Order Solanales
The Solanales is a widely distributed order of 5 families and over 4200 species of dicotyledenous flowering plants taking its name from the Solanaceae (nightshade family, 2600 species) and also including the Convolvulaceae (Morning Glories, 1650 species).
The Family Solanaceae includes herbs, shrubs, trees and vines, with branched hairs, often spines and commonly alkaloids. Although many Solanaceae contain deadly alkaloid poisons, the family also includes many agriculturally-important species with edible parts (aubergine, potato, sweet pepper, tomato). Tobacco Nicotiana is cultivated specifically for its toxic nicotine content and toxins from Datura species were used by native Americans in religous ceremonies. Nightshade toxins are said to have featured in European witchcraft and Mandrake root was used to relieve pain in e.g. childbirth.
The Family Convolvulaceae includes herbs, woody shrubs and climbers, some of which are noxious weeds.
Ipomoea (500 species) is the largest genus, with succulent tuber-forming species of horticultural merit. The sweet potato I. batatas is an important crop in many tropical countries. Cuscuta (Dodder) are parasites of other plants including cacti.
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Mandrake
Mandrago officinorum
Mandrago autumnalis
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Plant Families with Succulent Species 
