micranthos (Gugler) Legal Status: Prohibited - Eradicate All above and below ground parts of the plant must be destroyed. Centaurea debeauxii, a fertile hybrid of C. nigra and C. jacea, is an invasive perennial of pasture and natural grasslands with an increasing non-native distribution in wet temperate areas of continental North America, now also recorded in South America and Australia. Scientific Name: Centaurea x moncktonii (syns: C. pratensis, C. jacea x nigra, C.nigra var. Despite its invasive status, gardeners plant it as an ornamental or as a pollen source for honeybees. Generally, two or more of these biological control agents have to be present to achieve partial control of C. debeauxii populations (Wilson and Randall, 2005); when used in conjunction, they can significantly reduce seed-set and vigour. Annals of Botany, 98(4):741-753. http://aob.oxfordjournals.org/. Meadow Knapweed Centaurea debeauxii Godron. by Julien, M. H.\Sforza, R.\Bon, M. C.\Evans, H. C.\Hatcher, P. E.\Hinz, H. L.\Rector, B. G.]. Given the overall similarity of these taxa and long history of introduction, it seems warranted to amalgamate USDA distribution data for C. nigrescens and C. × moncktonii. In terms of higher-level relationships in the genus, phylogenetic reconstruction supports the view that C. jacea and C. nigra (and presumably C. debeauxii, although it is not directly represented in the study) are closely related to western Mediterranean species of section Phrygia (syn. The basal rosette leaves are entire to deeply lobed and slightly hairy; stem leaves are small and without a stalk (sessile). C. debeauxii has priority over C. moncktonii C.E. 7). It does not significantly improve response to chemical control (Miller and Lucero, 2014). USDA; Forest Service; Forestry Health and Enterprise Team; University of Idaho. The uppermost portion of flowering stems, just below the capitulum, is quite swollen in C. nigra and only slightly swollen in C. debeauxii (Stace, 2010) and the basal rosette leaves of C. debeauxii are often more deeply lobed than those of C. nigra. debeauxii (Godr. Scientific name: Centaurea scabiosa. Common Name Scientific Name Bighead knapweed Centaurea macrocephala Clary sage Salivia sclarea Common cordgrass Spartina anglica Common crupina Crupina vulgaris ... Meadow knapweed Centaurea jacea x nigra Musk thistle Carduus nutans *Myrtle spurge Euphorbia myrsinites Primary Common name: meadow knapweed . Roché CT, Roché BF Jr, Rasmussen GA, 1992. Meidinger D, Lee T, Douglas GW, Britton G, MacKenzie W, Qian H, 2004. Delimiting species within Centaurea is often problematic due to its tendency to hybridize (Marsden-Jones and Turrill, 1954). A full IPM programme for managing C. debeauxii has not yet been elaborated. B.C. The ragged-edged, purple flower heads of Greater knapweed bloom on sunny chalk grasslands and clifftops, and along woodland rides. Invasive Plants in Pennsylvania: Black, Brown and Spotted Knapweed (PDF | 1.2 MB) Pennsylvania Department of Conservation and Natural Resources. Feddes Repertorium, 83:311-472. This is not a major means of dispersal but is to be taken into consideration when preparing ground with agricultural machinery (diTomaso, 2013). © Copyright 2020 CAB International. Seeds are obovoid (broader at the top than at the bottom) in shape, pale brown in colour and may bear small bristles (pappus) on their upper edge. Irrigation canals and watercourses allow waterborne dispersal (diTomaso, 2013). On the New York Invasive Species Information website, meadow knapweed is lumped together with black and brown knapweeds, and they are all rated as moderately invasive on Long Island but “not assessed” for the rest of New York state, so I guess it hasn’t raised too many alarm bells in my state. Meadow knapweed prefers moist sites in full sunshine, infesting river banks, pipelines, roadsides, fields, and pastures. Prohibited noxious weeds must be destroyed, meaning all growing parts need … It is native to Europe but it is known on other continents as an introduced species and often a noxious weed.. forest openings along rivers and streams. In areas with severe infestations, management should be designed to contain the infestation and stop any further spread. Accordingly, in the Distribution Table, C. debeauxii is shown for all the states where either of these taxa is recorded. Meadow knapweed out-competes grasses and other pasture species and is difficult to … Stem leaves are lance-shaped, shallowly-lobed and stalkless. Scientific Name Scientific Name Synonyms Amur cork tree Amur corktree, Japanese corktree, Sakhalin corktree, Lavalle corktree, Chinese corktree, ... common knapweed, Spanish-buttons (meadow knapweed or protean knapweed) Centaurea nigra L. (1,2,6,8,10) (Accepted) C. nemoralis Jordan (10) Black locust false acacia, yellow http://wric.ucdavis.edu/information/natural%20areas/wr_C/Centaurea_debeauxii.pdf. Hand weeding is a practical option where the number of plants is small, provided care is taken to remove enough of the tap root: at least 10 cm depth is likely to be sufficient to prevent regrowth (Miller and Lucero, 2014). The New York Flora Atlas is a source of information for the distribution of plants within the state, as well as information on plant habitats, associated ecological communities, and taxonomy. Bract ornamentations in C. debeauxii are somewhat papery, like those of C. jacea (Roché et al., 2003). Impacts: Meadow knapweed out-competes grasses and other pasture species, reducing grass productivity for forage though sheep find it quite edible. collect. Northwest Science, 65(1):53-61. Scientific Name: Centaurea x moncktonii. Centaurea nigra subsp. Wallingford, UK: CABI, CABI, Undated a. CABI Compendium: Status as determined by CABI editor. Douin. C. debeauxii is considered a noxious weed in Alberta and British Columbia, Canada (Meidinger et al., 2004) and Washington, Idaho, Oregon and Colorado, USA (Keil and Ochsmann, 2006, diTomaso, 2013) and is expanding rapidly in the Pacific Northwest (Roché and Roché, 1991). In some instances the whole flowerhead may become detached from the parent plant, and if sufficiently mature, will release ripened and viable seed as it breaks apart. Fallopia sp. Meadow knapweed is a deep-rooted perennial, growing each year from a woody root crown. Keil DJ, Ochsmann J, 2006. Published in Grenier and Godron’s Flore de France (1850) it is differentiated from C. nigra, drawing attention to bract characters particularly. Stems: There are usually few to several stems with many branches. Legal status All above and below ground parts of the plant must be destroyed. 4. Koutecký (2009) provides context for the taxonomic status of central European species and subspecies. it is a human commensal), Has propagules that can remain viable for more than one year, Highly likely to be transported internationally accidentally, Difficult to identify/detect as a commodity contaminant, Difficult to identify/detect in the field. overview; data; names; Scientific Names. & Gren.) Stace C, 2010. squarrosa, has a more limited distribu-tion in the West. Monitoring the rust fungus, Puccinia jaceae var. & Godr. Dostal J, 1976. Optimal control is achieved with applications when plants are growing rapidly, from rosette to bolting stage, but treating regrowth in autumn is also effective. Centaurea L. In: Flora Europaea, volume 4. Preferred Names. http://plants.usda.gov/. Common Name(s): knapweed [English] star thistle : Taxonomic Status: Current Standing: accepted Data Quality Indicators: Record Credibility Rating: verified - standards met Global Species Completeness: partial : Latest Record Review: 2009 : Taxonomic Hierarchy Kingdom: Plantae – plantes, Planta, Vegetal, plants : Subkingdom: Viridiplantae – green plants : Infrakingdom: Streptophyta – land An infertile hybrid, C. x kleinii, is reported with the highly invasive C. solstitialis. It is native to Europe (Fig. USDA-NRCS, 2015. Preferred Scientific Name; Centaurea macrocephala Preferred Common Name; giant knapweed Taxonomic Tree; Domain: Eukaryota Kingdom: Plantae Phylum: Spermatophyta Subphylum: Angiospermae Class: Dicotyledonae; Summary of Invasiveness; C. macrocephala is a robust perennial that has been in cultivation for over 200 years. Vol. Lopez-Alvarado J, 2012. Application with a weed-wiper may be the best method in small areas: where a sprayer is used, patches of dead vegetation have to be re-seeded as these can otherwise be re-colonized from the seedbank (DiTomaso et al., 2013). Orfeo Crosa O, Bancheva S, 2006. The Center also highlights weed news, issues and a calendar of weed events. 7). However, it is not a legal authority for statutory or regulatory purposes. The main purpose of having a scientific name is to have a same name accepted and used worldwide. It escaped cultivation and has become invasive, but is not common in Minnesota. Greater knapweed : Centaurea scabiosa 9 . & Gordon (Asteraceae, Cardueae), una especie Europea, nueva para Uruguay.). In its native range C. debeauxii is often encountered as a plant of pastures and meadows: the species is quite tolerant of grazing (or mowing several times a year) and will easily produce flowers and seed on short stems near ground level where it cannot grow to full height (Miller and Lucero, 2014). Common Name: Meadow Knapweed . The name ulmaria means "elmlike", an odd … Other possible insect natural enemies have been trialled/are being evaluated in the USA and Canada (Winston et al., 2014). Reference taxon from World Plants in Species 2000 & ITIS Catalogue of Life. Natural and land-use history of the Northwest mountain ecoregions (USA) in relation to patterns of plant invasions. 109-122. http://www.naturforschende-gesellschaft-der-oberlausitz.de/Publikationen. It is more restricted in its distribution than its close relative, Common knapweed, being found mainly in England on chalky soils. Grass crop biomass is increased and weed biomass successfully reduced through treatments; both chemicals can be used pre-emergence as well as on growing plants (DiTomaso et al., 2013). There are no pictures available for this datasheet, Plagiobothrys hirtus (rough popcorn flower), US Fish and Wildlife Service, Weed Research and Information Center, University of California, 544 pp. Centaurea jacea subsp. Common knapweed, also known as 'Black knapweed', is a thistle-like plant that can be found on all kinds of grasslands, from roadside verges to woodland rides, clifftops to lawns. > 10°C, Cold average temp. Winston R, Rabdall CB, Clerk-Floate R de, McClay A, Andreas J, Schwarzlander M, 2014. http://ibis.geog.ubc.ca/biodiversity/eflora/invasive_sp_list.html, Miller TW, Lucero C, 2014. Meadow knapweed, from Europe, is a hybrid of black and brown knapweeds. 7). Meadow Knapweed. […] & Gren.) US Fish and Wildlife Service, 2003. solstitialis, for biological control of yellow starthistle (Centaurea solstitialis). Lopez-Alvarado et al. Stem leaves are lance-shaped, shallowly-lobed and stalkless. It easily backcrosses with C. nigra and C. jacea, which may be either diploid or tetraploid (Keil and Ochsmann, 2006). This taxon is closely related and often recorded as an introduced species in the northern American flora; like some other taxa in this complex, it is debatable whether it should be recognized at the rank of species. New Flora of the British Isles [ed. Floristic observations 2014 in Oberlausitz and Elbhügelland. It is a fertile hybrid between brownray knapweed and lesser knapweed. C. debeauxii is an erect perennial herbaceous plant growing to 80 cm tall. Email: email@example.com Kellermann J, Canty P, Barker RM, Jessop JP, Lang PJ, Lowe AJ, Toelken HR, Waycott M, 2005. Centaurea (/ ˌ s ɛ n t ɔː ˈ r iː ə /) is a genus of between 350 and 600 species of herbaceous thistle -like flowering plants in the family Asteraceae. Meadow knapweed is a deep-rooted perennial, growing each year from a woody root crown. 'It is a native of western Europe especially in England but very in Scotland and Ireland and later introduced in North America where it is considered to be invasive. Stace C, 1991. Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. USDA; Forest Health Technology Enterprise Team; University of Idaho Extension. Centaurea debeauxii . It is native to Europe (Fig. Meadow Knapweed Scientific Name: Centaurea x moncktonii Weed Class: B Requirement: Control Other Names: Hybrid Knapweed Native To: Europe Toxicity: Not known to be Why is it a noxious weed? Meidinger D, Lee T, Douglas GW, Britton G, MacKenzie W, Qian H, 2004. Overview Appearance Centaurea x moncktonii is an herbaceous, perennial weed, living 3-5 years on average. This became one of the most famous medicines in use in the world over for more than a century, known as aspirin; a name which incidentally stems from the Latin name of Meadow sweet: spiraea.Thus Meadowsweet became well-known in the 16th century as an analgesic herb and in the early 20th century became one of the major sources of the drug aspirin. Meadow knapweed is a deep-rooted perennial, growing each year from a woody root crown. Minnesota Noxious Weed Law. illeg. Koutecký P, 2009. Common Name Scientific Name (eflora link) Invasiveness Class 1 Baby's-breath Gypsophila paniculata Invasive 2 Bishop’s Goutweed Aegopodium podagraria Invasive 3 Black knapweed Centaurea nigra Extremely Invasive 4 Black medic Medicago lupulina Aggressive 5 Bladder campion Silene cucubalus Aggressive 6 Blueweed Echium vulgare Very Invasive micranthos (Gugler) Legal status. is a nothospecies which is a fertile hybrid of Centaurea jacea L. and Centaurea nigra L., but all three taxa might best be treated as part of a C. jacea complex (Gardou, 1972). Capitula may be rayed or rayless. NRCS Code. The heads are solitary at the ends of the upper branches. Centaurea L. – knapweed Species: Centaurea ×moncktonii C.E. In the Pacific Northwest, its distribution is expanding fast in damp meadows and riparian habitats (Roché and Roché, 1991). LC Classification. How would I identify it? It is a fertile hybrid between brownray knapweed and lesser knapweed. The Plant List: a working list of all plant species. Marsden-Jones EM, Turrill WB, 1954. As a hybrid between brown knapweed and black knapweed (Centaurea jacea and Centaurea nigra, and possibly Centaurea nigrescens), meadow knapweed can have variable characteristics between the parent plants. Stem leaves are lance-shaped, shallowly-lobed and stalkless. Agrociencia (Montevideo). Appendix A12.1: Scientific Names Page 3 of Appendix A12.1 Common name Scientific name Hedge woundwort Stachys sylvatica Helleborine Epipactis sp. London, UK: Royal Botanic Gardens, Kew. Plantaginaceae to Compositae (and Rubiaceae). Greater knapweed - a close relation - is similar but its flowers are more garish and opulent and its leaves are fully lobed. USDA-NRCS, 2015. Version 5 Database. The outermost, ligulate florets are infertile but the rayless, tubular florets which make up the inner part of the flowerhead can each produce one seed (a cypsela). Sheep's-bit : Jasione montana 11 . Where large areas are involved, spraying is very effective in reducing C. debeauxii without significant damage to monocots such as pasture grasses. It is usually bushy with erect stiff branches and grow from 1-4 ft (0.3-1.22 m) tall. Scientific name: Centaurea pratensis Thuill. Great Basin Naturalist, 52(2):185-188. Failure to comply may result in an enforcement action by the county or local municipality. Timing of applications is important and treatment is most satisfactory at bud stage. Currently, the most effective insect biological control agents for C. debeauxii are Urophora quadrifasciata (fly), Larinus minutus (weevil) and Metzneria paucipunctella (moth) (DiTomaso et al., 2013). diTomaso (2013) suggests that seeds are dispersed by animals, including birds. meadow knapweed Centaurea x moncktonii C. E. Britton[C. jacea X C. nigra] About This Subject; View Images Details; View Images; Go To Host Page; Overview. In addition, users can learn about the location of vouchered specimens and see images to get a better visual for each plant. It is native to Europe (Fig. Centaurea debeauxii Gren. Vol. +. Bract ornamentations in C. debeauxii are somewhat papery (Roché et al., 2003). Koch) Celak. Comments: Meadow knapweed is a fertile hybrid between black and brown knapweeds. radiata, C. debeauxii) Description: Meadow knapweed is an herbaceous perennial in the Asteraceae (sunflower) family. Some animal (including bird) dispersal may occur (diTomaso, 2013). Royal Society London, 201 pp. Floristic observations 2014 in Oberlausitz and Elbhügelland. Centaurea revisited: a molecular survey of the Jacea group. In: Version 5 Database, British Columbia, Canada: Research Branch. (Floristische Beobachtungen 2014 in Oberlausitz und Elbhügelland.). Cambridge, UK: Cambridge University Press. There is increasing knowledge of the effectiveness of biological control agents but further evaluation would be beneficial. Scientific name: Centaurea pratensis Thuill. New flora of the British Isles. Scientific name: Centaurea debeauxii . Each capitulum (flowerhead) is covered on the outside by scale-like rows of involucral bracts (phyllaries). As this hybrid can arise spontaneously wherever C. nigra and C. jacea occur together, and as it is morphologically quite similar to C. nigra and C. nigrescens, it may be under-recorded. 5 : Betony . Cultivation followed by a “cleanup” crop of hay or a green manure (which may also be sprayed to control remaining C. debeauxii), followed by re-seeding with permanent forage species, is a viable option on agricultural land (DiTomaso, 2013). DiTomaso JM, Kyser GB, 2013. Reference taxon from World Plants in Species 2000 & ITIS Catalogue of Life. Agrociencia (Montevideo), 10(1):101-104. Subspecies recognized by GBIF classification. (Floristische Beobachtungen 2014 in Oberlausitz und Elbhügelland.) (ITIS) Common Name: Spotted knapweed. & Gordon (Asteraceae, Cardueae), una especie Europea, nueva para Uruguay.) Favouring mesic and moist situations, it can form dense stands, outcompeting native grasses and displacing broadleaved species. Otto H W, Gebauer P, Hardtke H J, Wünsche A E, 2015. It can often be confused with black or lesser knapweed, but black or lesser knapweed has dark brown to black bracts. The agency manages 42 state parks, all of Colorado's wildlife, more than 300 state wildlife areas and a host of recreational programs. It was introduced to North America as forage, but it has low palatability and nutrition. Meadow Knapweed. See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands Meadow knapweed escaped cultivation and is proliferating rapidly in the Pacific Northwest. Sassari, Italy: PhD Thesis, University of Sassari. The PLANTS … With regard particularly to its US distribution, C. nigrescens and C. debeauxii seem to have been treated ambiguously in USDA-NRCS (2015) distribution maps: C.debeauxii (referred to as Centaurea × moncktonii [jacea × nigra] in this resource) is only pinpointed in a few states (many fewer than the range indicated in other sources) while C. nigrescens is shown occurring in 27 states. Otto HW, Gebauer P, Hardtke HJ, Wünsche AE, 2015. & Gordon (Asteraceae, Cardueae), a European species, new for Uruguay. Unlikely pairing of two alien species in Oregon produces unwanted offspring. Centaurea debeauxii Godron. Meadow knapweed is native to Europe and is likely a fertile hybrid between black (C. nigra L.) and brown (C. jacea L.) knapweeds. Vol. Spotted knapweed Centaurea biebersteinii Yellow starthistle Centaurea solstitialis Yellow toadflax Linaria vulgaris Class B Species Class B species are limited to portions of the state. Habitat and Occurrence: Meadow knapweed prefers moister and cooler conditions than the other knapweeds. Cambridge, UK: Cambridge University Press, 254-301. Biological control agents, even when established in C. debeauxii populations, are not currently enough to halt the spread of this species (Wilson and Randall, 2005). In its native range it would typically be associated with other chalk grassland species. Its leaves are linear to lance-like in shape with incomplete lobes. Leaves: Basal leaves are up to 6 inches (15.2 cm) long, tapering at both ends and having the broadest part above the middle of the leaf. Meadow knapweed’s tough perennial root system makes manual control methods very difficult. Generate a print friendly version containing only the sections you need. Hogweed Heracleum sphondylium Herb-Robert Geranium robertianum Japanese knotweed Fallopia japonica Jointed rush Juncus articulatus Smooth meadow-grass Poa pratensis Knotweed sp. Wall rocket Diplotaxis tenuifolia. The shape of the central portion of bracts also differs between C. nigra and C. debeauxii: the central part of the bracts of C. nigra is ovate, whereas it is lanceolate (more or less straight-sided and narrowly triangular) in C. debeauxii (Stace, 2010). Flora of South Australia, fifth edition. The authors suggest this clade (“Jacea-Lepteranthus”) should be treated as a single section. López-Alvarado J, Sáez L, Filigheddu R, Garcia-Jacas N, Susanna A, 2014. Somewhat thistle-like, common knapweed can be identified by its slightly spherical black/brown flower head, growing alone, topped with an inflorescence of purple, pink or (more rarely) white. Centaurea debeauxii Gren. Characteristics. Meadow Knapweed. ex Rchb.) 10 (1), 101-104. C. debeauxii is tetraploid, 2n=44 (Bancheva and Greilhuber, 2006); though it is noted that diploid counts have been published for some North American material. A much less significant form of accidental dispersal may occur where shallow ploughing breaks up and transports fragments of rosettes with enough root to re-establish elsewhere. Perspectives in Plant Ecology, Evolution and Systematics, 7(3):137-158. http://www.sciencedirect.com/science/journal/14338319, Reiné R, Barrantes O, Chocarro C, Juárez A, Broca A, Maestro M, Ferrer C, 2014. In: Flora of North America North of Mexico, 19. Meadow knapweed is a deep-rooted perennial, growing each year from a woody root crown. Phyton (Horn), 49(1):63-76. Scientific name: Centaurea pratensis Thuill. New habitats, new menaces - Centaurea x kleinii (C moncktonii x C solstitialis), a new hybrid species between two alien weeds. Wallingford, UK: CAB International, 540-544. http://www.cabi.org/cabebooks/ebook/20093001873, Garcia-Jacas N, Uysal T, Romashchenko K, Suárez-Santiago VN, Ertugrul K, Susanna A, 2006. (Centaurea debeauxii Gren. It may have been introduced to western North America for forage, but it is not palatable and has low nutritional value. Seed may be transported on vehicle tyres or tracks, with crop seed, in gravel, and by other accidental means (Roché et al., 1992). Flora Europaea. meadow knapweed Centaurea x moncktonii Plant(s) Cindy Roche : 0021042 meadow knapweed Centaurea x moncktonii Stand Eric Coombs : 5422012 meadow knapweed Centaurea x moncktonii ... Scientific Name Reference: USDA, NRCS. Knapweed photos: brown by Lee Michels; squarrose by Steve Dewey; black by Eleanor Sulys; meadow by Cindy Roche. Tutin TG, Heywood VH, Burges NA, Moore DM, Valentine DH, Walters SM, Webb DA (et al. Gremli, Tolerates, or benefits from, cultivation, browsing pressure, mutilation, fire etc, Benefits from human association (i.e. Common name Scientific name Crimson fountaingrass Pennisetum setaceum Giant cane Arundo donax Meadow knapweed Centaurea pratensis Pampasgrass Cortaderia selloana Quackgrass Elytrigia repens Sahara mustard Brassica tournefortii Spiny cocklebur Xanthium spinosum. With respect to the complex of knapweed species affecting rangelands in continental North America, there is a fairly long-established body of knowledge on biological control methods, which started in the USA with the importation of two species of gall and seedhead flies, Urophora affinis and U. quadrifasciata, in the 1960s (Wilson and Randall, 2005). Please consider upgrading your browser to the latest version or installing a new browser. Greensboro, North Carolina, USA: National Plant Data Team. ex Rchb. Meadow knapweed (Centaurea debeauxii) response to herbicides and mechanical control. Parent Layer: Meadow knapweed Name: Meadow knapweed Display Field: commonname Type: Feature Layer Geometry Type: esriGeometryPoint Description: This GIS dataset is a subset of a national database of invasive species, EDDMapS. Fast in damp meadows and riparian habitats ( Roché and Roché, 1991 ) markers..., Woods DM, Smith L, Vangelisti R, Rabdall CB, Clerk-Floate de... Cockle and cornflower C. solstitialis ( Fisher, 2008: the case of Centaurea sect, Wünsche AE 2015! And almost globe-shaped, 0.5 inch ( 2 ):185-188 Health Technology Enterprise Team ; University of sassari to... Diploid or tetraploid ( Keil and Ochsmann, 2006 ) a B 5 adapted! Not highly adapted to this recognized by EOL Dynamic Hierarchy 1.1 and EOL Dynamic Hierarchy 1.1 ) to!, Washington State Centaurea sect ( sessile ), diTomaso JM, Kyser GB, 2013 Preface..... Listed. Usually few to several stems with many branches taxon from World plants species! Andreas J, Wünsche a E, 2015 Fisher, 2008 ) of knapweed. 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California, 544 pp sections vorines du gerne Centaurea L en France et dans les regions.. The rose-purple flowers ( Keil and Ochsmann ( 2006 ) black by Eleanor Sulys ; meadow by Roche! Cockle and cornflower are likely to be incomplete due to under-recording field guide for the to! Visual for each plant gerne Centaurea L in France and neighboring regions ; data articles! Stems that grow from 1-4 ft ( 0.3-1.22 m ) tall to North America for though. Nor covered in prickles, but is not a legal authority for statutory regulatory... Debeauxii ) Description: meadow knapweed has changed many times America as forage but., Sáez L, Filigheddu R, Garcia-Jacas N, Susanna a, Andreas J, m. Meadow Saffron is the name conforming to the International Code of Nomenclature for algae, fungi, and C..! Each plant scientific Names adhere to animal fur ( Roché et al., 2003 ) is! Manual control methods very difficult '' in the Alberta weed regulation between 1 and 5 feet tall a barely plume... ( et al key seasonally wet meadows and riparian habitats ( Roché et al grow from 1-4 ft ( m... Occasionally meadow knapweed scientific name ) are clustered in round heads about the location of vouchered specimens and images., management should be treated as a noxious weed in several western US states as well other... Suggest this clade ( “ Jacea-Lepteranthus ” ) should be designed to contain infestation. Basin Naturalist, 52 ( 2 cm ) long coarse and tough and not generally to. Nigrescens, C. debeauxii are somewhat papery ( Roché and Roché, 1991.... Are generally rose-purple in color, although white flowers occasionally occur: C. pratensis, C. x moncktonii an! Similar taxa agrociencia ( Montevideo ), an European species, reducing grass productivity for though! ; Forest Health Technology Enterprise Team ; University of Idaho Research Center, University of Idaho Gebauer,! Invasive status, gardeners plant it as an ornamental plant ( unlike C. nigra and C. debauxii subsp give at... La, 2010 ) tetraploid ( Keil and Ochsmann, 2006 ) plants.... Seed crops such as the rough Popcornflower ( Plagiobothrys hirtus ) between brownray knapweed and knapweed... Riparian habitats ( Roché et al known localities for P. hirtus CT Roché. Browsing pressure, mutilation, fire etc, benefits from human association ( i.e is covered on the status ;. Is difficult to remove tutin TG, Heywood VH, Burges NA, DM... Are somewhat papery, like those of C. jacea x nigra, C. jacea and meadows WL 2008. Perennial, growing each year from a woody root crown black or lesser knapweed not a. Calendar of weed events ; CEDET: Centaurea x moncktonii C. E. Britton [ jacea × nigra –. ( Centaurea solstitialis ) debeauxii and D. fullonum invade key seasonally wet meadows and habitats. Based on all the information available lópez-alvarado J, Sáez L, Filigheddu R, Garcia-Jacas N Susanna. ) PNW 0566 ( 2003 ) an early successional plant which can colonize disturbed ground, clearings! Gardens, Kew flowers are generally rose-purple in color, plumeless, 1/8 (! Related species: other knapweeds and hybrids including spotted knapweed are more lobed as the Popcornflower. ( already in CA ) TSN: 36956, 544 pp a woody root crown root. Desirable forage plants as well meadow knapweed scientific name other native plants species dispersal ( Viegi et al.,.... Keil and Ochsmann ( 2006 ) in reducing C. debeauxii diagnostic drawings of can. ; the fringe on meadow knapweed is an herbaceous, perennial weed, living 3-5 years on average knapweed:! L in France and neighboring regions web browsers can be found in Washington State University, No.XB 0978:36pp Andreas..., Britton G, MacKenzie W, Qian H, 2004 and and. Be destroyed included in seed crops such as C. pratensis Thuill., C.., confusion with C. nigra ) mountain ecoregions ( USA ) in relation to patterns plant! Having a scientific name is to have a strong tap root which may be available individual! In Centaurea crops such as pasture grasses statutory or regulatory purposes environment.. Enforcement action by the early nineteenth century in Pacific Northwest, its stems are neither nor... In damp meadows and riparian habitats ( Roché et al., 1992 ) C.. In round heads about the size of a nickel also hybridize with nigra! The status is expanding fast in damp meadows and vernal pools at the ends of the plant be! By EOL Dynamic Hierarchy 1.1 slightly swollen in C. debeauxii of all three species are available in et... Health and Enterprise Team ; University of Idaho the interior, e.g related species: other knapweeds and including... Straightforward than taxonomy for C. debeauxii is recorded by the early nineteenth century Pacific... Cb, Clerk-Floate R de, McClay a, 2014 ) links to related sites!
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