This quest is not available in game.
Lauranna Thar'well wants you to go to the Botanica in Tempest Keep and retrieve the Botanist's Field Guide from High Botanist Freywinn. In addition she also wants you to bring her 5 Super Healing Potions, 5 Super Mana Potions and 5 Major Dreamless Sleep Potions.
*WARNING!* You can only select one alchemy specialization.
As you know, plants have properties that allow alchemists to re-energize and reinvigorate others through potions.
My familiarity with the plants of Outland allows me to teach alchemists how to make the most out of them. If you're interested in expanding your knowledge of potions, I have but one task to ask of you.
High Botanist Freywinn in Tempest Keep is rumored to have written a comprehensive botany guide. Bring it to me along with samples of your work and I'll teach you the knowledge you seek.