Hedeoma

Hedeoma is a genus of flowering plants in the mint family, Lamiaceae. It is native to North and South America. They are commonly known as false pennyroyals.

The genus name is derived from the Greek 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.


 * Species
 * 1) Hedeoma acinoides  Scheele – Slender false pennyroyal - Texas, Oklahoma, Coahuila
 * 2) Hedeoma apiculata W.S.Stewart – McKittrick's false pennyroyal - western Texas, southeastern New Mexico
 * 3) Hedeoma bella (Epling) R.S.Irving - Jalisco
 * 4) Hedeoma chihuahuensis (Henrard) B.L.Turner - Chihuahua
 * 5) Hedeoma ciliolata (Epling & W.S.Stewart) R.S.Irving - Gypsum false pennyroyal - Nuevo León
 * 6) Hedeoma costata Hemsl. – Ribbed false pennyroyal - Mexico, Guatemala, Texas, Arizona, New Mexico
 * 7) Hedeoma crenata R.S.Irving - Rio de Janeiro
 * 8) Hedeoma dentata Torr. – Dentate false pennyroyal - Arizona, Sonora, New Mexico
 * 9) Hedeoma diffusa Greene – Spreading (or Flagstaff) false pennyroyal - Nevada, Arizona
 * 10) Hedeoma drummondii Benth. – Drummond's false pennyroyal - western United States, Alabama, Mississippi, Nuevo León, Coahuila, Chihuahua, Sonora
 * 11) Hedeoma floribunda Standl. - Chihuahua
 * 12) Hedeoma hispida Pursh – Rough false pennyroyal - Canada, central + eastern United States (especially the Great Plains)
 * 13) Hedeoma hyssopifolia A.Gray – Aromatic false pennyroyal - northern Mexico, New Mexico, Arizona
 * 14) Hedeoma johnstonii R.S.Irving - Coahuila
 * 15) Hedeoma jucunda Greene - Durango
 * 16) Hedeoma mandoniana Wedd. - Peru, Bolivia, Jujuy Province of Argentina
 * 17) Hedeoma martirensis Moran - Baja California
 * 18) Hedeoma matomianum Moran - Baja California
 * 19) Hedeoma medium Epling - Argentina, Uruguay
 * 20) Hedeoma microphylla R.S.Irving - San Luis Potosí
 * 21) Hedeoma mollis Torr. – Softhair false pennyroyal - western Texas
 * 22) Hedeoma montana Brandegee - Coahuila
 * 23) Hedeoma multiflora Benth - Argentina, Uruguay, southern Brazil
 * 24) Hedeoma nana (Torr.) Briq. – Dwarf false pennyroyal - Chihuahua, Texas, New Mexico, Arizona, Utah, Nevada, Mohave Desert in California
 * 25) Hedeoma oblatifolia Villarreal - Coahuila
 * 26) Hedeoma oblongifolia (A.Gray) A.Heller – Oblongleaf false pennyroyal - Chihuahua, Sonora, New Mexico, Arizona
 * 27) Hedeoma palmeri Hemsl. - San Luis Potosí, Nuevo León, Coahuila
 * 28) Hedeoma patens M.E. Jones –oregano chiquito - Chihuahua, Coahuila
 * 29) Hedeoma patrina W.S.Stewart - Zacatecas
 * 30) †Hedeoma pilosa R.S.Irving – Old blue false pennyroyal - Brewster County in Texas but apparently extinct
 * 31) Hedeoma piperita Benth. - Hidalgo, México State
 * 32) Hedeoma plicata Torr. – Veiny false pennyroyal - Texas, Arizona, New Mexico, northern Mexico
 * 33) Hedeoma polygalifolia Benth. - southern Brazil
 * 34) Hedeoma pulcherrima Wooton & Standl. – White Mountain false pennyroyal - New Mexico
 * 35) Hedeoma pulegioides (L.) Pers. – American false pennyroyal - eastern Canada, central + eastern United States
 * 36) Hedeoma pusilla (R.S.Irving) R.S.Irving - Nuevo León
 * 37) Hedeoma quercetora Epling - Nuevo León
 * 38) Hedeoma reverchonii (A.Gray) A.Gray – Reverchon's false pennyroyal - southern Great Plains (Texas, Oklahoma, western Arkansas)
 * 39) Hedeoma rzedowskii B.L.Turner - Aguascalientes, San Luis Potosí
 * 40) Hedeoma × serpyllifolia Small - Texas, New Mexico
 * 41) Hedeoma tenuiflora Brandegee - Baja California
 * 42) Hedeoma tenuipes Epling - northeastern Mexico
 * 43) Hedeoma todsenii R.S.Irving – Todsen's false pennyroyal  - New Mexico

Formerly placed here

 * Clinopodium glabrum (Nutt.) Kuntze (as H. arkansana Nutt. )
 * Poliomintha incana (Torr.) A.Gray (as H. incana Torr. )