Biology:Bartonia paniculata
| Bartonia paniculata | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Gentianaceae |
| Genus: | Bartonia |
| Species: | B. paniculata
|
| Binomial name | |
| Bartonia paniculata (Michx.) Muhl.
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| Subspecies[2] | |
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Bartonia paniculata, commonly known as twining screwstem, is a saprophytic, annual or biennial species that grows in acidic, sandy-peaty wetlands.[1]
Distribution
Bartonia paniculata is the northernmost-ranging species in the genus Bartonia.[3] It is found along the Atlantic coastal plain; its widespread range crosses 29 American states and five Canadian provinces, and overlaps with that of Bartonia virginica.[3][4] The subspecies texana is found in eastern Texas and northeastern Louisiana; it was previously identified as Bartonia texana.[2]
Conservation
Twining screwstem is legally protected in the state of Michigan as a threatened species.[5]
Populations of the subspecies texana have declined by 50% over the past 57 years.[6] It is found within the baygalls of the coastal plain forests of southeastern Texas. As the baygalls have become rarer as a plant community, the texana subpopulation has also declined.[6]
References
- ↑ 1.0 1.1 "NatureServe Explorer 2.0". https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.147579/Bartonia_paniculata.
- ↑ 2.0 2.1 "Bartonia paniculata (Michx.) Muhl. | Plants of the World Online | Kew Science" (in en). https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:1119316-2#children.
- ↑ 3.0 3.1 Mathews, Katherine G.; Dunne, Niall; York, Emily; Struwe, Lena (2009-03-01). "A Phylogenetic Analysis and Taxonomic Revision of Bartonia (Gentianaceae: Gentianeae), Based on Molecular and Morphological Evidence" (in en). Systematic Botany 34 (1): 162–172. doi:10.1600/036364409787602320. ISSN 0363-6445. https://www.ingentaconnect.com/content/10.1600/036364409787602320.
- ↑ Hill, Steven (28 January 2003). "Conservation assessment for twining screwstem (Bartonia paniculata (Michx.) Muhl.).". Center for Biodiversity Technical Report 2003 7. https://www.ideals.illinois.edu/items/10353/bitstreams/37879/object.
- ↑ "Bartonia paniculata (Panicled screwstem) - Michigan Natural Features Inventory". https://mnfi.anr.msu.edu/species/description/14237/Bartonia-paniculata.
- ↑ 6.0 6.1 Chahal, Sharandeep S. (December 2023). Ecology of rare North American plant species Bartonia paniculata subsp. texana and Platanthera cooperi (Thesis). Texas Tech University. Retrieved 8 January 2025.
Wikidata ☰ Q15607590 entry
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