List of Dahlia species explained
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
| Image | Scientific Name | Chromosome Count | Distribution |
|---|
| D. campanulata | 2n = 32 | Mexico (Guerrero and Oaxaca) |
| D. excelsa | 2n = 32 | Mexico |
| D. imperialis | 2n = 32 | Mexico, Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, Panama and south into Colombia and Ecuador |
| D. tenuicaulis | 2n = 32 | Mexico (Oaxaca, Jalisco, Michoacan) |
|
Section Entemophyllon
| Image | Scientific Name | Chromosome Count | Distribution |
|---|
| D. congestifolia | 2n = 34[6] | Mexico (Hidalgo) |
| D. dissecta | 2n = 34 | Mexico (Tamaulipas) |
| D. foeniculifolia | 2n = 34 | Mexico (Nuevo León, Tamaulipas) |
| D. linearis | 2n = 34 | Mexico (Guanajuato, Querétaro) |
| D. rupicola | 2n = 34 | Mexico (Durango) |
| D. scapigeroides | 2n = 34 | Mexico (Guanajuato, Hidalgo, Querétaro) |
| D. sublignosa [7] [8] | 2n = 34 | Mexico (Tamaulipas) |
|
Section Dahlia
| Subsection | Image | Scientific Name | Chromosome Count | Distribution |
|---|
| Subsection Dahlia | | D. apiculata | 2n = 32 | Mexico (Oaxaca, Puebla) |
|---|
| D. atropurpurea | 2n = 64 | Mexico (Guerrero) |
| D. australis | 2n = 32 or 64 | Mexico (Chiapas, Oaxaca, Michoacan), Guatemala |
| D. barkeriae | 2n = 64 | Mexico (Jalisco, Michoacán) |
| D. brevis | 2n = 32 | |
| D. coccinea | 2n = 32 or 64 | Mexico |
| D. cordifolia | 2n = 32 | Mexico (Michoacán) |
| D. cuspidata | | Mexico (Guerrero) |
| D. hintonii | | Mexico (Guerrero) |
| D. hjertingii | | Mexico (Hidalgo) |
| D. mollis | 2n = 32 | Mexico (Hidalgo, Guanajuato, Querétaro) |
| D. moorei | | Mexico (Hidalgo, Querétaro) |
| D. neglecta | | Mexico Hidalgo, Guanajuato, Querétaro, Veracruz) |
| D. parvibracteata | | Mexico (Jalisco) |
| D. pteropoda | 2n = 64 | Mexico (Puebla, Oaxaca) |
| D. purpusii | | Mexico (Chiapas) |
| D. rudis | 2n = 32 | Mexico (Distrito Federal, México, Michoacán) |
| D. sherffii | 2n = 32 or 64 | Mexico (Chihuahua, Durango, Sinaloa, Jalisco) |
| D. scapigera | 2n = 32 | Mexico (Distrito Federal, Michoacán, Guanajuato, Hidalgo) |
| D. sorensenii | 2n = 64 | Mexico (Distrito Federal, Michoacán, Hidalgo) |
| D. spectabilis | | Mexico (San Luis PotosÍ) |
| D. tamaulipana | 2n = 32[9] | Mexico (Tamaulipas) |
| D. tenuis | 2n = 32 | Mexico (Oaxaca) |
| D. tubulata | 2n = 32 | Mexico (Nuevo León, Tamaulipas, Coahuila) |
| D. wixarika | | Mexico (Durango, Jalisco) |
| Subsection Merckii | | D. merckii | 2n = 36 | Mexico (Monterrey, Puebla, Nuevo León, Oaxaca) |
|---|
|
Unresolved
- D. pinnata Type (more properly D. × pinnata)[10] Most likely (= D. coccinea × D. sorensenii).[4]
- D. mixtecana (possibly Section Dahlia or Section Entemophyllon)[11]
See also
Notes and References
- http://www.theplantlist.org/1.1/browse/A/Compositae/Dahlia/ The Plant List
- https://archive.org/stream/mobot31753003413934/mobot31753003413934_djvu.txt Sørensen, P. D. 1969. Revision of the genus Dahlia (Compositae, Heliantheae-Coreopsidinae). Rhodora 71: 309-365, 367-416.
- http://www.bioone.org/doi/abs/10.1043/01-78.1 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
- http://onlinelibrary.wiley.com/doi/10.1111/j.1756-1051.2004.tb01639.x/abstract 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
- http://apps.rhs.org.uk/planttrials/TrialReports/Dahlia%202008.pdf Hans V. Hansen. Native (wild) Dahlias – taxonomy, historical review, and the derivation of cultivars, in Trial of Dahlia 2008, Final Report. Royal Horticultural Society
- Schie . Stephan . Debener . Thomas . The generation of novel species hybrids between garden dahlias andDahlia macdougalliito increase the gene pool for variety breeding . Plant Breeding . Wiley . 132 . 2 . 2013-02-05 . 0179-9541 . 10.1111/pbr.12034 . 224–228.
- https://www.jstor.org/stable/41968512 Dayle E. Saar and Paul D. Sørensen. SIDA, Contributions to Botany Vol. 21, No. 4 (21 December 2005), pp. 2161-2167
- Elevated from D. dissecta var. sublignosa but still listed as unresolved in The Plant List
- REYES-SANTIAGO . JERÓNIMO . ISLAS-LUNA . MARÍA DE LOS ÁNGELES . MACÍAS-FLORES . RAFAEL GUADALUPE . CASTRO-CASTRO . ARTURO . Dahlia tamaulipana (Asteraceae, Coreopsideae), a new species from the Sierra Madre Oriental biogeographic province in Mexico . Phytotaxa . Magnolia Press . 349 . 3 . 2018-05-15 . 1179-3163 . 10.11646/phytotaxa.349.3.2 . 214.
- 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.
- 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 . Phytotaxa . en . 394 . 3 . 209–218 . 10.11646/phytotaxa.394.3.2 . 91968889 . 1179-3163.
