rosmary

Rosemary is an Acetylcholinesterase inhibitors,
meaning that your attention stays focused,
which can explain some of it's magical effects.

for instance perhaps even the smell might be effective,
thereby people would have a lasting impression of you,
same thing for studying, if you consume it,
then you'll be able to focus on your studying more.

though make sure to take some while studying,
so that it maintains the focus you have.

Note that you must take breaks from the herb,
to allow your focus to move to other things.

also the actual attention hormone acetcholine,
requires choline and pantheotic acid,
in order to successfully be created.
while some is available in vegetables,
i recommend getting a supplement,
for any serious concentrators.

Rosemary has also been used forany centuries in medicines and antifungals the Egyptians once thought it very valuable for getting rid if dark creatures and demons hope this helped :)

In the language of flowers it means remembrance ;'3

Rosemary has many uses in magick, it is a herb that has a lot of different properties.

Heres a link for a herb page full of herbs and their magickal properties, click on 'R' at the top and look for Rosemary.

http://labyrinth.net.au/~obsidian/bos-herblist.html#r