Thornapple
Botanical name:
Datura stramonium
Synonyms:
Jimsonweed
Family:
Solanaceae, Nightshade family
Where to find this herb:
Origin: unclear. Now found all over the world except the arctic regions.
Part(s) used:
leaves, seeds
Special constituents:
Hyoscyamine, atropine, scopolamine; the seeds have the highest alkaloid content
Correspondance:
6, 31bis (Crowley), 21 (Beyerl)
Uses:
Flying ointment, visions
Doornappel 
Pigæble This pretty lady opens her flowers at nighttime and sends out a sweet scent. During the day the flowers are closed and the plant has an unpleasant smell. If you want to meet her magic, you have to stay up late - full moon nights are the best, of course.
You can also grow her in pots indoors. You know when it's bedtime - when she wakes up! If you grow her in your garden, she becomes quite a bush, so give her lots of room. There is a purple variety, Datura stramonium var. tatula (see picture above). It looks like the normal Thornapple, but the flowers has a touch of purple and the stems are purple. Very pretty - and very toxic.
Thornapple was used in earlier times as a narcotic. Like many other nightshades, it's a risky affair. Partly because of it's toxicity, partly because the effect differs from person to person. Nowadays it is only applied locally, in the eyes, to dilate the pupils. This effect has also been known and used by prostitutes to make their eyes appear bigger.
Thornapple is also one of the traditional ingredients in witches flying ointments. I have met a couple of modern witches who has experimented with this plant - all have their different opinion. Some say they get ill, throw up or bad trip on it. Others say it is useful in small doses for works on the astral plane. You can read a few reports on the use of Thornapple on Erowid . As with Henbane, I think it's best kept as a garden plant and nothing more.