centaurea

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centaurea

(ˌsɛntɔːˈrɪə; sɛnˈtɔːrɪə)
n
(Plants) another name for centaury2
[C19: ultimately from Greek Kentauros the Centaur; see centaury]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

cen•tau•re•a

(sɛnˌtɔr i ə)

n., pl. -re•as.
any of numerous composite plants of the genus Centaurea, having tubular flowers in a variety of colors, as the cornflower.
[< New Latin (Linnaeus), alter. of Medieval Latin centauria]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.centaurea - knapweedCentaurea - knapweed; star thistle    
asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs
aster family, Asteraceae, Compositae, family Asteraceae, family Compositae - plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia
centaury - any plant of the genus Centaurea
bachelor's button, bluebottle, Centaurea cyanus, cornflower - an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers
Centaurea imperialis, sweet sultan - perennial of mountains of Iran and Iraq; cultivated for its fragrant rose-pink flowers
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Candytuft is a favourite with them along with the centaureas known as knapweed and sweet sultan.
A field experiment was designed to test the direct effect of Centaurea on Festuca idahoensis Elmer., the direct effects of Agapeta on Centaurea, and the indirect effect of Agapeta on Festuca.
We observed mature Agapeta moths in Centaurea foliage 2 yr after establishing the treatments, suggesting that Agapeta may have dispersed to treatment plots that were intended to be free from herbivory.
Twenty-six Centaurea at the rosette stage were collected in the field, and each was transplanted into an 8-L pot containing field soil of the same type used in the common garden experiment and grown in a naturally lighted greenhouse.
A single 2 cm diameter polyester capsule (Unibest, Bozeman, Montana, USA) containing 1100 [m.sup.2] surface area of nonionic carbonaceous resin (Ambersorb 563, Rohm and Haas, Philadelphia, Pennsylvania, USA) was buried within the root mass of each Centaurea at the time of transplanting.
In the field, Centaurea severely suppressed Festuca reproduction [ILLUSTRATION FOR FIGURE 1 OMITTED] and aboveground biomass (Festuca alone, 0.85 [+ or -] 0.17 g/plant, Festuca with Centaurea, 0.33 [+ or -] 0.11 g/plant; ANOVA, F = 7.62; df = 1, 19; P = 0.012), but Centaurea biomass was not significantly affected by exposure to Agapeta herbivory for two growing seasons (ANOVA, F = 1.68; df = 1, 19; P = 0.21).
In the greenhouse experiment, Festuca root biomass was 0.33 [+ or -] 0.04 g when neighboring Centaurea had been attacked by cabbage loopers, but was 0.41 [+ or -] 0.04 g when Centaurea was protected from herbivory ([ILLUSTRATION FOR FIGURE 2 OMITTED]; ANOVA, initial Festuca size as covariate, [F.sub.treatment] = 6.75; df = 1, 25; P = 0.016).
Contrary to expectations for biocontrols in general, in both experiments, Centaurea that had been exposed to herbivory had greater negative effects on Festuca than Centaurea that were kept free from herbivory; and, in the field experiment, Agapeta did not significantly decrease Centaurea biomass.