Mandrakes and The hand of glory

[Dysis]

No: HPFGUIDX 96075

--- In HPforGrownups at yahoogroups.com, "alshainofthenorth" 
<alshainofthenorth at y...> wrote:
> Mandrakes and the Hand of Glory have other things in common as 
well. 
> You obtain a Hand of Glory from the corpse of a hanged man, 
> preferentially a murderer, and the mandrake was said to sprout 
from 
> the ground beneath the gallows, out of the semen from the 
hanged.   

Dysis:
I just checked out some sites about the Hand of Glory, and it was 
mostly used by thieves. It was believed that if you lit the fingers 
of the Hand of Glory on fire, it would keep the household asleep and 
the thieves could then do their job. Mandrake roots are also used in 
sleeping porions, so there's another similarity between the two.

http://www.themystica.com/mystica/articles/h/hand_of_glory.html

But what really struck me as important was the fact that Mandrake 
root potions can heal a person from being possessed by evil spirits. 
Could Mandrake roots help Harry's occlumency?