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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: Lamiaceae
Subfamilia: Nepetoideae
Tribus: Elsholtzieae
Genus: Collinsonia
Species: C. anisata – C. australis – C. canadensis – C. elsholtzioides – C. glandulosa – C. japonica – C. macrobracteata – C. punctata – C. sinensis – C. szechuanensis – C. verticillata


Collinsonia L., Sp. Pl.: 28 (1753).

Type species: C. canadensis L.


Diallosteira Raf., Neogenyt. 2 (1825).
Type species: D. punctata Raf., nom. inval.
Hypogon Raf., Fl. Ludov. 41 (1817).
Type species: H. anisatus (Sims) Raf.
Keiskea Miq., Ann. Mus. Bot. Lugduno-Batavi. 2: 105 (1865).
Type species: K. japonica Miq.
Micheliella Briq. in Engl. & Prantl, Nat. Pflanzenf. 4(3a): 325 (1897).
Type species: non design.
Pleuradenia Raf., Neogenyt. 2 (1825).
Type species: non design.

Native distribution areas:

Continental: Asia-Temperate
Regional: China
China South-Central, China Southeast.
Regional: Eastern Asia
Japan, Taiwan.
Continental: Northern America
Regional: Eastern Canada
Regional: North-Central U.S.A.
Illinois, Kansas (doubtfully present), Missouri, Wisconsin (extinct).
Regional: Northeastern U.S.A.
Connecticut, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia.
Regional: Southeastern U.S.A.
Alabama, Arkansas (doubtfully present), Delaware, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Linnaeus, C. 1753. Species Plantarum. Tomus I: 28. Reference page.

Additional references

Peirson, J.A., Cantino, P.D. & Ballard, H.E. 2006. A Taxonomic Revision of Collinsonia (Lamiaceae) Based on Phenetic Analyses of Morphological Variation. Systematic Botany 31(2): 398–409. DOI: 10.1600/036364406777585838 JSTOR ResearchGate Reference page.
Hong, S-P. 2007. Pollen morphology and its systematic implications for the genera Keiskea miq. and Collinsonia L. (Elsholtzieae-Lamiaceae). Journal of Plant Biology 50 (5): 533–539. DOI: 10.1007/BF03030706. Supports the separation of these two genera purely on grounds of pollen morphology.


Govaerts, R. et al. 2014. Collinsonia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2014 June 21. Reference page. 2014. Collinsonia. Missouri Botanical Garden. Published online. Accessed: 21 June 2014.
International Plant Names Index. 2014. Collinsonia. Published online. Accessed: June 21 2014.

Vernacular names
English: Horsebalm

Collinsonia is a genus of flowering plants in the family Lamiaceae. It is native to East Asia and eastern North America.[1][2][3][4] It was named for the English botanist Peter Collinson (1694–1768) by Carl Linnaeus in Species Plantarum in 1753.[5] It is in the tribe Elsholtzieae, a small tribe of only 5 genera.[6] In order of their number of species, they are Elsholtzia, Mosla, Collinsonia, Perilla, and Perillula.

The circumscription of species in Collinsonia has been a source of confusion, and many names have been published.[7] Some authors have recognized as many as 10 species. In 2006, the genus was revised with only four species recognized.[8] The following list of species follows the World Checklist from Kew Gardens in London.

Collinsonia anisata Sims - Alabama, Mississippi, Florida, Georgia
Collinsonia australis (C.Y.Wu & H.W.Li) Harley - Fujian, Guangdong
Collinsonia canadensis L. - Quebec, Ontario, eastern United States
Collinsonia elsholtzioides (Merr.) Harley - Anhui, Guangdong, Hubei, Hunan, Jiangxi, Zhejiang
Collinsonia glandulosa (C.Y.Wu) Harley - Fujian
Collinsonia japonica (Miq.) Harley - Japan
Collinsonia macrobracteata (Masam.) Harley - Taiwan
Collinsonia punctata Elliott - southeastern United States from Louisiana to North Carolina
Collinsonia sinensis (Diels) Harley - Anhui, Jiangsu, Zhejiang
Collinsonia szechuanensis (C.Y.Wu) Harley - Sichuan, Yunnan
Collinsonia verticillata Baldwin ex Elliott - eastern United States from Ohio and Virginia south to Alabama


Kew World Checklist of Selected Plant Families
Flora of China Vol. 17 Page 257 香简草属 xiang jian cao shu Keiskea Miquel, Ann. Mus. Bot. Lugduno-Batavi. 2: 105. 1865.
Biota of North America Program, 2013 county distribution maps
Alan S. Weakley. "Collinsonia" page 745. In: Flora of the Carolinas, Virginia, and Georgia (title varying with update). (see External links below).
Umberto Quattrocchi. 2000. CRC World Dictionary of Plant Names volume I. CRC Press: Boca Raton; New York; Washington,DC;, USA. London, UK. ISBN 978-0-8493-2675-2.
Raymond M. Harley, Sandy Atkins, Andrey L. Budantsev, Philip D. Cantino, Barry J. Conn, Renée J. Grayer, Madeline M. Harley, Rogier P.J. de Kok, Tatyana V. Krestovskaja, Ramón Morales, Alan J. Paton, and P. Olof Ryding. 2004. "Labiatae" pages 167-275. In: Klaus Kubitzki (editor) and Joachim W. Kadereit (volume editor). The Families and Genera of Vascular Plants volume VII. Springer-Verlag: Berlin; Heidelberg, Germany. ISBN 978-3-540-40593-1
Collinsonia At: International Plant Names Index. (see External links below)
Jess A. Peirson, Philip D. Cantino, and Harvey E. Ballard Jr. 2006. "A Taxonomic Revision of Collinsonia (Lamiaceae) Based on Phenetic Analyses of Morphological Variation". Systematic Botany 31(2):398-409. doi:10.1600/036364406777585838

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