Biology:List of Dahlia species

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There are 42 accepted species of flowering plants in the genus Dahlia, according to The Plant List.[1] The sectional classification of Dahlia sensu Sørensen (1969)[2] as updated by Saar et al. (2003)[3] and Hansen (2004)[4] and (2008)[5] is as follows (excluding infraspecific taxa);

Section Pseudodendron Sherff

Image Scientific Name Chromosome Count Distribution
Dahlia campanulata Saar- Sorenson & Hjert.- Acta Bot. Mex. 64- 20 (-22- fig. 1) (2003) 20211114 122056.jpg D. campanulata Saar, Sørensen, & Hjerting 2n = 32 Mexico (Guerrero and Oaxaca)
木莖大理菊 Dahlia excelsa -墨爾本植物園 Royal Botanic Gardens, Melbourne- (9198130473).jpg D. excelsa Bentham 2n = 32 Mexico
Dahlia imperialis (aussiegall) 001.jpg D. imperialis Rozel ex Ortgies 2n = 32 Mexico, Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, Panama and south into Colombia and Ecuador
TENUICAULISweb.jpg D. tenuicaulis Sørensen 2n = 32 Mexico (Oaxaca, Jalisco, Michoacan)

Section Entemophyllon Sørensen

Image Scientific Name Chromosome Count Distribution
D. congestifolia Sørensen 2n = 34[6] Mexico (Hidalgo)
Dahlia dissecta kz1.jpg D. dissecta S. Watson 2n = 34 Mexico (Tamaulipas)
D. foeniculifolia Sherff 2n = 34 Mexico (Nuevo León, Tamaulipas)
D. linearis Sherff 2n = 34 Mexico ( Guanajuato, Querétaro)
D. rupicola Sørensen 2n = 34 Mexico (Durango)
D. scapigeroides Sherff 2n = 34[6] Mexico (Guanajuato, Hidalgo, Querétaro)
D. sublignosa (Sørensen) Saar & Sørensen[7][8] 2n = 34 Mexico (Tamaulipas)

Section Dahlia Sherff

Subsection Image Scientific Name Chromosome Count Distribution
Subsection Dahlia D. apiculata (Sherff) Sørensen 2n = 32[6] Mexico (Oaxaca, Puebla )
D. atropurpurea Sørensen 2n = 64[6] Mexico (Guerrero)
D. australis (Sherff) Sørensen 2n = 32 or 64[6] Mexico (Chiapas, Oaxaca, Michoacan), Guatemala
D. barkeriae Knowles and Westcott 2n = 64[6] Mexico (Jalisco, Michoacán)
D. brevis Sørensen 2n = 32[6]
Dahlia coccinea, the Red Dahlia (9450014546).jpg D. coccinea Cavanilles 2n = 32 or 64[6] Mexico
D. cordifolia (Sessé & Moc.) McVaugh 2n = 32[6] Mexico (Michoacán)
D. cuspidata Saar, Sørensen, & Hjerting Mexico (Guerrero )
D. hintonii Sherff Mexico (Guerrero )
D. hjertingii Hansen and Sørensen Mexico (Hidalgo)
D. mollis Sørensen 2n = 32[6] Mexico (Hidalgo, Guanajuato, Querétaro)
D. moorei Sherff Mexico (Hidalgo, Querétaro)
D. neglecta Saar Mexico Hidalgo, Guanajuato, Querétaro, Veracruz)
D. parvibracteata Saar & Sørensen Mexico ( Jalisco)
D. pteropoda Sherff 2n = 64[6] Mexico ( Puebla, Oaxaca)
D. purpusii Brandg. Mexico (Chiapas)
D. rudis Sørensen 2n = 32 Mexico (Distrito Federal, México, Michoacán)
Dahlia sherffii (peganum) 001.jpg D. sherffii Sørensen 2n = 32 or 64[6] Mexico (Chihuahua, Durango, Sinaloa, Jalisco)
D. scapigera (A. Dietrich) Knowles & Westcott 2n = 32[6] Mexico (Distrito Federal, Michoacán, Guanajuato, Hidalgo)
D. sorensenii Hansen & Hjerting 2n = 64[6] Mexico (Distrito Federal, Michoacán, Hidalgo)
D. spectabilis Saar, Sørensen, & Hjerting Mexico (San Luis PotosÍ)
D. tamaulipana J.Reyes, Islas & Art.Castro 2n = 32[9] Mexico (Tamaulipas)
D. tenuis Robinson & Greenman 2n = 32[6] Mexico (Oaxaca)
D. tubulata Sørensen 2n = 32[6] Mexico (Nuevo León, Tamaulipas, Coahuila)
D. wixarika Art.Castro, Carr.-Ortiz & Aarón Rodr. Mexico (Durango, Jalisco)
Subsection Merckii Sørensen Dahlia merckii-IMG 4644.jpg D. merckii Lehm. 2n = 36[6] Mexico ( Monterrey, Puebla, Nuevo León, Oaxaca)

Section Epiphytum Sherff

Image Scientific Name Chromosome Count Distribution
D. macdougallii Sherff 2n = 32 Mexico (Oaxaca)

Unresolved

    • D. pinnata Type (more properly D. × pinnata)[10] Most likely (= D. coccinea × D. sorensenii).[4]
    • D. mixtecana J. Reyes, Islas & Art.Castro (possibly Section Dahlia or Section Entemophyllon)[11]

See also

References

  1. ↑ The Plant List
  2. ↑ Sørensen, P. D. 1969. Revision of the genus Dahlia (Compositae, Heliantheae-Coreopsidinae). Rhodora 71: 309-365, 367-416.
  3. ↑ Dayle E. Saar, Neil O. Polans and Paul D. Sørensen. A Phylogenetic Analysis of the Genus Dahlia (Asteraceae) Based on Internal and External Transcribed Spacer Regions of Nuclear Ribosomal DNA. Systematic Botany Vol. 28, No. 3 (Jul. - Sep., 2003), pp. 627-639. Stable URL: https://www.jstor.org/stable/25063902
  4. ↑ 4.0 4.1 Hansen, H. V. (2004), Simplified keys to four sections with 34 species in the genus Dahlia (Asteraceae-Coreopsideae). Nordic Journal of Botany, 24: 549–553. doi: 10.1111/j.1756-1051.2004.tb01639.x
  5. ↑ Hans V. Hansen. Native (wild) Dahlias – taxonomy, historical review, and the derivation of cultivars, in Trial of Dahlia 2008, Final Report. Royal Horticultural Society
  6. ↑ 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 Schie, Stephan; Debener, Thomas (2013-02-05). "The generation of novel species hybrids between garden dahlias andDahlia macdougalliito increase the gene pool for variety breeding". Plant Breeding (Wiley) 132 (2): 224–228. doi:10.1111/pbr.12034. ISSN 0179-9541. 
  7. ↑ Dayle E. Saar and Paul D. Sørensen. SIDA, Contributions to Botany Vol. 21, No. 4 (21 December 2005), pp. 2161-2167
  8. ↑ Elevated from D. dissecta var. sublignosa but still listed as unresolved in The Plant List
  9. ↑ REYES-SANTIAGO, JERÓNIMO; ISLAS-LUNA, MARÍA DE LOS ÁNGELES; MACÍAS-FLORES, RAFAEL GUADALUPE; CASTRO-CASTRO, ARTURO (2018-05-15). "Dahlia tamaulipana (Asteraceae, Coreopsideae), a new species from the Sierra Madre Oriental biogeographic province in Mexico". Phytotaxa (Magnolia Press) 349 (3): 214. doi:10.11646/phytotaxa.349.3.2. ISSN 1179-3163. 
  10. ↑ Accepted name in The Plant List, but was not accepted by Saar (2003). Hansen, H. V. and J. P. Hierting. 1996. Observations on chromosome numbers and biosystematics in Dahlia (Asteraceae, Heliantheae) with an account on the identity of D. pinnata, D.rosea and D. coccinea. Nordic Journal of Botany 16: 445-455.
  11. ↑ Castro-Castro, Arturo; Munguía-Lino, Guadalupe; Islas-Luna, María De Los Ángeles; Reyes-Santiago, Jerónimo (2019-03-01). "Dahlia mixtecana (Asteraceae, Coreopsideae), a striking new species from Oaxaca, Mexico" (in en). Phytotaxa 394 (3): 209–218. doi:10.11646/phytotaxa.394.3.2. ISSN 1179-3163. 



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