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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Orobanchaceae
Tribus: Pedicularideae
Genus: Orthocarpus
Species: O. barbatus – O. bracteosus – O. cuspidatus – O. imbricatus – O. luteus – O. pachystachyus – O. purpureoalbus – O. tenuifolius – O. tolmiei

Orthocarpus Nutt. Gen. N. Amer. Pl. 2: 56–58. (1818)
Type species: Orthocarpus luteus Nutt. Gen. N. Amer. Pl. 2: 56–58. (1818)


Nuttall, T. (1818) The Genera of North American Plants 2: 56–58.
Tank, D.C., Egger, J.M., & Olmstead, R. G. (2009) Phylogenetic Classification of Subtribe Castillejinae (Orobanchaceae), Systematic Botany, 34(1): 182–197. Available on line [1]. Accessed 1 March 2014.
The Plant List 2013. Orthocarpus in The Plant List Version 1.1. Published on the internet. Accessed: 2014 Feb. 12. 2014. Orthocarpus. Missouri Botanical Garden. Published on the internet. Accessed: 2014 Feb. 28.
International Plant Names Index. 2014. Orthocarpus. Published online. Accessed: Feb. 28 2014.

Orthocarpus, or owl's-clover,[1] is a genus of flowering plants in the family Orobanchaceae. 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 30 centimetres (1 ft) in height.[2]

Some animal species such as the Edith's checkerspot butterfly use these plants as hosts during ovipositing.[3]

Species include:

Orthocarpus bracteosus Benth.
Orthocarpus cuspidatus Greene
Orthocarpus holmgreniorum (T.I. Chuang & Heckard) L. M. Shultz & F. J. Smith
Orthocarpus imbricatus Torr. ex S.Watson
Orthocarpus luteus Nutt.
Orthocarpus pachystachyus A.Gray
Orthocarpus tenuifolius (Pursh) Benth.
Orthocarpus tolmiei Hook. & Arn.


"{{{taxon}}}". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 25 July 2015.
Taylor, Ronald J. (1994) [1992]. Sagebrush Country: A Wildflower Sanctuary (rev. ed.). Missoula, MT: Mountain Press Pub. Co. p. 60. ISBN 0-87842-280-3. OCLC 25708726.

Murphy; Launer, Ehrlich (1983). "The Role of Adult Feeding in Egg Production and Population Dynamics of the Checkerspot Butterfly Euphydryas editha". Oecologia. 56 (2): 257–263. doi:10.1007/bf00379699. PMID 28310203.

"Genus: Orthocarpus Nutt". Germplasm Resources Information Network (GRIN). United States Department of Agriculture, Agricultural Research Service, Beltsville Area. Retrieved 2008-03-01.

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