Geocaulon

Geocaulon is a monotypic genus of flowering plants in the family Santalaceae containing the single species Geocaulon lividum, which is known by the common names northern comandra and false toadflax. It is native to northern North America, where it is common and widespread from Alaska to Newfoundland and into the northernmost contiguous United States.

This plant is a perennial herb which grows from rhizomes located in the humus. It produces stems up to tall and inflorescences with two or three greenish or purplish flowers, one of which is generally perfect while the others are male. The fruit is an orange drupe containing one seed. This plant grows as a hemiparasite on other species. It produces haustoria which tap the roots of host plants such as spruce, pine, birch, willow, alder, and twinflower.