helenium flexuosum. Habitat: Along sand road in longleaf pine [Pinus palustris] sandhills. helenium flexuosum

 
 Habitat: Along sand road in longleaf pine [Pinus palustris] sandhillshelenium flexuosum  Biology : FloweringPurple-headed sneezeweed (Helenium flexuosum) Pussytoes, field (Antennaria neglecta) Ramps (Allium tricoccum) Scarlet bee balm (Monarda didyma) Showy goldenrod (Solidago erecta) Small white American-aster (Symphyotrichum ericoides) Smooth aster (Symphyotrichum laeve) Turtlehead (Chelone glabra)A 1964 selection by Karl Foerster, Helenium ‘Königstiger’ (King’s Tiger in English) features rich brick-red daisylike flowers with golden yellow rings at the base of each petal and at their tips

It naturally likes wetter conditions than the others; this one was photographed in North Georgia in a boggy area. Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed. Summer bloomer. It is a perennial plant native to Europe and was introduced to North America as an ornamental plant. Plants that fill a similar niche: Coreopsis gladiata. Growth behavior: clumpy, loosely clumpy, clump-forming. 560. states and two Canadian provinces), the federally “threatened” H. This low-maintenance flower is deer resistant and does well in most soils. Seed. Helenium flexuosum Raf. Wikispecies has an entry on: Helenium. Unlike other cultivars, we found Helenium flexuosum to be a prolific self-seeder in the garden. In this study, we systematically identified potential H. Anonymous. Helenium Species: autumnale Family: Asteraceae Uses (Ethnobotany): Powdered leaves and flower heads were used in the treatment of colds and congestion by inducing sneezing. Reference page. jpg 1,000 × 667; 245 KB Helenium flexuosum, Purple Sneezeweed, Howard County, MD, Helen Lowe Metzman 2017-08-07-17. Comments Required. is an accepted name This name is the accepted name of a species in the genus Helenium (family Compositae). Add to Project. The flowerheads are many, with 8–13 yellow ray florets that are fan-shaped, notched, and reflexed downward. You can also include plants that have. The genus name comes from 'helenium,' a Greek plant named after Helen of Troy. It was difficult to distinguish rapidly growing seedlings from the original plants, which may have resulted in the evaluation of multiple generations. NCBI BLAST name: eudicots Rank: species Genetic code: Translation table 1 (Standard) Mitochondrial genetic code: Translation table 1 (Standard)USDA Plants DatabaseHere are the main care requirements for growing helenium: Plant helenium in a location with full sun and well-drained, moist, acidic soil. It is native to the eastern and central United. always flooded extremely dry. Welcome to the North Creek plant catalog! Here you will find information on our perennials, grasses, ferns and shrubs. Purple-headed Sneezeweed Helenium flexuosum Rafinesque Synonyms: Helenium nudiflorum, Purple-head Sneezeweed, Purplehead Sneezeweed. A must-have in the late season garden! Helenium ‘Waltraut’ is highly prized by gardeners for its extremely long blooming season, large blossoms (3″ wide or 8 cm) and its unique and outstanding color. Je dělený asi do 32 druhů a některé se pěstují jako okrasné. This. Helenium flexuosumは高さ40インチまでの多年生草本です。 1つの植物で、分岐アレイに80個以上の頭花を生成できます。各頭部には、最大700個の黄色または紫色のディスク小花があり、時には光線小花がなく、時には8-13個の黄色、赤、紫、または茶色の小花があります。 1. While blooms were not as numerous as other cultivars, individual inflorescences were some of the largest produced by any sneezeweed in our trial, with some reaching a diameter. Helenium has an undeserved reputation as a cause of hayfever and fall allergies. : W shore of Hinckley Lake near the mouth of Beaver Creek, ca. Helenium flexuosum (Purple-head Sneezeweed) is an upright, single-stemmed. Divide in spring to revive plantings. Bright yellow daisy-like flowers. Helenium flexuosum Raf. Some native flowering perennials will also germinate easily without a pretreatment including: Allium candense (Wild garlic), Echinacea purpurea (Purple coneflower), Helenium autumnale (Sneezeweed),. GRIN link : Helenium L. Avoid overfertilization which may cause plants to grow too tall. The website also provides access to a database and images of plants photos and herbarium specimens found at participating herbaria. F. Integrated Taxonomic Information System: Helenium flexuosum: PLANTS Database (USDA/NRCS) Helenium flexuosum: Plants of the World Online: Helenium flexuosum: The International Plant Names Index: Helenium flexuosum Raf. It can become weedy in disturbed areas such as old fields, pastures, and roadsides. يمكن أن ينتج مصنع واحد 80 رأس زهرة أو أكثر في مجموعة متفرعة. Helenium flexuosum Raf. Two Ways to Shop. Subfamilia: Asteroideae. This reaction was believed to clear. Helenium flexuosum. Email Required. Hasteola suaveolens - false Indian plantain. Helenium, Sneezeweed. purple-headed sneezeweed. The flowerheads are many, with 8–13 yellow ray florets that are fan-shaped, notched, and reflexed downward. 1968. Family. Description 6Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed. Tetrodus (H. Unlike H. The pigmentation is so saturated that the rays appear to have a soft, velvety texture. This variety of sneezeweed is native to the eastern and central United States. It has been suggested that Helenium flexuosum may be of hybrid origin from H. The subspecies autumnal is found across Maryland, as is the fellow damp-adapted species Purple-headed Sneezeweed (Helenium flexuosum), though its peak bloom is around midsummer instead. Helenium flexuosum, commonly known as Purplehead sneezeweed, is found in eastern states, stretching from Florida north to Maine and as far west as Texas. Native to a large part of the United States, Helenium flexuosum has been introduced to and naturalized in parts of eastern Canada. ใช้แอป . Great for rain gardens and moist soils, this deer-resistant late-bloomer stands out with its purple-tinged center. H. hoopesii, and H. S. D. Treatment appears in FNA Volume 21. Helenium flexuosum, commonly known as Purplehead sneezeweed, is found in eastern states, stretching from Florida north to Maine and as far west as Texas. Helenium Salsa - Common name: Helen's Flower - Spicy salsa red/orange petals surround a dark maroon and yellow cone. This shorter and more colorful version of sneezeweed is somewhat common in eastern North America, but rare in Kansas and virtually unknown to Nebraska. It is widespread across much of eastern and central United States and Canada, from Nova Scotia west to Ontario, Minnesota, and Kansas, south to Florida, Louisiana, and eastern Texas. Account for Purplehead Sneezeweed - Helenium flexuosum Rafinesque:. 00 – $ 930. Prefers standing water in marshes, swamps, and pond edges, but can adapt to wet rain gardens or ditches too. Lawn & Turf Topics; Landscaping; Garden Design; Edible GardeningHelenium bigelovii (Bigelow's Sneezeweed) is an upright perennial bringing weeks of color in mid to late summer when many other perennials are starting to fade. Rather sparsely petalled, the blossoms are elegantly borne atop the foliage of oblong to lance. $8. Purple-headed sneezeweed is native to the eastern and southern United States, but has apparently been introduced to and is spreading north through eastern Canada. One pla…Plant Highlights Purple-headed Sneezeweed Published August 18, 2020 Purple-headed sneezeweed ( Helenium flexuosum) is a native wildflower in most of the. 5. H. At the range map link above, zoom in for county-level data. Cultivars . Keep the soil moist and water as needed. Tetrodus that has a chromosome number of 2n = 28 is H. In high wind or heavy rain, the stalks may need support. L. Purple-headed sneezeweed can be found in forests or natural areas and along stream banks and in wet areas. Wihle it grows on a variety of soils types and pH conditions, in its native habitat, it is found growing on alkaline soil. The semi-double and overlapping nature of this cultivar’s lemon-yellow petals adds considerable volume to. It is widespread across much of eastern and central United States and Canada, from Nova Scotia west to Ontario, Minnesota, and Kansas, south to Florida, Louisiana, and eastern Texas. Helenium ‘Fuego’ is another hybrid sneezeweed of the Mariachi TM series from AB cultivars in the Netherlands. Valued for vibrant late summer color, terrific for cutting. Plant Finder; Lawn, Landscape & Garden Design. A member of the Aster family, the genus Helenium has summer to fall-blooming perennials with daisy-like flowers about 2 inches across. 'Feuersiegel' means 'Fiery Lightning. It has the following synonyms: Helenium nudiflorum Nutt. The record derives from TICA (data supplied on 2012-02-11) which reports it as an accepted name (record 0DC20D45-2560-42DF-AFE8-EC467CB7513C) with original publication details: New Fl. Beginning Monday, Aug 28 at 8am through Sunday, Sept 3 at midnight, purchase plants on ActiveMontgomery. Flowering profusely in a riot of cheerful colors, Helenium 'Mardi Gras' features masses of attractive yellow blossoms, 2 in. In former times, people often used snuff to induce sneezing in the belief that it would purge the body of evil. An illustrated flora of the Pacific States. Accessed: 2018 January 28. Species: Helenium. Data Source. Herbaceous Plants. Soil/Substrate: Sand. 00. A cheerful US native wilGoodyera pubescens - rattlesnake plantain. The flowers of this species are pollinated by insects instead of wind so they have heavy, sticky pollen that is not easily inhaled. flexuosum. Helenium flexuosum is a perennial wildflower with daisy flowers and a spherical, garnet-colored cone. Raf. Cuba Center is located near Wilmington, DE, (USDA Hardiness Zone7A/6B). The 1. Stems terminate in numerous 2” daisy-like heads. Also called sneezeweed for early medicinal use as snuff. Helenium bolanderi A. The Alabama Plant Atlas is a source of data for the distribution of plants within the state as well as taxonomic, conservation, invasive, and wetland information for each species. tall (75-90 cm). In Missouri, it typically occurs in moist soils along streams, sink hole ponds, sloughs. 1-4 fee. Availability: Please select required attribute(s)Helenium flexuosum, Capitulum. USDA-ARS GRIN Taxonomy: search W3TROPICOS: Vascular Tropicos: Helenium. Tetrodus and a conspectus of North American Helenium (Compositae). This compound is poisonous to various animals but has anti-cancer properties. Because of vegetative offsets, multiple stems usually develop. Culver's Root $ 3. Pinch plants in the spring to encourage branching. Taxonomy of Helenium sect. Poisonous. Kingdom. Genus: Helenium. The subspecies autumnal is found across Maryland, as is the fellow damp-adapted species Purple-headed Sneezeweed (Helenium flexuosum), though its peak bloom is around midsummer instead. Wildflowers Verbena stricta. Recommended Sun-Loving Native Perennials for Central Florida. Known as Sneezeweed because the flowers were pulverized to make a snuff that induced sneezing. Upright, compact selection. Helenium flexuosum, commonly known as Purplehead sneezeweed, is found in eastern states, stretching from Florida north to Maine and as far west as Texas. Helenium pinnatifidum. 5” flowers on this 1’ to 3’ plant have drooping yellow petals. Daisy family Goldenrod Solidago sp. Helenium is a perennial that benefits from good spacing since the foliage is dense. Helenium flexuosum Taxonomy ID: 53721 (for references in articles please use NCBI:txid53721) current name. Subspecific taxa: Classification: Magnoliophyta Magnoliopsida Asterales Asteraceae. Its delightful brown spherical cones are surrounded by a flowing fringe of bright yellow reflexed petals looking like hundreds of yellow skirted dancers in motion. Picture and collection by Helen Lowe Metzman. It prefers moist to wet soils and can tolerate flooding. Viola macloskeyi. Salt Spray Tolerance: Low/no tolerance of salty wind or direct salt spray. Plant Highlights Purple-headed Sneezeweed Published August 18, 2020 Purple-headed sneezeweed ( Helenium flexuosum) is a native wildflower in most of the eastern U. Leaves glabrous or sparsely to. L. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, Lepidoptera (Moths & Butterflies). Never collect native plants from the wild as it will deplete natural ecosystems. Bouché Helenium brachypoda Alph. Native to a large part of the United States, Helenium flexuosum has been introduced to and naturalized in parts of eastern Canada. It is a perennial and grows primarily in the temperate biome. 1' - 3' Sun-Part Shade Average-Poor/ Moist-Wet Self sows. 1838. It blooms from early summer to early fall in moist, wet or dry soils. Helenium pinnatifidum. Cultural Information. Award-winner Helenium 'Moerheim Beauty' is highly prized by gardeners for its extremely long blooming season and its unique and outstanding color. wide (7 cm). Smaller than Common Sneezeweed, Purplehead Sneezweed has a darker purple center. Lawn & Turf Topics; Landscaping; Garden Design; Edible GardeningPlant Finder; Lawn, Landscape & Garden Design. flexuosum, H. We used ITS sequences as species barcodes to evaluate 127 samples of 12 Helenium species from the eastern and central USA, focusing on a species complex of H. Howe, Rhodora 70: 454. Helenium campestre 6. S. The flowering heads are in open, bracted inflorescences. Helenium ‘Fuego’ is another hybrid sneezeweed of the Mariachi TM series from AB cultivars in the Netherlands. Tetrodus (H. The flowers are in various colors Its delightful brown spherical cones are surrounded by a flowing fringe of bright yellow reflexed petals looking like hundreds of yellow skirted dancers in motion. This highly decorative and adaptable herbaceous perennial is greatly valued for its nectar-rich flowers, popular with a great variety of bees, butterflies, beneficial wasps and songbirds. virginicum habitat in the Ozarks by using topographic maps and aerial photographs and surveyed thesePlant Finder; Lawn, Landscape & Garden Design. 2 - 0. Leaves glabrous or sparsely to. 3 Ray flowers present; disc flowers either yellow or with. Seeds are available through the Florida Wildflowers Growers Cooperative - H. The leaves are lance-shaped, pale green, and are clasped around the. Last Revised by: USDA NRCS National Plant Data Team. Quick View. , flexuosin A and flexuosin B, have formulae C 17 H 24 O 6 and C 20 H 28 O 6. Also known as Helen’s Flower, or Sneezeweed, there are many fine hybrid selections, valued for their late summer display of bright daisy-like flowers. November 2007. It has been suggested that Helenium flexuosum may be of hybrid origin from H. The flowering heads are in open, bracted inflorescences. It is widespread across much of eastern and central United States and Canada, from Nova Scotia west to Ontario, Minnesota, and Kansas, south to Florida, Louisiana, and eastern Texas. Helenium flexuosum Rafin. Slightly drooping when they appear, the petals tend to droop even more as the flowers mature. A virágok szirmai kissé lefelé állnak, s a fogazott szélük felé kiszélesednek. Storred. They are toothed or almost entire. Helenium autumnale sneezeweed Helenium flexuosum purple-headed sneezeweed Helianthus divaricatus woodland sunflower Helianthus tuberosus sunchoke Heliopsis helianthoides oxeye Heuchera americana 'Green Spice' Green Spice coralbells Heuchera americana var. Helenium_flexuosum_JDonnelly_01. Description. Helenium flexuosum Raf. Moisture Tolerance: Usually moist, occasional inundation ----- to ----- Short very dry periods. Space plants 3 to 4 feet apart to ensure good airflow. Helenium flexuosum Raf. It is a plant growing in damp areas up to about 3 feet tall, branching in the upper part of the plant. Daisy family Panicled Tick Trefoil Desmodium paniculatum Legume family White Snakeroot Ageratina altissima Daisy family Photos and titles by Dorothy Smullen oneset Eupatorium perfoliatum Daisy family Evening Primrose Oenothera biennisHelenium flexuosum (Sneezeweed) Helenium 'Moerheim Beauty' Heliopsis helianthoides (Perennial Sunflower) Hepatica acutiloba (Sharped-lobed Hepatica) Heuchera americana 'Dales Strain' (Alumroot) Heuchera americana (Alumroot) Heuchera villosa 'Autumn Bride' (Alumroot) Hibiscus moschuetos (Swamp Mallow Hibiscus) Iris cristata (Dwarf Crested Iris)Continue reading below for tips on how to grow Helenium from seed. An erect, clump-forming plant that branches near the top. Remove the seeds from the heads by rubbing then shake through a screen to remove chaff. RHS Plants for Pollinators plants. Helenium flexuosum Taxonomy ID: 53721 (for references in articles please use NCBI:txid53721) current name. Helenium flexuosum: Commonly known as purple-headed sneezeweed, it’s a North American native that sports vibrant yellow petals with a deep purplish-brown center cone. This reaction was believed to clear. 1838. Cuba conserves and stewards more than 1,000 acres including meadows, forests, streams and riparian corridors. 09 (36760234206). Some species can be grown from stem cuttings. Helenium polyphyllum Small is apparently a hybrid between H. Florida is divided into four main ecological regions: the East Gulf Coastal Plain, the South Atlantic Coastal Plain. ], entire or subentire, the lowermost ones oblanceolate, commonly deciduous, the others oblong or. Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed. The team of experts at Prairie Legacy Inc. (Usually moist, occasional. (+species list (Note: includes synonyms))Helenium flexuosum has been found in the following conservation area: Occurrence Native Status Everglades National Park: Present Native Helenium flexuosum has been found in the following county. It is. 6 m (2ft). discourages grazing by livestock. Flora of North America (FNA) Collection. Acad. Helenium flexuosum Raf. The website also provides access to a database and images of plants photos and herbarium specimens found at participating herbaria. Plants that fill a similar niche: Coreopsis gladiata. It is hardy to UK zone 3. Another dwarf is Helenium flexuosum ‘Tiny Dancer’. Plant Spacing. Viola sororia. It is a perennial plant native to Europe and was introduced to North America as an ornamental plant. . Create a Login Forgot Password. Helenium nudiflorum forma homochromum Helenium nudiflorum Nuttall, forma homochromum M. - pretty sneezeweed P: Helenium flexuosum Raf. The Mt. Euphorbia cyparissias, also known as Cypress spurge, is considered invasive in many parts of North America. This compact variety is part of the Mariachi™ Series and features orange petals with a gold halo surrounding a brown cone. The most toxic species is Helenium microcephalum - smallhead sneezeweed - as little as 0. long (7 cm), and topped with eye-catching daisy flowers. USDA-ARS GRIN Taxonomy: search W3TROPICOS: Vascular Tropicos: Helenium. Canada to U. Last Revised by: USDA NRCS National Plant Data Team. Purple-headed Sneezeweed Helenium flexuosum. Family: Asteraceae (ass-ter-AY-see-ee) Genus:. Stems usually 1, usually branched distally, strongly winged, glabrous or sparsely hairy proximally, sparsely to moderately hairy distally. It is an erect, clump-forming perennial that is native to the eastern and midwestern U. Blooms for weeks from midsummer to fall. Tad M. Yellow petals are lavishly edged with bright orange-red, aging to clear red edged in gold, all surrounding deep chestnut cones. It is easily grown from seed and has high germination rates when sowing fresh seed shallowly in flats in a greenhouse. Artemisia filifolia or Helenium flexuosum had no effect on basal hepatic cytochrome P450 content. However, microsomal dealkylation activity of short alkyl chain alkoxyresorufin ethers (methoxy, ethoxy and propoxy) was inhibited approximately 50%. Deadhead to promote more blooms. It prefers full sun and wet soil that resembles its typical native habitat along streams, ponds, and moist open meadows. 00 Houstonia purpurea (Mountain Bluets)Plant number: 1. Helenium flexuosum is a perennial herb up to 100 cm (40 inches) tall. Ruellia strepens Linnaeus * MA, MI, PA, WI SMOOTH RUELLIA, aka Limestone Petunia, Limestone Wild Petunia, Rustling Wild Petunia (strepens rustling, making noise, from Latin strepo, strepĕre to make a noise)Nursery Plant List and Germination Codes Chart page 5 Blue Grama Bouteloua gracilis A Blue Joint Grass Calamagrostis canadensis A,D Blue Sage Salvia azurea A Blue Vervain Verbena hastata C(30),D Blue Wild Indigo Baptisia australis C(10),H,I Blue-Ridge Buckbean Thermopsis caroliniana A,H,I Blunt Spike Rush Eleocharis obtusa C,DHelenium 'Biedermeier' produces eye-catching flowers, 2 in. It is an erect, clump-forming perennial that is native to the eastern and midwestern U. Stems usually 1, usually branched distally, strongly winged, glabrous or sparsely hairy proximally, sparsely to moderately hairy distally. Helenium flexuosum, commonly known as Purplehead sneezeweed, is found in eastern states, stretching from Florida north to Maine and as far west as Texas. Key to Helenium. Plant Type: Herbaceous Perennials. Phone: (847) 742-1790 Monday - Friday: 7:30am - 4:00pm Saturday : 7:00am - 10:30pm. It adds a touch of drama and elegance to any garden. Helenium flexuosum. Helenium flexuosum. The habit of Helenium flexuosum (purple sun bride) Plant height: 12-14″ (80 to 90 cm) Growth habit: upright, leafy stems without a basal tuft of leaves. Recommended Sun-Loving Native Perennials for Central Florida. Click here for a description of rare, threatened, or endangered (RTE. It is noted for attracting wildlife. Helenium flexuosum, commonly called purple-headed sneezeweed, is most easily distinguished from other sneezeweeds by its spherical, brownish-purple center disk. The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Helenium ‘Tijuana Brass’ was introduced in 2012 by Joy Creek Nursery in Scappoose, Oregon. Summary. – Scientific name: Helenium autumnale – Bloom period: August to October. Helenium flexuosum Rafinesque, New Fl. Flora of North America, Vol 21, Names. Plant Finder; Lawn, Landscape & Garden Design. Helenium 'Mardi Gras' produces a festival of multicolored blooms to jazz up the garden for six to eight weeks in mid to late summer. They surround a dark brown cone covered with golden pollen that attracts butterflies. Helenium flexuosum in Kew Science Plants of the World Online. Common Sneezeweed Helenium autumnale Aster family (Asteraceae) Description: This perennial plant is 3-5' tall, branching sparingly to occasionally. Helenium flexuosum, commonly called purple-headed sneezeweed, is most easily distinguished from other sneezeweeds by its spherical, brownish-purple center disk. Good branching habit, strong stems, excellent mildew. Despite its common name, it presents no problems for most allergy sufferers. Loài này được Raf. It can tolerate temporary flooding, prefers moist soil, and may. Helenium flexuosum Raf. ) Kuntze, Heleniastrum parviflorum Kuntze, Helenium. The alternate leaves are up to 5" long and 1½" across; they are lanceolate-oblong to elliptic-oblong in shape and slightly serrated along their margins. Contains 7 accepted taxa overall. Helenium flexuosum, commonly called purple-headed sneezeweed, is most easily distinguished from other sneezeweeds by its spherical, brownish-purple center disk. jpg 5,040 ×. Helenium flexuosum. purplehead sneezeweed. 5. It is widespread across much of eastern and central United States and Canada, from Nova Scotia west to Ontario, Minnesota, and Kansas, south to Florida, Louisiana, and eastern Texas. Keep the soil moist and water as needed. Tropicos. Known as Sneezeweed because the flowers were pulverized to make a snuff that induced sneezing. It has been suggested that Helenium flexuosum may be of hybrid origin from H. The yellow flowers are just as tall as those in the Mariachi series but the petals droop slightly, resembling ballet skirts, and the centers are more prominent. microcephalum in the Southwest, and H. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, Lepidoptera (Moths & Butterflies). autumnale and H. Celtis laevigata Carpinus caroliniana Helenium autumnale Carex scoparia sugarberry ironwood common sneezeweed broom sedge Diospyros virginiana Cephalanthus occidentalis Helenium flexuosum Carex stricta persimmon buttonbush purplehead sneezeweed tussock sedge Fraxinus. flexuosum and other species in the genus contain a lactone known as Helenalin. 5 m (1ft 8in) at a fast rate. Danh pháp hai phần. 4: 81. 5. Helenium flexuosum Raf. It is widespread across much of eastern and central United States and Canada, from Nova Scotia west to Ontario, Minnesota, and Kansas, south to Florida, Louisiana, and eastern Texas. Two sesquiterpene lactone constituents of Helenium flexuosum Raf. Each head has a rounded center of sometimes as many as 250 golden yellow disc florets and a fringe of 8. Taxonomy information for Helenium flexuosum. Leveleik általában sötét-zöldek és lándzsa alakúak. 1 mi. Leaves of basal rosettes usually pinnatifid; peduncles hairy; cypselae hairy. Name Required. Leptopoda. Golden yellow reflexed petals encircle a. Common Sneezeweed blooms quite late in the year, providing some fall color when other plants have finished blooming. Weed ID Guide, Weed Science Program. It loves full sunlight but prefers moist soil and cannot tolerate dry conditions very well. Tetrodus that has a chromosome number of 2n = 28 is H. Entry for Helenium flexuosum Rafinesque [family COMPOSITAE] Herbarium. Personal communication to John Kartesz. Plant pick-up Sept 9 by appointment only. You can view plants by either common or botanical name and sort the list by plant type. One plant can produce 80 or more flower heads in a branching array. • map Helianthus divaricatus L. We are eager to share our passion and knowledge with others by giving. S. 2001. sect. flexuosum blooms from mid-summer into fall. 20. Seed. Helenium flexuosum Dark-Eyed Helen Jun-Oct Golden-yellow petals hang skirt-like around a spherical purple-brown center.