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A Modern Herbal - http://www.botanical.com/botanical/mgmh/mgmh.html
Index of more than 800 varieties of herbs and plants, word search of the text, recipes, and an index of poisonous plants. |
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Botany Encyclopedia of Plants - http://www.botany.com/
Provides general description of plants, various methods of cultivation, soil and temperature requirements, pruning. |
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Virtual Palm Encyclopedia - http://www.plantapalm.com/vpe/vpe_index.htm
History, horticulture, pests and diseases, conservation, photographs, and references. |
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Lapshin's Succulent Encyclopedia - http://www.lapshin.org/succulent/
Photos of succulents of numerous families. |
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Metropolitan Plant Encyclopedia - http://www.bbg.org/sci/nymf/encyclopedia/
Consists of a series of pages on the plants of the New York metropolitan region. |