1. Dactylorhiza maculata
  2. Dalibarda repens
  3. Danae racemosa
  4. Daphne cneorum
  5. Daphne gnidium
  6. Daphne laureola
  7. Daphne mezereum
  8. Daphne pontica
  9. Dasiphora fruticosa
  10. Dasypyrum villosum
  11. Date palm
  12. Date-plum
  13. Datura metel
  14. Datura stramonium
  15. Daucus carota
  16. Decodon verticillatus
  17. Delphinium elatum
  18. Delphinium grandiflorum
  19. Delphinium staphisagria
  20. Dendrobium moniliforme
  21. Descurainia sophia
  22. Desmodium canadense
  23. Dianthus alpinus
  24. Dianthus armeria
  25. Dianthus barbatus
  26. Dianthus carthusianorum
  27. Dianthus caryophyllus
  28. Dianthus chinensis
  29. Dianthus deltoides
  30. Diapensia lapponica
  31. Dicentra cucullaria
  32. Dictamnus albus
  33. Digitalis ferruginea
  34. Digitalis lutea
  35. Digitalis purpurea
  36. Digitalis thapsi
  37. Dill
  38. Dillenia indica
  39. Dimorphotheca pluvialis
  40. Dioscorea alata
  41. Dioscorea bulbifera
  42. Dioscorea communis
  43. Dioscorea oppositifolia
  44. Dioscorea pentaphylla
  45. Dioscorea villosa
  46. Diospyros lotus
  47. Diospyros virginiana
  48. Diphasiastrum alpinum
  49. Diphasiastrum complanatum
  50. Diplotaxis muralis
  51. Dipsacus fullonum
  52. Dipsacus laciniatus
  53. Dipsacus pilosus
  54. Dirca palustris
  55. Distichlis spicata
  56. Dittrichia viscosa
  57. Dodecatheon meadia
  58. Doronicum plantagineum
  59. Dorstenia contrajerva
  60. Draba verna
  61. Dracocephalum moldavica
  62. Dragon's mouth
  63. Drimia maritima
  64. Drosera capensis
  65. Drosera indica
  66. Drosera rotundifolia
  67. Drosophyllum lusitanicum
  68. Dryas octopetala
  69. Dryopteris cristata
  70. Dryopteris filix-mas
  71. Dryopteris marginalis
  72. Drypis spinosa
  73. Dulichium arundinaceum
  74. Duranta erecta
  75. Dysphania ambrosioides
  76. Dysphania botrys
  77. Dysphania multifida



Digitalis purpurea


  • Foxglove  (Digitalis spp.)
  • Usage: Used for heart problems. Is effective, but:
  • Whether or not a given quantity of digitalis contains enough digoxin to lead to an overdose depends on the individual plant(s) it's from (each individual plant (even in the same species) has a different digoxin content) so those using digitalis are effectively playing Russian roulette. There is no way of knowing if one pill is good, or if it will lead to an overdose and kill you. As Encyclopedia.com puts it:

Foxglove is no longer used as a heart medicine because the therapeutic dose and the lethal dose are very close. Seasonal variations in the level of cardiac glycosides in the plant make the safe dose impossible to estimate except by an experienced physician and prescriber of the herb who monitors the patient on an hourly basis for signs of overdose. Few living doctors and herbalists can safely use digitalis as a plant extract. Specific standardized doses of pharmaceutical digoxin are used instead.<wiki/List_of_medicinal_plants#cite_note-98">

  • The solution is to use pure digoxin, if prescribed by a doctor, because the doses are exactly measured.
  • Harmful effects: Side effects may include irregular heart function and death.<wiki/List_of_medicinal_plants#cite_note-Digitalis-99"> Symptoms of digitalis overdose may include "stomach upset, small eye pupils, blurred vision, strong slow pulse, nausea, vomiting, dizziness, excessive urination, fatigue, muscle weakness and tremors, stupor, confusion, convulsions, abnormal heartbeats, and death. Long-term use of digitalis can lead to symptoms of toxicity, including visual halos, yellow-green vision, and stomach upset."<wiki/List_of_medicinal_plants#cite_note-Digitalis-99"> "Even touching the plant with bare skin has been known to cause rashes, headache, and nausea."<wiki/List_of_medicinal_plants#cite_note-theherbbook-7">

Datura stramonium

  • Jimson weed  (Datura stramonium)
  • Used for: spasmodic coughing, chronic laryngitis, asthma; used as an aphrodisiac in South America<wiki/List_of_medicinal_plants#cite_note-theherbbook-7">
  • Insufficient evidence to evaluate efficacy.<wiki/List_of_medicinal_plants#cite_note-jim-137"> Jimson weed leaves are smoked for asthma.<wiki/List_of_medicinal_plants#cite_note-138">
  • Harmful effects: Jimson weed is poisonous and can cause dry mouth and extreme thirst, vision problems, nausea and vomiting, fast heart rate, hallucinations, high temperature, seizures, confusion, loss of consciousness, breathing problems, and death.<wiki/List_of_medicinal_plants#cite_note-jim-137"> "The deadly dose for adults is - grams of leaf or - grams of the seeds."<wiki/List_of_medicinal_plants#cite_note-jim-137">

Drimia maritima

  • Squill  (Drimia maritima)
  • Not enough research to evaluate efficacy for anything.<wiki/List_of_medicinal_plants#cite_note-squill-202"> Used for heart problems, bronchitis, asthma, whooping cough, and wounds.
  • Harmful effects: The herb is cardiotoxic and can be lethal, with side effects including stomach irritation, loss of appetite, diarrhea, vomiting, headache, vision changes, depression, confusion, hallucinations, irregular heartbeat, skin rash, miscarriages, seizures, life-threatening abnormal heart rhythms, and death.<wiki/List_of_medicinal_plants#cite_note-squill-202">



Dionaea muscipula

  • Venus fly-trap  (Dionaea muscipula)
  • Active ingredient plumbagin, claimed to boost the immune system
  • Harmful effects: Possible side effects of plumbagin are diarrhea, skin rash, liver damage, and abnormal blood counts.<wiki/List_of_medicinal_plants#cite_note-211"> Plumbagin is mutagenic to Escherichia coli.<wiki/List_of_medicinal_plants#cite_note-212">


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