Meadow knapweed is native to Europe and is likely a fertile hybrid between black (C. nigra L.) and brown (C. jacea L.) knapweeds. An elegant, thistle which is far more refined than several of its family members, Meadow or Bog Thistle, as it also known, is a creeping perennial commonly found in damp places and peaty pastures, most predominantly in the west. Wall rocket Diplotaxis tenuifolia. Wilson LM, Randall CB, 2005. Viegi L, Vangelisti R, Pacini E, 2003. The herb Knapweed in olden times was called 'Matte Felon,' from its use in curing felons or whitlows and thus it got the name 'Maude Felone,' or 'Boltsede. The basal rosette leaves are entire to deeply lobed and slightly hairy; stem leaves are small and without a stalk (sessile). Scientific name: Centaurea debeauxii . In its native range, C. debeauxii occurs from western to central Mediterranean Europe. New habitats, new menaces - Centaurea x kleinii (C moncktonii x C solstitialis), a new hybrid species between two alien weeds. 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). It occurs predominantly in coastal Washington and Oregon, but is also found in moister, cooler habitats of the interior, e.g. It is usually bushy with erect stiff branches and grow from 1-4 ft (0.3-1.22 m) tall. While C. jacea and C. nigra are well established as invasive rangeland weeds, both of these seem to have decreased somewhat in the Pacific Northwest, whereas C. debeauxii has been increasing rapidly (Roché and Roché, 1991). It was reportedly introduced to the UK in 1805 and its … 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. Common Name Scientific Name Common Name: Meadow Knapweed Scientific Names: Centaurea x moncktonii C.E. Britton [jacea × nigra] – meadow knapweed Weed Research and Information Center, University of California, 544 pp. Meadow Knapweed. Lopez-Alvarado J, 2012. Local accidental introduction may occur where C. debeauxii seed, or ripening capitula, which are capable of releasing viable seed, are transported in hay. Fallopia sp. Dispersal of squarrose knapweed (Centaurea virgata ssp. Comments: Meadow knapweed is a fertile hybrid between black and brown knapweeds. The taxonomic status of this species is uncertain. Stem leaves are lance-shaped, shallowly-lobed and stalkless. 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 is an herbaceous perennial growing from a woody root crown. by Cambridge University Press]. Preferred Names. debeauxii (Godr. C. jacea was introduced originally as a forage crop, while C. nigra probably also arrived in ballast, so it is likely that the hybrid would once again have formed where these two species overlapped. This is not a major means of dispersal but is to be taken into consideration when preparing ground with agricultural machinery (diTomaso, 2013). squarrosa) capitula by sheep on rangeland in Juab County, Utah. Lopez-Alvarado et al. Koutecký (2009) provides context for the taxonomic status of central European species and subspecies. The name ulmaria means "elmlike", an odd … Centaurea stoebe subsp. Reference taxon from World Plants in Species 2000 & ITIS Catalogue of Life. Douin. http://ibis.geog.ubc.ca/biodiversity/eflora/invasive_sp_list.html, Miller TW, Lucero C, 2014. Cambridge, UK: Cambridge University Press, 254-301. It grows up to 40 inches tall from a main stem with several spreading branches and a … Collectanea Botanica, 29:17-23. Centaurea debeauxii Godr. The insect-pollinated, composite flowerheads of C. debeauxii are made up of 40-100 individual flowers (Keil and Ochsmann, 2006). ex Rchb. Leaf margins are entire, lobed, or toothed. Tutin T G, Heywood V H, Burges N A, Moore D M, Valentine D H, Walters S M, Webb D A (et al Editors), 1976. C. debeauxii is not known to have been deliberately introduced as an ornamental plant (unlike C. nigra). Reference taxon from World Plants in Species 2000 & ITIS Catalogue of Life. thuillieri, and C. jacea x nigra. 7). Weed Control in Natural Areas in the Western United States. Taxonomic and nomenclatural revision of Centaurea subjacea (Asteraceae-Cardueae) and similar taxa. Centaurea nigra is a species of flowering plant in the daisy family known by the common names lesser knapweed, common knapweed and black knapweed.A local vernacular name is hardheads.. In addition, users can learn about the location of vouchered specimens and see images to get a better visual for each plant. Centaurea debeauxii Gren. In terms of understanding its ecology and potential invasiveness, there is merit in discussing C. debeauxii separately, whether or not taxonomic opinion ultimately upholds it as a species in its own right. A B 5 Descriptions adapted from Roche and Roche, 1993. Once established, infestations of meadow knapweed are difficult to remove. Mowing is ineffective as the plants generally grow again from the basal rosette, but it can be used as a means to limit seed production. Overview Appearance Centaurea x moncktonii is an herbaceous, perennial weed, living 3-5 years on average. Royal Society London, 201 pp. Meadow knapweed is native to Europe and is likely a fertile hybrid between black (C. nigra  L.) and brown (C. jacea  L.) knapweeds. 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. Pesticides should always be used in a lawful manner, consistent with the product's label. 2360 Rainwater Road. Flora Europaea. 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. The agency manages 42 state parks, all of Colorado's wildlife, more than 300 state wildlife areas and a host of recreational programs. It is native to Europe but it is known on other continents as an introduced species and often a noxious weed.. Grossheimia macrocephala (Puschkarew ex Willdenow) Sosnowsky & Takhtajan, 1945; International Common Names Tutin TG, Heywood VH, Burges NA, Moore DM, Valentine DH, Walters SM, Webb DA (et al. Meidinger D, Lee T, Douglas GW, Britton G, MacKenzie W, Qian H, 2004. Marsden-Jones EM, Turrill WB, 1954. The Weed Research and Information Center provides information on California weeds. Spotted knapweed, Centaurea stoebe, is perhaps the most wide-spread species, followed in abundance by diffuse knapweed, C. diffusa. Meadow knapweed’s tough perennial root system makes manual control methods very difficult. 4. Greensboro, North Carolina, USA: National Plant Data Team. Britton, although the latter synonym is often found in literature and is used (following Stace, 1991) by Keil and Ochsmann (2006) and is an accepted name in The Plant List (2013). In: Version 5 Database, British Columbia, Canada: Research Branch. non Lam. Version 1.1. The Plant List: a working list of all plant species. C. nigra has black, clearly divided, comb-like ornamentations (pectinations) on the edges of bracts, overlapping and largely covering up the central portion of their neighbours, whereas the ornamentation on the edges of bracts of C. debeauxii is less divided, the bracts may be brown or tan in colour, and do not overlap the neighbouring bracts so as to obscure them fully (Stace, 2010). Roché BF Jr, Talbott CJ, 1986. Great Basin Naturalist, 52(2):185-188. Weed Control in Natural Areas in the Western United States., Weed Research and Information Center, University of California. http://ibis.geog.ubc.ca/biodiversity/eflora/invasive_sp_list.html. Published in Grenier and Godron’s Flore de France (1850) it is differentiated from C. nigra, drawing attention to bract characters particularly. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere ; the Middle East and surrounding regions are particularly species-rich. Flora of South Australia., Adelaide, Australia: State Herbarium of South Australia. decipiens. Scientific name: Centaurea pratensis Thuill. In: Proceedings of the XII International Symposium on Biological Control of Weeds, La Grande Motte, France, 22-27 April, 2007 [ed. Scientific name: Centaurea pratensis Thuill. & Gordon (Asteraceae, Cardueae), una especie Europea, nueva para Uruguay.). Cambridge, UK: University Press. They are broadly oval and almost globe-shaped, 0.5 inch (1.3 cm) long. Centaurea macrocephala Puschkarew ex Willdenow, 1803; Preferred Common Name. 544 pp. It is a fertile hybrid between brownray knapweed and lesser knapweed. C. debeauxii is an erect perennial herbaceous plant growing to 80 cm tall. Phyton (Horn), 49(1):63-76. Baton Rouge, USA: National Plant Data Center. micranthos (Gugler) Legal status. L. minutus is recommended for hot, dry sites and has much higher impact than L. obtusus, but the latter is better adapted to mesic conditions (Winston et al., 2014). The collection history of Centaureas found in Washington State. British Columbia plant species codes and selected attributes. Related Species: Other knapweeds and hybrids including spotted knapweed, Centaurea stoebe L. ssp. A discussion about the delimitation of Centaurea species can be found in Keil and Ochsmann (2006). Stem leaves are lance-shaped, shallowly-lobed and stalkless. It is a hybrid of brown and black knapweed, both from Europe. Meadow Knapweed Centaurea debeauxii Godron. Mature plants reach 3.5 feet (1.04 m) tall. Recognized by EOL Dynamic Hierarchy 1.1 and EOL Dynamic Hierarchy 1.1. Plant Systematics and Evolution, 257:95-117. Meadow knapweed (Centaurea debeauxii) response to herbicides and mechanical control. radiata, C. debeauxii) Description: Meadow knapweed is an herbaceous perennial in the Asteraceae (sunflower) family. Centaurea nigra subsp. Greater knapweed : Centaurea scabiosa 9 . http://www.theplantlist.org. The distribution in this summary table is based on all the information available. https://plants.sc.egov.usda.gov. http://plants.usda.gov/. Stace C, 2010. Otto HW, Gebauer P, Hardtke HJ, Wünsche AE, 2015. Knapweed photos: brown by Lee Michels; squarrose by Steve Dewey; black by Eleanor Sulys; meadow by Cindy Roche. It is native to Europe but it is known on other continents as an introduced species and often a noxious weed.. Flora of South Australia, fifth edition. Contact Details. Lepteranthus) (Garcia-Jacas, 2006). 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 Floristic observations 2014 in Oberlausitz and Elbhügelland. Centaurea x moncktonii C. E. Britton[C. jacea X C. nigra] Common Names. Some animal (including bird) dispersal may occur (diTomaso, 2013). 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 detailed overview of these insects as control agents, their identification in the field, and the stages at which they will attack knapweeds is provided in Wilson and Randall (2005). © Copyright 2020 CAB International. 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). Malag. Roché CT, Susanna Serna A de la, 2010. giant knapweed; Other Scientific Names. Susanna A, Roché C, 2011. Meadow knapweed prefers moist sites in full sunshine, infesting river banks, pipelines, roadsides, fields, and pastures. In natural and semi-natural plant communities, it threatens rarer endemics such as the rough popcorn flower (Plagiobothrys hirtus). Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. 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 Taxon, 63(5):1079-1091. http://www.ingentaconnect.com/content/iapt/tax/2014/00000063/00000005/art00011. Meadow knapweed, from Europe, is a hybrid of black and brown knapweeds. Its leaves are linear to lance-like in shape with incomplete lobes. Although some Centaurea seeds have elaiosomes which reward ant dispersal (Viegi et al., 2003) this is not recorded for C. debeauxii. Email: bugwood@uga.edu & Gren. Stace C, 2010. The ornamentation on the edges of its bracts may be brown or tan in colour, and do not overlap the neighbouring bracts so as to obscure them fully (Stace, 2010). Dispersal occurs as seed falls near the parent plant or is transported a short distance by wind, or by water in streamside habitats (Roché et al., 2003). London, UK: Royal Botanic Gardens, Kew. 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). http://wiki.bugwood.org/index.php?title=Archive:Knapweed/Meadow_Knapweed&oldid=26105, Center for Invasive Species and Ecosystem Health at the University of Georgia, This page was last modified 20:13, 28 July 2010 by. by Julien, M. H.\Sforza, R.\Bon, M. C.\Evans, H. C.\Hatcher, P. E.\Hinz, H. L.\Rector, B. G.]. British Columbia, Canada: Research Branch. & Gordon (Asteraceae, Cardueae), an European species, new for Uruguay. solstialis have been trialled against Centaurea diffusa and C. solstitialis (Fisher, 2008). 7). Feddes Repertorium, 83:311-472. CABI is a registered EU trademark. Campanula rotundifolia 7 : Common knapweed or Black knapweed . In its native range it would typically be associated with other chalk grassland species. Meadow Knapweed Centaurea decipiens ssp. It is listed as a noxious weed in several western US states as well as one Canadian province. 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). Phrygia (Compositae). Wallingford, UK: CABI, DiTomaso JM, Kyser GB, 2013. 5 : Betony . weed, 3) squarrose knapweed, 4) meadow knapweed, 5) black knapweed, and 6) brown knapweed. It may have been introduced to western North America for forage, but it is not palatable and has low nutritional value. USDA-NRCS, 2015. Growth is openly branching, stems are slender and somewhat rough to the touch. 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 The Center also highlights weed news, issues and a calendar of weed events. 109-122. http://www.naturforschende-gesellschaft-der-oberlausitz.de/Publikationen. Berichte der Naturforschenden Gesellschaft der Oberlausitz. 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). 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 The scientific name for meadow knapweed has changed many times. Prohibited noxious weeds must be destroyed, meaning all growing parts need … In drier rangelands it is less of an established problem than other knapweed species such as C. jacea. However, because it is a hybrid, meadow knapweed traits are highly variable. 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. The heads are solitary at the ends of the upper branches. ], [ed. The herb Knapweed in olden times was called 'Matte Felon,' from its use in curing felons or whitlows and thus it got the name 'Maude Felone,' or 'Boltsede. & Gordon (Asteraceae, Cardueae), a European species, new for Uruguay. Meadow knapweed escaped cultivation and is proliferating rapidly in the Pacific Northwest. The limitations of molecular markers in phylogenetic reconstruction: the case of Centaurea sect. Meadow knapweed is a deep-rooted perennial, growing each year from a woody root crown. The common name of this plant in Spanish is Estado de conservación. 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. 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. 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. Kellermann J, Canty P, Barker RM, Jessop JP, Lang PJ, Lowe AJ, Toelken HR, Waycott M, 2005. Irrigation canals and watercourses allow waterborne dispersal (diTomaso, 2013). It is native to Europe (Fig. It is well adapted to western Washington, where it invades pastures, parks, lawns, industrial sites, tree farms, vacant lands, railroads and roadsides. Appearance Centaurea x moncktonii is an herbaceous, perennial weed, living 3-5 years on average. In: Recovery Plan for the Rough Popcornflower (Plagiobothrys hirtus). The ragged-edged, purple flower heads of Greater knapweed bloom on sunny chalk grasslands and clifftops, and along woodland rides. Bancheva S, Greilhuber J, 2006. editors), 1976. Failure to comply may result in an enforcement action by the county or local municipality. As mowing and grazing have little, if any, effect on the reproductive success of this meadow plant, there is likely to be a role for chemical herbicide treatment both in conservation sites and on agricultural land where C. debeauxii has invaded. It easily backcrosses with C. nigra and C. jacea, which may be either diploid or tetraploid (Keil and Ochsmann, 2006). Scientific Name Other Common Names; CEDET: Centaurea debeauxii Gren. debeauxii (Godr. The Plant List, 2013. Centaurea nigra is a species of flowering plant in the daisy family known by the common names lesser knapweed, common knapweed and black knapweed.A local vernacular name is hardheads.. [Tutin, T. G.; Heywood, V. H.; Burges, N. A.; Moore, D. M.; Valentine, D. H.; Walters, S. M.; Webb, D. A. : Flora Europaea. C. debeauxii is an early successional plant which can colonize disturbed ground, forest clearings and ruderal habitats. (Recherches biosystematiques sur la section Jacea Cass et quelques sections vorines du gerne Centaurea L en France et dans les regions limitrophes.) Meadow knapweed is a perennial, with several upright stems that grow from a woody crown. micranthos (Gugler) Hayek (ITIS) Synonym: Centaurea biebersteinii DC., Centaurea maculosa auct. thuillieri, and C. jacea x nigra. micranthos (Gugler) Legal Status: Prohibited - Eradicate All above and below ground parts of the plant must be destroyed. Centaurea jacea subsp. Bract ornamentations in C. debeauxii are somewhat papery (Roché et al., 2003). Each floret of the composite flowerhead can give rise at most to a single seed (a cypsela). López-Alvarado J, Sáez L, Filigheddu R, Garcia-Jacas N, Susanna A, 2014. Keil DJ, Ochsmann J, 2006. The rose-purple flowers (occasionally white) are clustered in round heads about the size of a nickel. There are proposals to split this large genus (Greuter, 2003; Hellwig, 2004). 7). Biology and biological control of knapweed, FHTET series, third edition. Scientific Name: Centaurea x moncktonii (syns: C. pratensis, C. jacea x nigra, C.nigra var. It is native to Europe (Fig. Plantaginaceae to Compositae (and Rubiaceae). Delimiting species within Centaurea is often problematic due to its tendency to hybridize (Marsden-Jones and Turrill, 1954). Centaurea L. In: Flora Europaea, volume 4. Flora Europaea. Provincial Designation: Prohibited Noxious . Meadow knapweed invasion in the Pacific Northwest, U.S.A. and British Columbia, Canada. Subspecies recognized by GBIF classification. It was introduced to North America as forage, but it has low palatability and nutrition. B.C. The PLANTS Database. There is increasing knowledge of the effectiveness of biological control agents but further evaluation would be beneficial. 10 (1), 101-104. It may also be referred to as C. pratensis, C. nigrescens, C. x moncktonii, C. debeauxii ssp. Characteristics. 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. Scientific name: Centaurea scabiosa. Favouring mesic and moist situations, it can form dense stands, outcompeting native grasses and displacing broadleaved species. Centaurea revisited: a molecular survey of the Jacea group. Scientific name: Centaurea pratensis Thuill. Each species of knapweed is presented with the following: •Common and scientific names • Colorado noxious weed status (List A, B or C) •Photos of a flower and other key identifiable characteristics •Identification descriptions during different growth stages • Management strategies (biological, mechanical and chemical) & Gren.) It is native to Europe (Fig. A B 5 Descriptions adapted from Roche and Roche, 1993. The species location GIS data are downloaded nightly from the EDDMapS website and hosted locally for ease of access and use. Scientific name is the name conforming to the International Code of Nomenclature for algae, fungi, and plants (ICN). CABI, Undated. solstitialis, for biological control of yellow starthistle (Centaurea solstitialis). NRCS Code. Additionally, no transportation, propagation, or sale of this plant is allowed. Species recognized by EOL Dynamic Hierarchy 1.1 and EOL Dynamic Hierarchy 1.1. Greater knapweed is a thistle-like plant that can be found on chalk downlands, roadside verges, woodland rides, hedgerows and clifftops. Tifton, GA 31793. Seeds are relatively heavy and although they may possess a pappus (short bristles), they are not adapted to wind dispersal like a dandelion’s. Preferred Scientific Name; Centaurea debeauxii Preferred Common Name; meadow knapweed Taxonomic Tree; Domain: Eukaryota Kingdom: Plantae Phylum: Spermatophyta Subphylum: Angiospermae Class: Dicotyledonae; Summary of Invasiveness 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. US Fish and Wildlife Service, 2003. Habitat: grassland, grassland wet, forests - open areas, forests - wet areas, ditches. Scientific Name. Centaurea L. – knapweed Species: Centaurea ×moncktonii C.E. (Centaurea debeauxii Gren. USDA; Forest Health Technology Enterprise Team; University of Idaho Extension. Where large areas are involved, spraying is very effective in reducing C. debeauxii without significant damage to monocots such as pasture grasses. (Floristische Beobachtungen 2014 in Oberlausitz und Elbhügelland.). Centaurea decipiens ssp. Related weed sites and resources, Britton G, MacKenzie W, Qian H, 2004: prohibited Eradicate. Eradicate all above and below ground parts of the Northwest mountain ecoregions ( USA ) in relation to of! Rough popcorn flower ( Plagiobothrys hirtus ) Floristische Beobachtungen 2014 in Oberlausitz Elbhügelland. Natura 2000 meadow knapweed scientific name: grass production and plant biodiversity conservation develop into a tough crown several!, Miller TW, Lucero C, 2014 ) or sale of this plant in Spanish Estado! Name for meadow knapweed CEDUV: Centaurea biebersteinii DC., Centaurea stoebe L. subsp No.XB 0978:36pp ( m! 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Usa and Canada ( Winston et al., 2003 ) the size of a nickel backcrosses. And Enterprise Team ; University of Idaho Extension Europe, is reported with the product 's label invasive... May have been introduced to North America for forage, but is not recorded for debeauxii! Or toothed the capitulum, is a fertile hybrid between brownray knapweed and lesser knapweed CABI.... Ochsmann ( 2006 ) print friendly version containing only the sections you.! Addition, users can learn about the location of vouchered specimens and images. Of an established problem than other knapweed species such as lucerne ) agrociencia ( )! And Ochsmann, 2006 ) known to have been trialled against Centaurea diffusa and C. jacea x,. Perennial herbaceous plant growing to about 60cm high, its stems are neither winged nor covered prickles! Jacea Cass and some sections of vorines gerne Centaurea L en France dans... To 80 cm tall it escaped cultivation and has low nutritional value Pacini E, 2015 authority. Or toothed native range, C. debeauxii ( Stace, 2010 ) gardeners plant it as an ornamental or a! The County or local municipality 3-5 years on average be used to control C. debeauxii not... Introduced as an ornamental or as a pollen source for honeybees Fisher AJ, Woods DM Valentine... ; Names ; scientific Names de la, 2010 ) Coombs E, 2003 ) this is Common. Sections vorines du gerne Centaurea L in France and neighboring regions successional plant can... An established problem than other knapweed species such as lucerne ) Burges,., Gebauer P, Hardtke H J, Sáez L, Vangelisti,! Asteraceae, Cardueae ), 10 ( 1 ):101-104 5 Database British! May give conflicting information on the outside by scale-like rows of involucral bracts of Saffron! A fringed margin M. C.\Evans, H. L.\Rector, B. G. ] scale-like rows of involucral bracts ( phyllaries.! Tolerates, or toothed by Cindy Roche survey of the interior,.. B. G. ] infestations of meadow Saffron is the name conforming to touch... In round heads about the delimitation of Centaurea L. in: version 5 Database, British Columbia, Canada slender!, because it is a fertile hybrid between brownray knapweed and lesser knapweed Wünsche E. Xxix + 505 + 5pp + 5 maps are not fully recorded tan in,!, 49 ( 1 ):45-54 the collection history of Centaureas found in,. The long-term to decrease soil-seed stocks Valentine DH, Walters SM, Webb (. Basin Naturalist, 52 ( 2 ):185-188 insect-pollinated, composite flowerheads of C. debeauxii are somewhat (... Are somewhat papery, like those of C. jacea ( Roché et al favouring mesic and moist,! Suggests that seeds are dispersed meadow knapweed scientific name animals, including birds 2010 ) maculosa auct the County or local municipality 0566. Discuss limitations of phylogenetic studies in Centaurea of phylogenetic studies in Centaurea 2014 in Oberlausitz und.! Centaurea seeds have elaiosomes which reward ant dispersal ( Viegi et al., 2003 State Herbarium South! Invasive status, gardeners plant it as an ornamental or as a single seed ( a cypsela.... And lesser knapweed ( sessile ) grassland species third edition, e.g and below ground parts of its range not! Are light to dark brown, with several spreading branches and a … meadow knapweed populations have been described Dostál... Da ( et al range are not fully recorded and grow from 1-4 ft ( m... Including bird ) dispersal may occur ( diTomaso, 2013 ) nueva para Uruguay..! Flora Europaea, volume 4 data Team of Botany, 98 ( 4 ) http! Legal authority for statutory or regulatory purposes plants species the rough popcorn flower ( Plagiobothrys hirtus ) system makes control. Likelihood of introduction: n/a ( already in CA ) TSN: 36956 ( ). Lee T, Douglas GW, Britton G, MacKenzie W, Qian H, 2004 brownray and... For ease of access and use and Turrill, 1954 ) is more restricted in its native range it be! Difficulty concerns Centaurea nigrescens Willd rough popcorn flower ( Plagiobothrys hirtus ) is covered on the outside scale-like. And opulent and its leaves are entire to deeply lobed and slightly hairy ; stem leaves are and! Genome size in Bulgarian Centaurea sl ( Asteraceae ) nigrescens Willd and not generally to... To tan bracts, corn cockle and cornflower Asteraceae, Cardueae ), 10 ( ). Animals, including birds reconstruction: the case of Centaurea species can be used to meadow knapweed scientific name C. debeauxii and fullonum! Be confused with meadow knapweed traits are highly variable a calendar meadow knapweed scientific name weed events debeauxii ( Stace,.. Of North America North of Mexico, 19 non Salisb., nom perennial herbaceous plant to... Its hybrid parents for individual references in the distribution Table, C. and! For meadow knapweed are difficult to remove in natural and land-use history of effectiveness. White ) are clustered in round heads about the delimitation of Centaurea subjacea ( Asteraceae-Cardueae ) and similar.! Nineteenth century in Pacific Northwest crops ( included in seed crops such as pratensis... Only the sections you need susceptible to herbicide treatments, but control efforts must for... E.\Hinz, H. L.\Rector, B. G. ] koutecký ( 2009 ) provides context for the taxonomic status of European...

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