprehensive site on cacti & succulents in french language; index also in italian)
BRAZILIAN CACTI PROJECT http://www.brcactaceae.org
(A page devoted to Brazilian cacti by Marlon Machado)
BRASILIAN CEPHALIC CACTI http://members.aol.com/jamesicus
(Private website with good information on how to grow Discocacti, Melocacti and other cephalic species. Nice photographs)
CACTI & SUCCULENTS FORUM http://www.gardenweb.com/forums/cacti
(Garden Web forum, on cacti and other succulents)
CACTI_ETC http://www.hpl.hp.com/bot/cac (Home page of the discussion list)
CACTUS RECIPES http://www.graylab.ac.uk/usr/hodgkiss/crecipe.html
(Cook and eat your cacti following these recipes)
C.I.T.E.S. http://www.wcmc.org.uk:80/CITES/english/index.html
(All what you need to know on endangered species. Including database of CITES-listed species and news)
HARDY GARDEN SUCCULENTS http://www.rt66.com/~telp/garden.htm
(Sedum and Sempervivum)
RALPH MARTIN'S CACTUS PAGE http://ralph.cs.cf.ac.uk/cacti/cacti.html
ROYAL BOTANIC GARDENS KEW http://www.rbgkew.org.uk/
SAN PEDRO PAGE http://www.lycaeum.org/~iamklaus/cactindx.htm
(Trichocereus pachanoi, the Visionary Cactus Page)
SHABOMANIAC http://www.asahi-net.or.jp/~dt4k-ynd/index.htm
(japanese web site with very nice photographs of unusual plants.)
THE AMATEURS' DIGEST http://vvv.com/~amdigest/
(Books, plants, seeds, round robins, links)
THE ETHNOBOTANY CAFE ON THE WEB http://countrylife.net/ethnobotany
(Enjoy this nice place that provides interesting information on herbs and ethnobotany)
THE PEYOTE FOUNDATION http://www.peyote.net
(Information on traditional uses of Lophophora williamsii)
THE SUCCULENT PLANT PAGE http://www.graylab.ac.uk/usr/hodgkiss/succule.html
WHATZIT PAGE http://www.clarityconnect.com/webpages/hjmann/cactus.htm
(A site that helps to identify unnamed plants)

ASCLEPIADACEAE http://muse.bio.cornell.edu/delta/angio/www/asclepia.htm
(Cornell University)
ASCLEPIADACEAE http://morsec.eeb.uconn.edu/invmenus\Asclepia.htm
(University of Connecticut)
ECHINOCEREUS HOMEPAGE http://home.t-online.de/home/echinocereus.ohr.andreas
HAWORTHIA PAGE http://www.graylab.ac.uk/usr/hodgkiss/haworth.html
NOTOCACTUS INFORMATION EXCHANGE http://www.mfaint.demon.co.uk/cactus/noto/
GEOGRAPHICAL REFERENCES, MAPS AND METEO
CACTACEAE: MAPS http://www.csdl.tamu.edu/FLORA/kartesz/karcact5.htm
(Provides distribution maps for Cactaceae genera and some species)
PERRY-CASTANEDA LIBRARY MAP COLLECTION http://www.lib.utexas.edu/Libs/PCL/Map_collection/Map_collection.html
(Electronic maps from the Perry-Casta-eda Library Collection, University of Texas)
VIRTUAL GARDEN CLIMATIC ZONEFINDER http://mouth.pathfinder.com/VG/timelife/zonefinder
(Information on USDA hardyness zones)
INTERNOTO http://members.aol.com/notocacti/index.html
(International society of the friend of Notocacti)
THE ULTIMATE PARODIA PAGE http.//imol.vub.ac.be/cactus/data.html
(Taxonomy, cultivation and more on this genus)

EXTENSION TOXICOLOGY NETWORK (EXTOXNET) http://www.ace.orst.edu/info/extoxnet/ghindex.html
(Allows you to browse and search on pesticides and toxicology)
PLANT PATHOLOGY INTERNET GUIDE BOOK http://www.ifgb.uni-hannover.de/extern/ppigb/ppigb.htm
SOCIETA' ITALIANA DI FITOPATOLOGIA http://www.agr.unipi.it/sipav/menu.htm
BIOLOGICAL CONTROL http://ipmwww.ncsu.edu/biocontrol/biocontrol.html
(Biological control Virtual Information Center. General information on BC)
BENEFICIAL INSECT http://hamock.ifac.ufl.edu/txt/fair/19697.html
(Provides information on many beneficial insects with description and photos)

GROWING MEDIA http://www.cals.cornell.edu/dept/flori/growon/media/index.html
(Interesting site by Cornell with almost all on growing media)
FORUM ON GREENHOUSES http://www.gardenweb.com/forums/strucs
(Grden Web forum on Greenhouses and graden structures)
LIGHTING INDOOR HOUSE PLANTS http://etcs.ext.missouri.edu:70//publications/xplor/agguides/hort/g06515.html
(University of Missoury. This is part of the XPLOR)
LIGHT SYSTEMS http://www.wormsway.com/light1.html
(The Urban farming source book: commercial information on light systems)
NETMIND http://www.netmind.com
(Enables you to be advised when a page of interest moves to another URL)
ON LINE TRANSLATOR http://babelfish.altavista.digital.com/cgi-bin/translate?
CURRENCY CONVERTER http://www.oanda.com/cgi-bin/ncc?user=pathfinder2
(Enables you to view an exchange rate on any day from 1 January 1990 to the present)
UNITED STATES GOVERNMENT - CIA WORLD FACTBOOK  www.odci.gov/cia/publications/nsolo/wfb-all.htm