Helianthus laevigatus is a North American species of sunflower known by the common name smooth sunflower. It is native to the east-central and southeastern United States from Georgia to Maryland.[2]
Helianthus laevigatus is a perennial herb up to 220 cm (over 7 feet) tall, spreading by means of underground rhizomes. Most of the leaves are on the stem rather than crowded around the base, each leaf up to 15 cm (6 inches) long. Leaves and stems generally have no hairs, and the undersides of the leaves sometimes appear pale because of a layer of wax on the surface. One plant usually produces 1-6 flower heads. Each head has 5-10 yellow ray florets surrounding 40 or more yellow disc florets. The plant grows soils derived from shale.[3][4]
helianthus, laevigatus, north, american, species, sunflower, known, common, name, smooth, sunflower, native, east, central, southeastern, united, states, from, georgia, maryland, scientific, classification, kingdom, plantae, clade, tracheophytes, clade, angios. Helianthus laevigatus is a North American species of sunflower known by the common name smooth sunflower It is native to the east central and southeastern United States from Georgia to Maryland 2 Helianthus laevigatus Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Eudicots Clade Asterids Order Asterales Family Asteraceae Genus Helianthus Species H laevigatus Binomial name Helianthus laevigatusTorr amp A Gray Synonyms 1 Helianthus mollis var cordatus S Watson Helianthus reindutus E S Steele E Watson Helianthus laevigatus subsp reindutus E S Steele E S Steele Helianthus laevigatus is a perennial herb up to 220 cm over 7 feet tall spreading by means of underground rhizomes Most of the leaves are on the stem rather than crowded around the base each leaf up to 15 cm 6 inches long Leaves and stems generally have no hairs and the undersides of the leaves sometimes appear pale because of a layer of wax on the surface One plant usually produces 1 6 flower heads Each head has 5 10 yellow ray florets surrounding 40 or more yellow disc florets The plant grows soils derived from shale 3 4 References edit The Plant List Helianthus laevigatus Torr amp A Gray Biota of North America Program 2014 county distribution map Flora of North America Helianthus laevigatus Torrey amp A Gray 1842 Smooth sunflower Carl S Keener 1983 Distribution and biohistory of the endemic flora of the mid Appalachian shale barrens Botanical Review 49 65 115External links editDigital Atlas of the Virginia Flora nbsp This Heliantheae article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Helianthus laevigatus amp oldid 1013491766, wikipedia, wiki, book, books, library,
