| Substance | Abbreviation | Systematics | Provings |
| Abacavir Abacavir |
Abavir | Synthetic Drugs |
|
| Abelia longifolia |
Abeli-l | Caprifoliaceae |
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| Abelia schumannii Schumann abelia |
Abeli-s | Caprifoliaceae |
|
| Abeliophyllum distichum White Forsythia |
Abeli-d | Oleaceae |
|
| Abelmoschus esculentus Okra |
Abel-e | Malvaceae |
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| Abelmoschus moschatus Musk seed |
Abel | Malvaceae |
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| Abies alba European silver fir |
Abies-a | Pinaceae |
|
| Abies balsamea Balsam fir |
Abies-bal | Pinaceae |
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| Abies nigra Black Spruce |
Abies-n | Pinaceae |
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| Abietinella abietina |
Abiet-a | Thuidiaceae |
|
| Abroma augusta Devil´s Cotton |
Abro-a | Sterculiaceae |
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| Abrus precatorius/ Jequirity Carb´s Eye Vine |
Abr | Leguminosae/ Fabaceae/ Papilionaceae |
|
| Abutilon megapotamicum Trailing Abutilon |
Abut-m | Malvaceae |









