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English Ivy (Hedera helix) - http://www.nps.gov/plants/alien/fact/hehe1.htm
Description, images, invasiveness in the USA, and control. |
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Poisonous Plants: Hedera helix - http://www.ces.ncsu.edu/depts/hort/consumer/poison/Hederhe.htm
Description and images from Poisonous Plants of North Carolina. |
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Hedera helix - http://www.plant-identification.co.uk/skye/araliaceae/hedera-helix.htm
Information and photographs of the leaves and flowers of Ivy. |
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English Ivy - http://bioweb.uwlax.edu/bio203/s2009/hitchins_abby
Research project on Hedera helix by Abby Hitchins at the University of Wisconsin-LaCrosse. |
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Ivy: Its Benefits, Disadvantages and How to Kill it. - http://www.whatprice.co.uk/gardening/ivy.html
Information on this plant, its effects on trees and brickwork, how to remove it and the difficulties of killing it completely. |
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Hedera helix - http://www.dipbot.unict.it/orto/0214-1.html
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Hedera helix Fact Sheet - http://www.cnr.vt.edu/dendro/dendrology/syllabus/hhelix.htm
Description and images. |
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Hedera helix - http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Hedera+helix&CAN=LATIND
Information on Ivy, its physical characteristics, habitat, medicinal and other uses, and its cultivation. |
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Hedera colchica - http://ip30.eti.uva.nl/bis/flora.php?selected=beschrijving&menuentry=soorten&id=3219
Classification, diagnostic features, habitat and distribution of Persian ivy. |
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Hedera algeriensis - http://ip30.eti.uva.nl/bis/flora.php?selected=beschrijving&menuentry=soorten&id=3220
Classification, diagnostic features, habitat and distribution of Algerian ivy. |