Pelgrin trees are the generic name given to a common result of the mutagens in Terran Terraforming Probes interacting with a pre-existing biosphere containing high soil magnesium. These trees tend to be tall, willowy and a pale brown or white in colour, with golden yellow leaves.

The bark of Pelgrin trees has a neuro-active effect that quickly refreshes and re-energises the minds of those who consume its extract. Although the extract is relatively simple to produce, it spoils very quickly in air and must be made up by a scientist fresh for each application.

Pelgrin Bark Extract is a type of Exotic Biotic - an Exotic Substance related to Life Science. A physrep of a vial of bark or wood chips can be used to represent a few measures of this substance, but particularly large physreps can hold more. Please do not damage the trees on the sites we are using to hold events.

When applied to a character, a measure of Pelgrin Bark Extract restores one lost Psi Point or Will Point.

As with all Exotic Substances, a character with at least 1 rank in the relevant speciality (Life Science in this case) can spend 1 minute of appropriate roleplaying to apply 1 measure of Pelgrin Bark Extract to a character. Tear the Pelgrin Bark Extract card in two to show that it has been used. As Pelgrin Bark Extract does not use a sticker, it does not override any Exotic Substance that is already affecting the target character.