Centaurea nigrescens Willdenow (Q3001)

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Centaurea nigrescens is a taxon with the rank species within the genus Centaurea
Language Label Description Also known as
English
Centaurea nigrescens Willdenow
Centaurea nigrescens is a taxon with the rank species within the genus Centaurea

    Statements

    taxon/id/Centaurea nigrescens Willdenow
    0 references
    Centaurea nigrescens Willdenow
    Centaurea nigrescens
    Willdenow
    FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
    accepted
    centaurée noirâtre (French)
    centaurée noircissante (French)
    short-fringed knapweed (English)
    short-fringe starthistle (English)
    Tyrol knapweed (English)
    Vochin knapweed (English)
    Tyrol or short-fringed or Vochin knapweed (English)
    centaurée noirâtre (English)
    1 reference
    Klinkenberg, B. (ed.). 2010+. E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab. for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver, B.C. http://www.eflora.bc.ca http://www.eflora.bc.ca/
    1 reference
    Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
    1 reference
    Marie-Victorin, Fr. 1995. Flore laurentienne. 3e éd. Mise à jour et annotée par L. Brouillet, S.G. Hay, I. Goulet, M. Blondeau, J. Cayouette et J. Labrecque. Gaétan Morin éditeur. 1093 pp.
    Newfoundland, CA
    1 reference
    Meades, S., S.G. Hay & L. Brouillet. 2000. Annotated Checklist of the Vascular Plants of Newfoundland and Labrador. Published in association with A Digital Flora of Newfoundland and Labrador Vascular Plants. http://www.digitalnaturalhistory.com/meades.htm (consulted 2009-09-02) http://www.digitalnaturalhistory.com/meades.htm
    1 reference
    Etcheberry, R., D. Abraham & S. Muller. 2010. Nouvelles espèces de plantes vasculaires pour les îles Saint-Pierre-et-Miquelon et commentaires sur la flore de l’archipel. Bulletin de la Société des naturalistes luxembourgeois 111: 85-105. http://snl.lu/publications/bulletin/SNL_2010_111_085_105.pdf
    Europe
    Flowering summer–fall (Jun–Oct).
    roadsides
    fields
    waste areas
    Stems 1–few, erect or ascending, openly branched distally, villous to scabrous with septate hairs and loosely tomentose, ± glabrate.
    Leaves: basal and proximal cauline, petiolate, blades oblanceolate or elliptic, 5–25 cm, margins entire or shallowly dentate to irregularly pinnately lobed;
    distal cauline sessile, not decurrent, blades linear to lanceolate, gradually smaller, entire or dentate.
    Heads radiant or discoid, in few-headed corymbiform arrays, borne on leafy-bracted peduncles.
    Involucres 15–18 mm, subcylindric to ovoid or campanulate, usually longer than wide, even when pressed.
    Principal phyllaries: bodies lanceolate to ovate, loosely tomentose or glabrous, usually not fully covered by narrow appendages, these erect, overlapping, dark-brown to black, flat, margins pectinately dissected into 6–8 pairs of wiry lobes.
    Inner phyllaries: tips truncate, irregularly dentate or lobed.
    Florets 40–100+, all fertile or peripheral sterile;
    corollas purple (rarely white), those of sterile florets ± expanded and exceeding corollas of fertile florets, those of fertile florets 15–18 mm.
    Cypselae tan, 2.5–3 mm, finely hairy;
    pappi 0 or of many unequal, sometimes caducous bristles 0.5–1 mm. 2n = 22 (Hungary), 44 (Hungary; Italy).