Poison ivy, Herb.: Lesser Poison.
Spiders poison, depending on CR of spider.: Lesser/concentrated poison.
Serpent venom, greater spider poison: concentrated/greater poison.
Shadow creatures, varying from CR as to how many you use to create: Darkness.
Thistles, Herb: Catadrops.
(nameless), herb: A fickle plant that spreads its seeds by means of the wind, its seeds of noctious nature to avoid seed eating predators. Use: Choking powder.
Vampire hearts: +2 Regeneration for a short period.
Negative energy creatures, depending on CR: 1d4, 1d8, 1d12 negative damage, usable on weapon/throw'able, red glow.
Ghouls/Ghast/Agarat Stomachs: Varying in Dc according to CR, disease on hit. Throw'able usable on weapon after dilution and purification.
Wight, Barrow Wight, Slaughter Wight (unsure on what organ they use to feed, but that): Depending on CR to the Dc, level drain on hit, touch attack/throw'able.
Apparation, Wraith, Spectre: Fear, DC depending on CR.
More to come when i have the time.