Triphysaria is a genus of five plants in the family Orobanchaceae which are known generally as owl's-clovers.[1] This genus is closely related to the genera Castilleja and Orthocarpus. Triphysaria are native to western North America, including a species endemic to California.

Triphysaria eriantha.jpg
Triphysaria eriantha
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Orobanchaceae
Tribe: Pedicularideae
Genus: Triphysaria
Fisch. & C.A. Mey.

5, see text


These plants, like those in many other genera in the family, are facultative hemiparasites on other plants. They produce haustoria that tap into the roots of other plants to extract some of the nutrients they need.

The plants bear spike inflorescences of pouched, folded flowers that have lips shaped like the beak of an owl.



  1. ^ "Triphysaria". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 December 2015.

External linksEdit

Further readingEdit

  • Yoder, J. I. and D. S. Jamison. (2001). Heritable variation in quinone-induced haustorium development in the parasitic plant Triphysaria. Plant Physiology 125 1870
  • Torres M. J., Tomilov A. A., Tomilova N., Reagan R. L., Yoder J. I. 2005. Pscroph, a parasitic plant EST database enriched for parasite associated transcripts BMC Plant Biology 5:24 (16 November 2005)