Loài này được Raf. ssp. Southern Sneezeweed; STATS. It is also used in flower gardens as an ornamental herbaceous perennial. They surround a prominent chocolate brown center disk that is covered with golden pollen and attracts butterflies. Helenium flexuosum. S. Bierner, M. purplehead sneezeweed [Helenium floridanum Fern. Flora of North America (FNA) Collection. Helenium flexuosum Purple-headed Sneezeweed. It loves full sunlight but prefers moist soil and cannot tolerate dry conditions very well. บ้าน . Cultural Information. Helenium amarum and H. jpg (1 of 1) For more information, contact: David Werier or Kyle WebsterspeciesHelenium flexuosum. flexuosum, those species also have fertile ray florets. Purple-headed sneezeweed has naturalized readily throughout New England from further South, and its use to pollinators is evident. It has been suggested that Helenium flexuosum may be of hybrid origin from H. Bloom Time: Midsummer to fall. hoopesii at higher elevations in the western mountains. 00 – $ 550. Tetrodus that has a chromosome number of 2n = 28 is H. . It is easily grown from seed and has high germination rates when sowing fresh seed shallowly in flats in a greenhouse. Helenium flexuosum Raf. Because of vegetative offsets, multiple stems usually develop. Asteraceae (daisies, sunflowers) Description. In fact, there is only one known population in Nebraska, although it is possible that others are out there. Is an erect, fibrous rooted perennial with more or less pubescent stems that grow 4 feet tall and are winged by the decurrent leaf bases. Wikispecies has an entry on: Helenium. Most grow easily from seed. Helenium nudiflorum Nutt. H 2 O, respectively. americana coralbellsCommon sneezeweed Helenium autumnale native Purple-head sneezeweed Helenium flexuosum native A complete list of plants with accompanying photos and cultural information is For more information, visit the Growing Small Farms website at under construction on Cooperative Extension's Growing. Slightly drooping when they appear, the petals tend to droop even more as the flowers mature. Growth behavior: clumpy, loosely clumpy, clump-forming. 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. The ideal temperature for germination is 21°C (70°F). S. 25% body weight of mature green plant is lethal to sheep. Great for rain gardens and moist soils, this deer-resistant late-bloomer stands out with its purple-tinged center. NCBI BLAST name: eudicots Rank: species Genetic code: Translation table 1 (Standard) Mitochondrial genetic code: Translation table 1 (Standard)Euphorbia cyparissias, also known as Cypress spurge, is considered invasive in many parts of North America. 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. FAC (Facultative, 34-66%) indicates roughly equal probabilites of finding the species growing. Leptopoda. 1838. Kingdom Plantae > Division Tracheophyta > Class Magnoliopsida > Order Asterales > Family Asteraceae > Genus Helenium Records: There are 53 records in the project database. Lactating animals eating bitterweeds may have bitter-tasting milk. 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. The flowers of this species are pollinated by insects instead of wind so they have heavy, sticky pollen that is not easily inhaled. Lawn & Turf Topics; Landscaping; Garden Design; Edible GardeningTall, Helenium ‘Flammenrad’ (‘Flaming Wheel’) produces vibrantly colored daisylike flowers with wide spoon-shaped petals surrounding a prominent chocolate brown center disk that is covered with golden pollen and attracts butterflies. The purple centers on it have encouraged more attempts to cultivate it and you’re more likely to find it for sale. "zerene stacker" stackshot "geological survey" "united states geological survey" "department of the interior" droege biml "bee inventory and monitoring laboratory" bug bugs canon close-up macro insect bug. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, Lepidoptera (Moths & Butterflies). W. Purple-headed sneezeweed can be found in forests or natural areas and along stream banks and in wet areas. When possible, plant species. The leaves are lance-shaped, pale green, and are clasped around the. trial garden that includes areas for growing both sun-loving and shade-loving plants. Treatment on. You can help reverse this trend by planting great native plants in your garden. Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed. These upright inch-wide spherical cones are complemented by a circle of bright yellow, 1. It is native to the eastern half of North America. Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. virginicum habitat in the Ozarks by using topographic maps and aerial photographs and surveyed thesePlant Finder; Lawn, Landscape & Garden Design. Helenium urmenetae. Entry From. Seeds are available through the Florida Wildflowers Growers Cooperative - H. Cuba Center is located near Wilmington, DE, (USDA Hardiness Zone7A/6B). Growing 1 to 3 feet tall. 1838. Please register or login to build your personal plant list. Helenium autumnale (Sneezeweed) $8. Online: Sale begins Aug 28. Helenium nudiflorum var. Taxonomy information for Helenium flexuosum. Blooms June–November. 5-2 (-4) mm wide, not decurrent on the stem or branches; taprooted annuals. SKU: HEFLE-SM UPC: MAXIMUM HEIGHT: 3 feet FLOWER COLOR: Yellow BLOOM PERIOD: 4 Summer SUNLIGHT PREFERENCE: Full sun to light shade MOISTURE: Average, moist. Specimen:Helenium flexuosum - Purple-headed Sneezeweed, Purplehead Sneezeweed. Helenium flexuosum, commonly known as Purplehead sneezeweed, is found in eastern states, stretching from Florida north to Maine and as far west as Texas. trial garden that includes areas for growing both sun-loving and shade-loving plants. Helenium polyphyllum Small is apparently a hybrid between H. Facts. View gallery. Review Subject Required. 5. Email Required. 5. Helenium flexuosum #2. Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed. Despite this smaller stature, plants struggled to remain upright through the season and required as much. 3 Ray flowers present; disc flowers either yellow or with. Photo taken: Saratoga Co. The flowering heads are in open, bracted inflorescences. 5-2 (-4) mm wide, not decurrent on the stem or branches; taprooted annuals. Never collect native plants from the wild as it will deplete natural ecosystems. Growth behavior: clumpy, loosely clumpy, clump-forming. 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. Leaves glabrous or sparsely to. 4: 81 (1838) This species is accepted The native range of this species is E. No occurrences found. It grows 30-40” tall on rigid, stems clad with alternate, obovate, green leaves (to 4” long). Helenium flexuosum. . Long-lasting cut flower. Kingdom. • map Helianthus divaricatus L. Bierner, M. It thrives. Tetrodus that has a chromosome number of 2n = 28 is H. However, the distribution of Helenium species can vary greatly, and some species may only be native to a few specific regions or states. Helenium flexuosum Raf. The. jpg 1,000 × 667; 245 KB Helenium flexuosum, Purple Sneezeweed, Howard County, MD, Helen Lowe Metzman 2017-08-07-17. Its flower petals are actually yellow, but. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Valued for vibrant late summer color, terrific for cutting. Forests, prairies, fens, marshes, river banks, streambanks, roadsides, railroads, disturbed sties. You will get Helenium flexuosum, PURPLE-HEADED SNEEZEWEED, purple sneezeweed, bulk wholesale, seeds for planting~f Bloom Time August, September, October Bloom Color Yellow USDA Zones 3-10 Seeds/Packet 500 Seeds/Ounce 155,000 Life Cycle Perennial Sun Exposure Full, Partial Soil Moisture Wet, Medium-Wet, Medium Height 3Helenium flexuosum is a compact perennial that typically grows 3' tall, with remarkable daisy-like flowers. Helenium flexuosum 'Tiny Dancer'. Cultural Information. This fabulous perennial provides 6-8 weeks of. Purple Headed Sneezeweed, (Helenium flexuosum), is a perennial in the aster family that grows full or partial sun. In former times, people often used snuff to induce sneezing in the belief that it would purge the body of evil. Synonyms: Helenium nudiflorum Nuttall. Viola macloskeyi. Wood Helenium floridanum Fernald Helenium godfreyi Fernald Helenium micranthum Nutt. Synonym Full Citation Basionym Type Notes; Helenium nudiflorum. Tribus: Helenieae. Jump to navigation Jump to searchAnnuals or perennials, 10–160 cm. Welcome to the North Creek plant catalog! Here you will find information on our perennials, grasses, ferns and shrubs. Canada to U. 적절한 강우량이나 물을 주는 여름철 따뜻한 기후에서 가장 잘 자랍니다. Some native flowering perennials will also germinate easily without a pretreatment including: Allium candense (Wild garlic), Echinacea purpurea (Purple coneflower), Helenium autumnale (Sneezeweed),. 6 m (2ft). NWI TN: Facultative Wetland Common Name: purplehead sneezeweed *Non-native taxon known to be naturalized in Tennessee All names & statuses follow the Guide to the Vascular Plants of Tennessee (2015). Purple-Headed Sneezeweed (Helenium flexuosum) Description: This herbaceous perennial wildflower is 1½–3' tall with each stem branching occasionally in the upper half. mô tả khoa học đầu tiên năm 1838. Plants that fill a similar niche: Coreopsis gladiata. The large flowers, up to 3 in. Helenium flexuosum – Bloom period: August to October. As an. Helenium flexuosum - Photos Resize Photo . The large disk is brownish or purplish and dome-shaped to nearly spherical. Its pollen is distributed by insects, not wind. Helenium flexuosum: ray flowers numbering mostly 8-13 per capitulum, neutral, disk flowers red-brown to purple-brown, and leaf blades entire to subentire (vs. This compact variety is part of the Mariachi™ Series and features orange petals with a gold halo surrounding a brown cone. [3] [4] They bear yellow or orange daisy-like composite flowers. across (7 cm), feature 5-10 bright yellow, wedge-shaped, drooping rays. Monographers treated H. An essential native flower for bees, it blooms long and thrives in fertile, compost-enriched borders. Lawn & Turf Topics; Landscaping; Garden Design; Edible GardeningSneezeweed. Helenium flexuosum ‘Tiny Dancer’, a selection of purple-headed sneezeweed, was named for its reputed compact nature when compared to the species. USDA-ARS GRIN Taxonomy: search W3TROPICOS: Vascular Tropicos: Helenium. Helenium drummondii and H. Viola sororia. 6. Photographed By Devry Becker Jones , January 17, 2020. discourages grazing by livestock. 1838. Helenium flexuosum Rafinesque, New Fl. Key to Helenium. 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. The flowers of this species are pollinated by insects instead of wind so they have heavy, sticky pollen that is not easily inhaled. The term "subgroup"Helenium flexuosum. Leaves glabrous or sparsely to moderately hairy; basal blades. This compound is poisonous to various animals but has anti-cancer properties. The flowers of this species are pollinated by insects instead of wind so they have heavy, sticky pollen that is not easily inhaled. 00 Houstonia purpurea (Mountain Bluets)Plant number: 1. Daisy family Goldenrod Solidago sp. The only member of sect. nudiflorum and Dugaldia hoopesii, respectively. Purplehead sneezeweed, hélénie nudiflore . sect. 2 - 0. virginicum, now recommended for delisting (30 sequences from three U. Description 6Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed. 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. 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. Sociability: I: If possible individually or small tuffs from 1-3- (5) to II: In small groups of 3-5- (10) Helenium flexuosum is often confused with: Helenium autumnale. Or direct sow in early spring or early autumn. Depending on the variety, they can reach from 3 to 5 feet (90-150 cm) in height and 2 to. You can also include plants that have. A very tall specimen, Helenium 'Kokarde' features vividly colored daisylike flowers, a mix of bright golden yellow and attractive orange-red streaks, with reflexed petals. Leaves of basal rosettes usually pinnatifid; peduncles hairy; cypselae hairy. 5. It features deep, rich, dark orange-red petals surrounding a prominent chocolate brown center disk rimmed with gold and covered with golden pollen that attracts butterflies. English . 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. The Trial Garden is maintained with the home gardener in mind. Helenium is a genus of annuals and herbaceous perennials having yellow or orange-to-red daisy-like flowers. Stems 1 (–10), erect, simple or branched distally (usually ± winged by decurrent leaf-bases), glabrous or sparsely to densely hairy. Subtribus: Gaillardiinae. It has been suggested that Helenium flexuosum may be of hybrid origin from H. The Tennessee-Kentucky 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. Perennials, 30—100 cm. The speices name flexuosum is Latin for pliant and is likely in reference to its bendable square stems. Chi (genus) Helenium. Mt. It is an erect, clump-forming perennial that is native to the eastern and midwestern U. Like other Helenium in this collection, H. Contains 7 accepted taxa overall. inches. amarum and H. Uma planta pode produzir 80 ou mais cabeças de flores em uma matriz ramificada. Each head has a rounded center of sometimes as many as 250 golden yellow disc florets and a fringe of 8. It blooms from early summer to early fall in moist, wet or dry soils. Last Revised by: USDA NRCS National Plant Data Team. 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. Date: 17 Jul 1970Similar species: Purple-head sneezeweed (Helenium flexuosum) and Common sneezeweed (Helenium autumnale). & Gray) Heiser • map Helianthus decapetalus L. Locality: USA. Helenium flexuosum Rafinesque, New Fl. Helenium flexuosum Name Synonyms Heleniastrum nudiflorum (Nutt. 28153: Jefferson: 24 Jul 1935: Scott McCoy 4086: BUT Helenium flexuosum Raf. something that is pricked; a puncture; a spot; a small portion. A similar species, Helenium flexuosum (Purple-Headed Sneezeweed), differs from Common Sneezeweed by having disk florets that are purple, rather than yellow, and its foliage is more soft-hairy. It adds a touch of drama and elegance to any garden. hoopesii were formerly known as H. Helenium flexuosum is a perennial herb up to 100 cm (40 inches) tall. Herbarium Name Used: Helenium flexuosum 2/8/2012 - BKL (Steve Glenn) + Expand All - Collapse. Viola macloskeyi. Disk florets are purple or brownish-purple. Unfortunately, there is little to no paper trail to describe how these hybrids were created and to what extent different species were involved; but it is known that the. It prefers moist to wet soils and can tolerate flooding. Welcome to the North Creek plant catalog! Here you will find information on our perennials, grasses, ferns and shrubs. This reaction was believed to clear. Images View all images. Learning Library. autumnale, with ray flowers numbering mostly 13-21 per capitulum, carpellate, disk flowers yellow, and leaf blades coarsely toothed). L. discourages grazing by livestock. Helenium flexuosum, commonly known as purplehead sneezeweed, is a perennial herbaceous plant in the Asteraceae family. Sneezeweed sets large and numerous daisy-like, yellow flowers that can provide welcome color in late summer and autumn when many other blossoms have disappeared. ‘Potter’s Wheel’ has the most pure red flowers of the top-performing sneezeweeds. Along sand road 0. Helenium flexuosum. Browse pictures and read growth / cultivation information about Helenium Species, Purple Sneezeweed, Purplehead Sneezeweed (Helenium flexuosum) supplied by member gardeners in the PlantFiles databa. Helenium is a perennial that benefits from good spacing since the foliage is dense. Cuba Center is located near Wilmington, DE, (USDA Hardiness Zone7A/6B). Lookalikes - H. Helenium flexuosum ‘Tiny Dancer’ (dwarf selection of Purplehead Sneezeweed) Solidago sphacelata ‘Golden Fleece’ (selection of Short-Pappus Goldenrod) Since you are planting perennials, not annuals with constant bloom, consider planting several different species with different bloom times. Reference page. Another dwarf is Helenium flexuosum ‘Tiny Dancer’. The website also provides access to a database and images of plants photos and herbarium specimens found at participating herbaria. 1838. Seeds are available through the Florida Wildflowers Growers Cooperative - H. 4: 81. Plant Finder; Lawn, Landscape & Garden Design. pinnatifidum. Helenium is a genus of annuals and herbaceous perennials having yellow or orange-to-red daisy-like flowers. A. wide (5 cm), lavishly splashed with orange red with deep brown, mounded center cones. Helenium flexuosum Taxonomy ID: 53721 (for references in articles please use NCBI:txid53721) current name. It can grow 12 IN - 18 IN - wide 18 IN - 36 IN - tall. 5 km E of C-491, 13 km SW of Jumeau and 10 km NE of Bailey Hill. One plant can produce 80 or more flower heads in a branching array. General Product Information. Citrus Co. Helenium flexuosum, commonly called purple-headed sneezeweed, is most easily distinguished from other sneezeweeds by its spherical, brownish-purple center disk. Like most Helenium, this species benefits from staking. Resource Type. You can view plants by either common or botanical name and sort the list by plant type. Helenium flexuosum. Unlike H. (+species list (Note: includes synonyms))Helenium virginicum : Last updated 12/15/2014. Seed. hoopesii, and H. The lowermost leaves are oblanceolate in outline and are soon deciduous; other leaves are oblong or lanceolate and more persistent. It is reported as invasive in rice fields in Asia ( Araflora, 2019 ). Native to a large part of the United States, Helenium flexuosum has been introduced to and naturalized in parts of eastern Canada. Helenium flexuosum. When these plants are eaten for several days, they may inhibit biotransformation processes in. 18-24". The semi-double and overlapping nature of this cultivar’s lemon-yellow petals adds considerable volume to. Helenium flexuosum • • • • • Summary Two unnamed accessions of Helenium flexuosum (purple-headed sneezeweed) were evaluated and received slightly different ratings. D. An exceptionally long and prolific bloomer, award-winner Helenium ‘Sahin’s Early Flowerer’ features cheerful daisylike flowers with long petals surrounding a prominent chocolate brown center disk covered with golden pollen and attracts butterflies. : Withlacoochee State Forest. Flowering profusely in a riot of cheerful colors, Helenium 'Loysder Wieck' or 'Carnival' features masses of attractive blossoms with slender in-rolled yellow ray florets, revealing their caramel-coffee underside, thus creating a unique mix of glowing hues contrasting with the prominent chocolate center cones. Tetrodus (H. S. Helenium flexuosum is a species of annual herb in the daisy family known by the common name purple sneezeweed. Add to Project. Helenium flexuosum. Helenium flexuosum Raf. When. Artemisia filifolia or Helenium flexuosum had no effect on basal hepatic cytochrome P450 content. Cypress Spurge is listed in the Invasive Plant Atlas of the United States. Seed. Helenium flexuosum, commonly called purple-headed sneezeweed, is most easily distinguished from other sneezeweeds by its spherical, brownish-purple center disk. Cuba conserves and stewards more than 1,000 acres including meadows, forests, streams and riparian corridors. autumnale, with ray flowers numbering mostly 13-21 per capitulum, carpellate, disk flowers yellow, and leaf blades coarsely toothed). Space plants 3 to 4 feet apart to ensure good airflow. Gray - coastal sneezeweed P: Helenium brevifolium (Nutt. 600. It is an erect, clump-forming perennial that is native to the eastern and midwestern U. The 1. Helenium pinnatifidum. Cut back in May-early June to reduce plant height and to encourage branching and more flowers. 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. The genus Helenium is said to have been named by Linnaeus after Helen of Troy, based on the legend that these flowers grew on the spot on the ground where her tears fell. 5” flowers on this 1’ to 3’ plant have drooping yellow petals. Helenium flexuosum 는 다양한 온도 조건에 적응하는 능력이 있지만, 물과 더위 조건의 조합에 따라 분포가 제한될 수 있습니다. Bouché Helenium brachypoda Alph. autumnale as a species complex (Rock 1956; Bierner 1972). ft. In Missouri, it typically occurs in moist soils along streams, sink hole ponds, sloughs. - Scientific name: Helenium flexuosum - Bloom period: August to October. Flowering profusely in a riot of cheerful colors, Helenium 'Mardi Gras' features masses of attractive yellow blossoms, 2 in. Helenium flexuosum Raf. Remove the seeds from the heads by rubbing then shake through a screen to remove chaff. Native to a large part of the United States, Helenium flexuosum has been introduced to and naturalized in parts of eastern Canada. Purple-headed sneezeweed (Helenium flexuosum) is an another perennial Helenium species. a hrefgardencutting gardena a. Grindelia lanceolata - gum plant. Helenium flexuosum ( Helenium flexuosum ) är en örtartad flerårig som är infödd i östra och centrala USA. In high wind or heavy rain, the stalks may need support. Unlike other cultivars, we found Helenium flexuosum to be a prolific self-seeder in the garden. Viola macloskeyi. The CalFlora Database, Berkeley. Helenium flexuosum. linifolium, an annual from southern Texas. This compact variety is part of the Mariachi™ series and features deep, true red petals surrounding a brown cone. 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. The leaves are lance-shaped, pale green, and are clasped around the. Plant database entry for Purplehead Sneezeweed (Helenium flexuosum) with 16 images, one comment, and 24 data details. W. 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. , NY: 17 Aug 2011. Multiple plants of each taxa are grown in a 15,000 sq. Plant Finder; Lawn, Landscape & Garden Design. Records per Page: View a List of All Ecological Communities. long (7 cm), and topped with eye-catching daisy flowers. It is noted for attracting wildlife. This plant is very adaptable to a variety of soils but usually found on damp, acidic soils in full sun. Facts. Great planted in a mass. Habitat: Along sand road in longleaf pine [Pinus palustris] sandhills. Abrams, L. Helenium autumnale (Sneezeweed) Helenium autumnale (Sneezeweed) is an upright, clump-forming perennial bringing weeks of color in late summer and fall when many other perennials start to fade. Helenium flexuosum Raf. Quick View. Helenium ‘Fuego’ is another hybrid sneezeweed of the Mariachi TM series from AB cultivars in the Netherlands. Western Ironweed $ 3. The flowers, 3 in. Släktnamnet kommer från "helenion", en grekisk växt uppkallad efter Helen av Troja. Rock 1957). See also: Helenium cultivars 'Biedermeier' 'Dunkle Pracht' 'Fiesta' 'Indianersommer' 'Wonadonga' Selected Weblinks. Name Required. Since that time, it was the only known population outside of Virginia. Helenium flexuosum Daisy family Joe-Pye weed Eutrochium sp. Inscription. Leaves usually mostly cauline; mostly alternate (proximal sometimes opposite); petiolate or sessile; blades mostly elliptic, lanceolate, linear, oblanceolate, oblong, ovate, or spatulate, often. Stems usually 1, usually branched distally, strongly winged, glabrous or sparsely hairy proximally, sparsely to moderately hairy distally. About 25 percent of the plant species native to North America are at risk of extinction. 繁體中文1. flexuosum. S. So sweet! Like ballerinas dancing in bright tutus throughout the foliage. Helenium flexuosum is a North American plant species in the daisy family known by the common name purple sneezeweed. A native perennial, this 2-to-3-foot species (Helenium flexuosum) is so attractive that it’s often mistaken for better known exotic perennials. In Missouri, it typically occurs in moist soils along streams, sink hole ponds, sloughs. Purple-head sneezeweed produces a distinctive seedhead that might be mistaken for a black-eyed Susan. Species Distribution.