Search ingredients in the wild

[Bazaku Ambrosuis]

Suppose an alchemist goes through a forest and while passing by he search ingredients for his potions, after some hours off seeking he finds some usefull ingredients.
Could be this done to reduce the cost of potions created by him maybe making a survival or maybe perception check?
Im not saying anything particularly difficult to find but for example the materials needed to make potion of cure light wounds.
I didnt found if anywhere are the precise ingredients for each potion but i figure they arent.

[Milo v3]

I'd personally have the survival check function as a craft/profession check to get wealth, and gain that x gp in alchemy supplies. You could also use the downtime system to use your skills to find magical ingredients, generating "Magic" capital which you then expend to create your potions.