Genus of flowering plants belonging to the broomrape family
Orthocarpus, or owl's-clover, is a genus of flowering plants in the family Orobanchaceae (broomrapes). They are native to North America. A number of species formerly included in "Orthocarpus" have been transferred to the genus "Castilleja", which includes the plants commonly known as Indian paintbrush. Plants of the genus are generally less than in height.
Like their close relatives in genus "Castilleja", "Orthocarpus" are root hemiparasites, capable of photosynthesis but extracting water and mineral nutrients through attachment to the roots of host plants.
Some animal species such as the Edith's checkerspot butterfly use these plants as hosts during ovipositing.
Species.
As of March 2022[ [update]], Plants of the World Online accepted the following species:
References.
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