Hedeoma is a genus of in the mint family, Lamiaceae. It is native to North America and South America. They are commonly known as false pennyroyals.[ Kew World Checklist of Selected Plant Families][ Biota of North America Program 2013 county distribution maps]
The genus name is derived from the Greek language words ἡδύς ( hedys), meaning "sweet," and ὀσμή ( osme), meaning "odour". It refers to the scent of the leaves. Hedeoma patens M.E. Jones (common name, oregano chiquito) is used by natives of northwestern Mexico to flavor various food items.[Laferriere, Joseph E. 1991. Optimal use of ethnobotanical resources by the Mountain Pima of Chihuahua, Mexico. PhD dissertation, University of Arizona][Davidse, G., M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera. 2012. Rubiaceae a Verbenaceae. 4(2): i–xvi, 1–533. In G. Davidse, M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera (eds.) Flora Mesoamericana. Missouri Botanical Garden Press, St. Louis][Forzza, R. C. 2010. Lista de espécies Flora do Brasil . Jardim Botânico do Rio de Janeiro, Rio de Janeiro]
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Hedeoma acinoides Scheele – Slender false pennyroyal - Texas, Oklahoma, Coahuila
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Hedeoma apiculata W.S.Stewart – McKittrick's false pennyroyal - western Texas, southeastern New Mexico
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Hedeoma bella (Epling) R.S.Irving - Jalisco
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Hedeoma chihuahuensis (Henrard) B.L.Turner - Chihuahua
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Hedeoma ciliolata (Epling & W.S.Stewart) R.S.Irving - Gypsum false pennyroyal - Nuevo León
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Hedeoma costata Hemsl. – Ribbed false pennyroyal - Mexico, Guatemala, Texas, Arizona, New Mexico
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Hedeoma crenata R.S.Irving - Rio de Janeiro
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Hedeoma dentata Torr. – Dentate false pennyroyal - Arizona, Sonora, New Mexico
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Hedeoma diffusa Greene – Spreading (or Flagstaff) false pennyroyal - Nevada, Arizona
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Hedeoma drummondii Benth. – Drummond's false pennyroyal - western United States, Alabama, Mississippi, Nuevo León, Coahuila, Chihuahua, Sonora
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Hedeoma floribunda Standl. - Chihuahua
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Hedeoma hispida Pursh – Rough false pennyroyal - Canada, central + eastern United States (especially the Great Plains)
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Hedeoma hyssopifolia A.Gray – Aromatic false pennyroyal - northern Mexico, New Mexico, Arizona
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Hedeoma johnstonii R.S.Irving - Coahuila
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Hedeoma jucunda Greene - Durango
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Hedeoma mandoniana Wedd. - Peru, Bolivia, Jujuy Province of Argentina
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Hedeoma martirensis Moran - Baja California
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Hedeoma matomianum Moran - Baja California
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Hedeoma medium Epling - Argentina, Uruguay
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Hedeoma microphylla R.S.Irving - San Luis Potosí
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Hedeoma mollis Torr. – Softhair false pennyroyal - western Texas
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Hedeoma montana Brandegee - Coahuila
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Hedeoma multiflora Benth - Argentina, Uruguay, southern Brazil
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Hedeoma nana (Torr.) Briq. – Dwarf false pennyroyal - Chihuahua, Texas, New Mexico, Arizona, Utah, Nevada, Mohave Desert in California
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Hedeoma oblatifolia Villarreal - Coahuila
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Hedeoma oblongifolia (A.Gray) A.Heller – Oblongleaf false pennyroyal - Chihuahua, Sonora, New Mexico, Arizona
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Hedeoma palmeri Hemsl. - San Luis Potosí, Nuevo León, Coahuila
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Hedeoma patens M.E. Jones –oregano chiquito - Chihuahua, Coahuila
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Hedeoma patrina W.S.Stewart - Zacatecas
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† Hedeoma pilosa R.S.Irving – Old blue false pennyroyal - Brewster County in Texas but apparently extinct
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Hedeoma piperita Benth. - Hidalgo, México State
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Hedeoma plicata Torr. – Veiny false pennyroyal - Texas, Arizona, New Mexico, northern Mexico
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Hedeoma polygalifolia Benth. - southern Brazil
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Hedeoma pulcherrima Wooton & Standl. – White Mountain false pennyroyal - New Mexico
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Hedeoma pulegioides (L.) Pers. – American false pennyroyal - eastern Canada, central + eastern United States
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Hedeoma pusilla (R.S.Irving) R.S.Irving - Nuevo León
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Hedeoma quercetora Epling - Nuevo León
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Hedeoma reverchonii (A.Gray) A.Gray – Reverchon's false pennyroyal - southern Great Plains (Texas, Oklahoma, western Arkansas)
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Hedeoma rzedowskii B.L.Turner - Aguascalientes, San Luis Potosí
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Hedeoma × serpyllifolia Small - Texas, New Mexico
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Hedeoma tenuiflora Brandegee - Baja California
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Hedeoma tenuipes Epling - northeastern Mexico
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Hedeoma todsenii R.S.Irving – Todsen's false pennyroyal - New Mexico
Formerly placed here
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Clinopodium glabrum (Nutt.) Kuntze (as H. arkansana Nutt.)
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Poliomintha incana (Torr.) A.Gray (as H. incana Torr.)
External links