Eriogonum siskiyouense
 Eriogonum siskiyouense is a rare species of wild buckwheat known by the common name Siskiyou buckwheat. It is endemic to the southern Klamath Mountains of far northern California where it is known only from the area between Mount Eddy and the Scott Mountains around the border between Siskiyou and Trinity Counties. It is a member of the local serpentine soils flora.