Sideritis Leaves is an FFXIV crafting material gathered by the Botanist class, a Disciple of the Land. The tea produced from this plant is somewhat bitter but possesses incredible medicinal properties. It’s an ingredient used in a few Culinarian recipes.
You can find the material within Level 90 Lush Vegetation Patch to the west of Anagnorsis (X: 20.6, Y: 23.6) in the Philomythes Notos region of Elpis. Before you can acquire the resource from the node, you must first unlock the Botanist class. Then you need to be at least Level 86 before you can tap these nodes and acquire this material.
Inside the node, you’ll also find several other materials, including: