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The Potato family ( Nightshade family ) - Solanaceae - comprises
about 2500 species of plants spread all over the world but mainly in tropical
America. They are herbs, trees and shrubs. Many of these species are very important
for mankind because of their value as food (Potatoes,
tomatoes , peppers, etc.,), because of their alkaloid properties(tobacco,
deadly nightshade,
Thorn-apple, henbane,
mandrake, etc.) and
as garden plants.
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| Leaves ( 1 ) : alternate, undivided or slightly lobed, without stipules. | |
| Stems ( 2 ): upright or low-growing, many climbing. | |
| Flowers : bearing radial symmetry, generally bell-shaped or cup- shaped ; solitary or in cymes. |
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| Calyx ( 3 ) : 5 sepals |
Datura meteloides |
| Corolla ( 4 ) : 5 petals. | |
| Stamens : 5 | |
| Ovary : superior with 2 carpels. | |
| Style : 1 |
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| Fruit( 5 ): capsule or berry. |
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Capsule of "Datura stramonium L." |
GENERA
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The most important ones are the following:
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