Biology:Psilactis
| Psilactis | |
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| Psilactis asteroides, Otero County, New Mexico | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Astereae |
| Subtribe: | Symphyotrichinae |
| Genus: | Psilactis A.Gray |
| Type species | |
| Psilactis asteroides[2][3] A.Gray
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| Species[1] | |
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| Synonyms[4] | |
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Psilactis is a genus of North American and South American plants in the tribe Astereae within the family Asteraceae which are known by the common name tansyaster.[5] There are six species within the genus.
Taxonomy
The genus contains six species: Psilactis asteroides, Psilactis brevilingulata, Psilactis gentryi, Psilactis heterocarpa, Psilactis odysseus, and Psilactis tenuis.[1] Formerly included in the genus were Psilactis coulteri and Psilactis crispa which are now placed in genus Leucosyris as L. coulteri[6] and L. crispa,[7] respectively. Additionally, Psilactis lepta has been determined to be a taxonymic synonym of Psilactis asteroides.[8]
P. asteroides
P. brevilingulata
P. gentryi
P. heterocarpa
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Distribution
Five species within the genus have native distribution in Mexico. Psilactis heterocarpa is restricted to Texas in the United States with no Mexican distribution.[9] P. odysseus is restricted to the Mexican states Nuevo León and Tamaulipas,[10] and the other four species, P. asteroides,[11] P. brevilingulata,[12] P. gentryi,[13] and P. tenuis[14] have distributions in both Mexico and the United States. P. brevilingulata has an additional presence in Colombia and Peru.[12]
Citations
- ↑ 1.0 1.1 1.2 POWO 2021.
- ↑ Lectotype designated by Pfeiffer, L.K.G. 1874. Nomenclator Botanicus 2(2): 857.
- ↑ Tropicos, Psilactis A. Gray
- ↑ Morgan 2006.
- ↑ USDA 2014.
- ↑ POWO 2021, Psilactis coulteri A.Gray.
- ↑ POWO 2021, Psilactis crispa Brandegee.
- ↑ POWO 2021, Psilactis lepta Shinners.
- ↑ Hassler 2021, Psilactis heterocarpa (R. L. Hartm. & M. A. Lane) D. R. Morgan.
- ↑ Hassler 2021, Psilactis odysseus (G. L. Nesom) D. R. Morgan.
- ↑ Hassler 2021, Psilactis asteroides A. Gray.
- ↑ 12.0 12.1 Hassler 2021, Psilactis brevilingulata Sch. Bip. ex Hemsl..
- ↑ Hassler 2021, Psilactis gentryi (Standl.) D. R. Morgan.
- ↑ Hassler 2021, Psilactis tenuis S. Watson.
References
- Morgan, D.R. (2006), "Psilactis", in Flora of North America Editorial Committee, Flora of North America North of Mexico (FNA), 20, New York and Oxford, http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=127321, retrieved 22 September 2021
- Hassler, M. (2021). "Psilactis A. Gray". doi:10.48580/d4sd-3dd. https://www.catalogueoflife.org/data/taxon/746T.
- "Psilactis A.Gray". Royal Botanic Gardens, Kew. 2021. http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:329886-2.
- "Psilactis". Natural Resources Conservation Service PLANTS Database. USDA. 2014. https://plants.usda.gov/core/profile?symbol=PSILA2.
Wikidata ☰ Q7255799 entry
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