DC:30 Roll:13 Skill:2
Total: 15
Survival failure - You can't find any useable leaves
However, the char has 32 points in survival.
Wrong skill roll in the background or wrong skill stated in the text? I was looking for another weed elsewhere but it had been recently gathered so can't say if this was just one instance.
Screen capture: First one was the ragweed, second one was the aloe.

Addition: Same thing with the Regweed on the area 'East of The River Chionthar'. Survival is failure and says the skill is 2 even though it is actually 33 so must be picking another skill instead of survival. Stonelike shrub asks for alchemy and that is picked correctly.