Encyclopedia of Medicinal Plants Uses and Identification



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.

  • 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. 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." "Even touching the plant with bare skin has been known to cause rashes, headache, and nausea."

Datura stramonium

  • Jimson weed  (Datura stramonium)
  • Used for: spasmodic coughing, chronic laryngitis, asthma; used as an aphrodisiac in South America
  • Insufficient evidence to evaluate efficacy. Jimson weed leaves are smoked for asthma.
  • 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. "The deadly dose for adults is - grams of leaf or - grams of the seeds."

Drimia maritima

  • Squill  (Drimia maritima)
  • Not enough research to evaluate efficacy for anything. 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.



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. Plumbagin is mutagenic to Escherichia coli.