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- Pityopsis_ruthii abstract "Pityopsis ruthii is a rare species of flowering plant in the aster family known by the common name Ruth's golden aster. It is endemic to the US state of Tennessee, where it is known only from Polk County. It is threatened by the modification of its habitat. It is a federally listed endangered species.This is a perennial herb growing 10 to 30 centimeters tall from a rhizome several centimeters in length. There are one to several erect, slender stems covered in silvery hairs. The basal leaves are lance-shaped and 3 or 4 centimeters long. Leaves on the stem are longer, overlapping, and silver-haired. The inflorescence is an array of several flower heads on hairy, glandular branches. Each head has nine to eighteen yellow ray florets.This plant grows in soil that has accumulated in the cracks of riverbank boulders on two Tennessee rivers, the Hiwassee and Ocoee Rivers. The rocks are subjected to periodic flooding when the river levels rise, submerging the plants and scouring the substrates they grow on. The plants grow in nearly full sunlight and cannot tolerate much shade. The flooding and scouring action of the river water prevents the growth of other plants that might shade it out. The plant is associated with Liatris microcephala (smallhead blazing star), which tolerates the same kind of habitat. Other plants located near the aster include Schizachyrium scoparium (little bluestem), Andropogon gerardi (big bluestem), Agalinis tenuifolia (slenderleaf false foxglove), Symphyotrichum dumosum (button aster), and Symphyotrichum undulatum (wavyleaf aster).This river plant is threatened by a number of processes that affect its environment. The stretches of river where it occurs are downstream from dams. The Apalachia Dam has eliminated the natural water regime in the Hiwassee River habitat. Water is now piped out of the river to a powerhouse and most of the flow comes from tributaries and runoff from surrounding hills. This stoppage of the normal river flow has allowed plants to move into the small patches of soil occupied by the aster, leading to competition and excessive shade. Troublesome competing plant species include Toxicodendron radicans (poison ivy), Parthenocissus quinquefolia (Virginia creeper), Vitis rotundifolia (wild grape), Campsis radicans (trumpet creeper), Lonicera japonica (Japanese honeysuckle), Lespedeza cuneata (lespedeza), and Microstegium vimineum (Nepal grass). Water is occasionally released from the dam when toxic pollution builds up and needs to be flushed out of the river. When the aster was placed on the endangered species list, its Hiwassee River population had declined 50% in eight years. Since then it has declined another 40% and all subpopulations are likely to become extinct within 50 years. The other population on the Ocoee River was composed of about 500 plants growing in a habitat affected by nearby mining operations, as well as power production. It is also located in an area that is subjected to trampling associated with whitewater rafting recreation on the river. Despite these threats, the Ocoee population, recently counted at 593 plants, is considered to be secure for the time being.Conservation activities include propagation of the plant in greenhouses. This is made difficult by the infestation of the greenhouse plants by the powdery mildew Erysiphe cichoracearum. The mildew is not present in the wild populations. Competing vegetation has been increasing yearly, and this is likely causing a negative impact. The Cherokee National Forest implemented a plan to remove poison ivy from aster sites, and though this was effective it was not feasible. Mechanical and chemical means are used to remove the vegetation.".
- Pityopsis_ruthii class Eudicots.
- Pityopsis_ruthii conservationStatus "G1".
- Pityopsis_ruthii conservationStatusSystem "TNC".
- Pityopsis_ruthii division Flowering_plant.
- Pityopsis_ruthii family Asteraceae.
- Pityopsis_ruthii genus Pityopsis.
- Pityopsis_ruthii kingdom Plant.
- Pityopsis_ruthii order Asterales.
- Pityopsis_ruthii order Asterids.
- Pityopsis_ruthii synonym "Chrysopsis ruthii".
- Pityopsis_ruthii synonym "Heterotheca ruthii".
- Pityopsis_ruthii thumbnail Pityopsis_ruthii_lg.jpg?width=300.
- Pityopsis_ruthii wikiPageExternalLink profile?symbol=PIRU3.
- Pityopsis_ruthii wikiPageID "32264560".
- Pityopsis_ruthii wikiPageLength "6411".
- Pityopsis_ruthii wikiPageOutDegree "45".
- Pityopsis_ruthii wikiPageRevisionID "657443878".
- Pityopsis_ruthii wikiPageWikiLink Agalinis_tenuifolia.
- Pityopsis_ruthii wikiPageWikiLink Andropogon_gerardi.
- Pityopsis_ruthii wikiPageWikiLink Apalachia_Dam.
- Pityopsis_ruthii wikiPageWikiLink Asteraceae.
- Pityopsis_ruthii wikiPageWikiLink Asterales.
- Pityopsis_ruthii wikiPageWikiLink Asterids.
- Pityopsis_ruthii wikiPageWikiLink Campsis_radicans.
- Pityopsis_ruthii wikiPageWikiLink Category:Astereae.
- Pityopsis_ruthii wikiPageWikiLink Category:Flora_of_Tennessee.
- Pityopsis_ruthii wikiPageWikiLink Category:Polk_County,_Tennessee.
- Pityopsis_ruthii wikiPageWikiLink Cherokee_National_Forest.
- Pityopsis_ruthii wikiPageWikiLink Competition_(biology).
- Pityopsis_ruthii wikiPageWikiLink Dam.
- Pityopsis_ruthii wikiPageWikiLink Endangered_species.
- Pityopsis_ruthii wikiPageWikiLink Endemism.
- Pityopsis_ruthii wikiPageWikiLink Erysiphe_cichoracearum.
- Pityopsis_ruthii wikiPageWikiLink Eudicots.
- Pityopsis_ruthii wikiPageWikiLink Flowering_plant.
- Pityopsis_ruthii wikiPageWikiLink Greenhouse.
- Pityopsis_ruthii wikiPageWikiLink Hiwassee_River.
- Pityopsis_ruthii wikiPageWikiLink Inflorescence.
- Pityopsis_ruthii wikiPageWikiLink Lespedeza_cuneata.
- Pityopsis_ruthii wikiPageWikiLink Liatris_microcephala.
- Pityopsis_ruthii wikiPageWikiLink Lonicera_japonica.
- Pityopsis_ruthii wikiPageWikiLink Microstegium_vimineum.
- Pityopsis_ruthii wikiPageWikiLink Mining.
- Pityopsis_ruthii wikiPageWikiLink Parthenocissus_quinquefolia.
- Pityopsis_ruthii wikiPageWikiLink Pityopsis.
- Pityopsis_ruthii wikiPageWikiLink Plant.
- Pityopsis_ruthii wikiPageWikiLink Polk_County,_Tennessee.
- Pityopsis_ruthii wikiPageWikiLink Pollution.
- Pityopsis_ruthii wikiPageWikiLink Powdery_mildew.
- Pityopsis_ruthii wikiPageWikiLink Power_station.
- Pityopsis_ruthii wikiPageWikiLink Pseudanthium.
- Pityopsis_ruthii wikiPageWikiLink Rafting.
- Pityopsis_ruthii wikiPageWikiLink Rhizome.
- Pityopsis_ruthii wikiPageWikiLink Schizachyrium_scoparium.
- Pityopsis_ruthii wikiPageWikiLink Symphyotrichum_dumosum.
- Pityopsis_ruthii wikiPageWikiLink Symphyotrichum_undulatum.
- Pityopsis_ruthii wikiPageWikiLink Tennessee.
- Pityopsis_ruthii wikiPageWikiLink Ocoee_River.
- Pityopsis_ruthii wikiPageWikiLink Toxicodendron_radicans.
- Pityopsis_ruthii wikiPageWikiLink Tributary.
- Pityopsis_ruthii wikiPageWikiLink Vitis_rotundifolia.
- Pityopsis_ruthii wikiPageWikiLinkText "Pityopsis ruthii".
- Pityopsis_ruthii wikiPageWikiLinkText "Ruth's golden aster".
- Pityopsis_ruthii binomial "Pityopsis ruthii".
- Pityopsis_ruthii binomialAuthority "Small".
- Pityopsis_ruthii familia Asteraceae.
- Pityopsis_ruthii genus "Pityopsis".
- Pityopsis_ruthii ordo Asterales.
- Pityopsis_ruthii regnum Plant.
- Pityopsis_ruthii species "P. ruthii".
- Pityopsis_ruthii status "G1".
- Pityopsis_ruthii statusSystem "TNC".
- Pityopsis_ruthii synonyms "Chrysopsis ruthii".
- Pityopsis_ruthii synonyms "Heterotheca ruthii".
- Pityopsis_ruthii unrankedClassis Eudicots.
- Pityopsis_ruthii unrankedDivisio Flowering_plant.
- Pityopsis_ruthii unrankedOrdo Asterids.
- Pityopsis_ruthii wikiPageUsesTemplate Template:Reflist.
- Pityopsis_ruthii wikiPageUsesTemplate Template:Taxobox.
- Pityopsis_ruthii subject Category:Astereae.
- Pityopsis_ruthii subject Category:Flora_of_Tennessee.
- Pityopsis_ruthii subject Category:Polk_County,_Tennessee.
- Pityopsis_ruthii hypernym Species.
- Pityopsis_ruthii type Eukaryote.
- Pityopsis_ruthii type Plant.
- Pityopsis_ruthii type Species.
- Pityopsis_ruthii type Thing.
- Pityopsis_ruthii type Q19088.
- Pityopsis_ruthii type Q756.
- Pityopsis_ruthii comment "Pityopsis ruthii is a rare species of flowering plant in the aster family known by the common name Ruth's golden aster. It is endemic to the US state of Tennessee, where it is known only from Polk County. It is threatened by the modification of its habitat. It is a federally listed endangered species.This is a perennial herb growing 10 to 30 centimeters tall from a rhizome several centimeters in length. There are one to several erect, slender stems covered in silvery hairs.".
- Pityopsis_ruthii label "Pityopsis ruthii".
- Pityopsis_ruthii sameAs Q7199561.
- Pityopsis_ruthii sameAs m.0gxzl6j.
- Pityopsis_ruthii sameAs Pityopsis_ruthii.
- Pityopsis_ruthii sameAs Q7199561.
- Pityopsis_ruthii wasDerivedFrom Pityopsis_ruthii?oldid=657443878.
- Pityopsis_ruthii depiction Pityopsis_ruthii_lg.jpg.
- Pityopsis_ruthii isPrimaryTopicOf Pityopsis_ruthii.