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- Helianthus_debilis abstract "Helianthus debilis is a species of sunflower known by the common names cucumberleaf sunflower, beach sunflower, weak sunflower, and East Coast dune sunflower. It is native to the United States, where it can be found along the Atlantic and Gulf Coasts. It is known elsewhere as an introduced species, such as South Africa, Australia, Taiwan, Slovakia, and Cuba.This species may be an annual or perennial herb. It is usually perennial but it may last only one season in climates where freezes occur. It can reach 2 meters tall. The stem grows from a taproot and may grow erect or decumbent. It can also spread along the ground, becoming a dense groundcover. The leaves are usually alternately arranged, and are variable in shape and size. The largest are up to 14 centimeters long by 13 wide. The showy inflorescence is a single flower head or an array of two or three heads. There are up to 30 lance-shaped phyllaries each up to 1.7 centimeters long. There are up to 20 or 21 ray florets, each up to 2.3 centimeters long. They are usually yellow in the wild, but cultivars have been bred to bear whitish, reddish, or orange florets. The center of the head is filled with many red, yellowish, or purplish disc florets. The fruit, a cypsela, is roughly 2 or 3 millimeters long.There are several subspecies. At one point there were eight. Five are currently recognized.H. d. ssp. cucumerifolius - cucumberleaf sunflower. The subspecies with the widest distribution.H. d. ssp. debilis - beach sunflower. Endemic to Florida.H. d. ssp. silvestris - forest sunflower. Endemic to Texas.H. d. ssp. tardiflorus - slow-flowering sunflower. Mississippi to Florida. Limited to rare, specialized coastal habitat.H. d. ssp. vestitus - clothed sunflower, hairy beach sunflower. Endemic to Florida. Imperiled; known from about 22 occurrences.This species grows in several types of coastal habitat, sometimes directly on the beach. It tolerates a moderately saline environment, but not an excessive amount of salt spray or inundation. It is highly drought-tolerant and it will grow in low-nutrient and poor soils, such as alkaline and acidic soils and sand. The plant attracts butterflies and birds feed on the fruits.This plant is used as a garden flower. It is also good for landscaping, especially in poor, dry soils. It is planted on beaches, where it forms a sand-binding groundcover that prevents erosion and stabilizes dunes. It requires supplemental watering only rarely, if ever. It may get "ratty-looking" after the showy flowers have withered. Available cultivars include 'Italian White', 'Flora Sun','Dazzler', 'Excelsior', and 'Orion'.".
- Helianthus_debilis binomialAuthority Thomas_Nuttall.
- Helianthus_debilis class Eudicots.
- Helianthus_debilis conservationStatus "G5".
- Helianthus_debilis conservationStatusSystem "TNC".
- Helianthus_debilis division Flowering_plant.
- Helianthus_debilis family Asteraceae.
- Helianthus_debilis genus Helianthus.
- Helianthus_debilis kingdom Plant.
- Helianthus_debilis order Asterales.
- Helianthus_debilis order Asterids.
- Helianthus_debilis synonym "*Helianthus cucumerifolius (Torr. & A.Gray, syn of subsp. cucumerifolius)".
- Helianthus_debilis synonym "*Helianthus vestitus (E.Watson, syn of subsp. vestitus )".
- Helianthus_debilis thumbnail Tournesol_de_la_Plage_(5954050557).jpg?width=300.
- Helianthus_debilis wikiPageID "39408946".
- Helianthus_debilis wikiPageLength "7892".
- Helianthus_debilis wikiPageOutDegree "33".
- Helianthus_debilis wikiPageRevisionID "669459317".
- Helianthus_debilis wikiPageWikiLink Alkali_soil.
- Helianthus_debilis wikiPageWikiLink Angiosperms.
- Helianthus_debilis wikiPageWikiLink Asteraceae.
- Helianthus_debilis wikiPageWikiLink Asterales.
- Helianthus_debilis wikiPageWikiLink Asterids.
- Helianthus_debilis wikiPageWikiLink Australia.
- Helianthus_debilis wikiPageWikiLink Bract.
- Helianthus_debilis wikiPageWikiLink Category:Flora_of_the_United_States.
- Helianthus_debilis wikiPageWikiLink Category:Helianthus.
- Helianthus_debilis wikiPageWikiLink Category:Plants_described_in_1841.
- Helianthus_debilis wikiPageWikiLink Cuba.
- Helianthus_debilis wikiPageWikiLink Cultivar.
- Helianthus_debilis wikiPageWikiLink Drought.
- Helianthus_debilis wikiPageWikiLink East_Coast_of_the_United_States.
- Helianthus_debilis wikiPageWikiLink Endemism.
- Helianthus_debilis wikiPageWikiLink Erosion.
- Helianthus_debilis wikiPageWikiLink Eudicots.
- Helianthus_debilis wikiPageWikiLink Florida.
- Helianthus_debilis wikiPageWikiLink Flowering_plant.
- Helianthus_debilis wikiPageWikiLink Groundcover.
- Helianthus_debilis wikiPageWikiLink Gulf_Coast_of_the_United_States.
- Helianthus_debilis wikiPageWikiLink Helianthus.
- Helianthus_debilis wikiPageWikiLink Inflorescence.
- Helianthus_debilis wikiPageWikiLink Introduced_species.
- Helianthus_debilis wikiPageWikiLink Mississippi.
- Helianthus_debilis wikiPageWikiLink Plant.
- Helianthus_debilis wikiPageWikiLink Plantae.
- Helianthus_debilis wikiPageWikiLink Pseudanthium.
- Helianthus_debilis wikiPageWikiLink Slovakia.
- Helianthus_debilis wikiPageWikiLink South_Africa.
- Helianthus_debilis wikiPageWikiLink Taiwan.
- Helianthus_debilis wikiPageWikiLink Taproot.
- Helianthus_debilis wikiPageWikiLink Texas.
- Helianthus_debilis wikiPageWikiLink Thomas_Nuttall.
- Helianthus_debilis wikiPageWikiLinkText "H. debilis".
- Helianthus_debilis wikiPageWikiLinkText "Helianthus debilis".
- Helianthus_debilis binomial "Helianthus debilis".
- Helianthus_debilis binomialAuthority Thomas_Nuttall.
- Helianthus_debilis familia Asteraceae.
- Helianthus_debilis genus "Helianthus".
- Helianthus_debilis hasPhotoCollection Helianthus_debilis.
- Helianthus_debilis ordo Asterales.
- Helianthus_debilis regnum Plant.
- Helianthus_debilis regnum Plantae.
- Helianthus_debilis species "H. debilis".
- Helianthus_debilis status "G5".
- Helianthus_debilis statusSystem "TNC".
- Helianthus_debilis synonyms "*Helianthus cucumerifolius (Torr. & A.Gray, syn of subsp. cucumerifolius) *Helianthus vestitus (E.Watson, syn of subsp. vestitus )".
- Helianthus_debilis unrankedClassis Eudicots.
- Helianthus_debilis unrankedDivisio Angiosperms.
- Helianthus_debilis unrankedDivisio Flowering_plant.
- Helianthus_debilis unrankedOrdo Asterids.
- Helianthus_debilis wikiPageUsesTemplate Template:Commonscat.
- Helianthus_debilis wikiPageUsesTemplate Template:Reflist.
- Helianthus_debilis wikiPageUsesTemplate Template:Taxobox.
- Helianthus_debilis subject Category:Flora_of_the_United_States.
- Helianthus_debilis subject Category:Helianthus.
- Helianthus_debilis subject Category:Plants_described_in_1841.
- Helianthus_debilis hypernym Sunflower.
- Helianthus_debilis type Eukaryote.
- Helianthus_debilis type Plant.
- Helianthus_debilis type Species.
- Helianthus_debilis type Thing.
- Helianthus_debilis type Q19088.
- Helianthus_debilis type Q756.
- Helianthus_debilis comment "Helianthus debilis is a species of sunflower known by the common names cucumberleaf sunflower, beach sunflower, weak sunflower, and East Coast dune sunflower. It is native to the United States, where it can be found along the Atlantic and Gulf Coasts. It is known elsewhere as an introduced species, such as South Africa, Australia, Taiwan, Slovakia, and Cuba.This species may be an annual or perennial herb. It is usually perennial but it may last only one season in climates where freezes occur.".
- Helianthus_debilis label "Helianthus debilis".
- Helianthus_debilis sameAs Helianthus_debilis.
- Helianthus_debilis sameAs Helianthus_debilis.
- Helianthus_debilis sameAs m.0vpmnw4.
- Helianthus_debilis sameAs Helianthus_debilis.
- Helianthus_debilis sameAs Q13918173.
- Helianthus_debilis sameAs Q13918173.
- Helianthus_debilis wasDerivedFrom Helianthus_debilis?oldid=669459317.
- Helianthus_debilis depiction Tournesol_de_la_Plage_(5954050557).jpg.
- Helianthus_debilis isPrimaryTopicOf Helianthus_debilis.