Centaurea jacea Linnaeus (Q2996)

taxon name

Centaurea jacea

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taxon authority

Linnaeus

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taxon rank

species

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taxon status

accepted

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common name

centaurée jacée (French)

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jacée des prés (French)

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brown knapweed (English)

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brown-rayed knapweed (English)

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brown starthistle (English)

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meadow knapweed (English)

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Brown or brown-ray knapweed (English)

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centaurée jacée (English)

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jacée des prés (English)

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VasCan taxon numeric id

2965

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distribution

CA-BC

present

introduced

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/

CA-ON

present

introduced

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/

CA-QC

present

introduced

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.

CA-NB

present

introduced

1 reference

Hinds, H.R. 2000. Flora of New Brunswick : a manual for the identification of the vascular plants of New Brunswick. 2nd edition. Biology Department, University of New Brunswick, Fredericton. 699 pp.

Greenland, GL

present

introduced

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Greenland

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CA-BC

B.C.

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CA-NB

N.B.

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CA-ON

Ont.

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CA-QC

Que.

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US-CA

Calif.

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US-CT

Conn.

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US-DE

Del.

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US-ID

Idaho

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US-IL

Ill.

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US-IN

Ind.

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US-IA

Iowa

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US-KY

Ky.

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US-ME

Maine

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US-MD

Md.

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US-MA

Mass.

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US-MI

Mich.

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US-MT

Mont.

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US-NH

N.H.

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US-NJ

N.J.

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US-NY

N.Y.

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US-OH

Ohio

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US-OR

Oreg.

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US-PA

Pa.

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US-RI

R.I.

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US-UT

Utah

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US-VT

Vt.

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US-VA

Va.

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US-WA

Wash.

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US-WV

W.Va.

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US-WI

Wis.

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Eurasia

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Centaurea Linnaeus nom. cons.

parent taxon

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taxon habit

herb

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GBIF taxon key

3128547

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Global Biodiversity Information Facility

IUCN Redlist Category

NE

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Global Biodiversity Information Facility

phenology

Flowering summer–fall (Jun–Oct).

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taxon habitat

roadsides

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fields

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pastures

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waste ground

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elevation

50–1300 m

measurement range from

50 meter

measurement range to

1,300 meter

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special status

I

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taxon description fragment

Stems 1–few, erect or ascending, openly branched distally, villous to scabrous with septate hairs, loosely tomentose, ± glabrate.

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d0_s1

Leaves: basal and proximal cauline petiolate, blades oblanceolate or elliptic, 5–25 cm, margins entire or shallowly dentate to irregularly pinnately lobed;

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d0_s2

distal cauline sessile, not decurrent, gradually smaller, blades linear to lanceolate, entire or dentate.

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d0_s3

Heads radiant, in few-headed corymbiform arrays, leafy-bracted pedunculate.

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d0_s4

Involucres ovoid to campanulate or hemispheric, 15–18 mm, usually about as wide as high.

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d0_s5

Principal phyllaries: bodies lanceolate to ovate, loosely tomentose or glabrous, usually concealed by expanded appendages, appendages usually light-brown, erect, overlapping, ± concave, usually roundish, margins pale, broad, entire to coarsely dentate, membranous.

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d0_s6

Inner phyllaries: tips truncate, irregularly dentate or lobed.

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