check plant's from D&D OGL at sites like -
SRDlant Type - D&D Wiki - and ill put a list for you although these are fake. this list is from a post i put up in the lounge forum -
http://www.psychonaut.com/lounge/44246-d-d.html - if you've never played D&D you'd love it if your writing a fantasy novel, the way the dice help you tell the stories will surprise you on how much the randomness actually reflect's on the characters. A simple crit hit/miss can make your whole story much more interesting. but that's just my opinion and im not a writer soo you know ya dont gotta care for any of what i say. but im glad if this helps
Belladonna: This herb is used to relieve aches and pains, reduce
inflammation, relieve coughs or used as an anesthetic.
Feverfew: This herb can be used to induce sleep, reduce fevers,
and alleviate headaches or arthritis.
Garlic: This herb is effective at repelling vampires. It may be
used to treat bacterial infection, viral infection, fungal infection,
and intestinal parasites
Hollyhock: This herb can be used to treat burns, relieve itching,
and reduce inflammation. It may also be used to treat diarrhea
and intestinal parasites.
Rue: This herb may ward against demons or their worshippers.
It may also be used in a pain relieving poultice, or internally as a
relaxant or to treat cough or diarrhea.
Sage: This herb has diverse uses, including treatment of
bacterial or fungal infection, treatment of spasms, or to aid
powers of concentration. This herb may also be a component of
cleansing folk rituals.
Spiderwort: This herb may be used to treat poisonous stings or
bites. It is also used as a laxative or to treat kidney, stomach, or
other digestive problems.
Wolfsbane: This herb can be used to repel lycanthropes. It may
be used to treat inflammation and wounds.
Yarrow: This herb may be used as an antiseptic and antibiotic
or to treat illness. It can be used on wounds to help stop
bleeding.