Centaurea diffusa Lamarck in J. Lamarck et al. (Q2995)

taxon name

Centaurea diffusa

1 reference

taxon authority

Lamarck

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taxon rank

species

1 reference

taxon status

accepted

1 reference

common name

centaurée diffuse (French)

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diffuse knapweed (English)

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white knapweed (English)

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tumble knapweed (English)

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Diffuse or tumble or white knapweed (English)

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centaurée diffuse (English)

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VasCan taxon numeric id

2964

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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-AB

present

introduced

1 reference

Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.

CA-SK

doubtful

1 reference

Harms, V.L. 2006. Annotated catalogue of Saskatchewan vascular plants. http://www.biodiversity.sk.ca/Docs/AnnotatedCatalogueSKVascPlants2006.pdf

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

Herbier Marie-Victorin (MT). Université de Montréal, Montréal, QC. Specimen. http://www.biodiversite.umontreal.ca/herbier-marie-victorin?lang=en

CA-YT

excluded

1 reference

Bennett, B. Yukon List. (pers. comm.)

CA-AB

Alta.

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CA-BC

B.C.

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CA-ON

Ont.

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CA-QC

Que.

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CA-SK

Sask.

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CA-YT

Yukon

1 reference

US-AZ

Ariz.

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US-CA

Calif.

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US-CO

Colo.

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US-CT

Conn.

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US-ID

Idaho

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US-IL

Ill.

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US-IN

Ind.

1 reference

US-IA

Iowa

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US-KY

Ky.

1 reference

US-MA

Mass.

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US-MI

Mich.

1 reference

US-MO

Mo.

1 reference

US-MT

Mont.

1 reference

US-NE

Nebr.

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US-NV

Nev.

1 reference

US-NH

N.H.

1 reference

US-NJ

N.J.

1 reference

US-NM

N.Mex.

1 reference

US-OR

Oreg.

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US-RI

R.I.

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US-TN

Tenn.

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US-UT

Utah

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US-WA

Wash.

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US-WY

Wyo.

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Europe

1 reference

Centaurea Linnaeus nom. cons.

parent taxon

1 reference

taxon habit

herb

1 reference

GBIF taxon key

3128962

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Global Biodiversity Information Facility

IUCN Redlist Category

NE

1 reference

Global Biodiversity Information Facility

phenology

Flowering summer (Jun–Aug).

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taxon habitat

sites

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grasslands

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woodlands

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open coniferous forests

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elevation

100–2200 m

measurement range from

100 meter

measurement range to

2,200 meter

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special status

I

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taxon description fragment

Stems 1–several, much-branched throughout, puberulent and ± gray tomentose.

1 reference

d0_s1

Leaves hispidulous and ± short-tomentose;

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d0_s2

basal and proximal cauline petiolate, often absent at anthesis, blades 10–20 cm, margins bipinnately dissected into narrow lobes;

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d0_s3

mid cauline sessile, bipinnately dissected;

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d0_s4

distal much smaller, entire or pinnately lobed.

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d0_s5

Heads disciform, in open paniculiform arrays.

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d0_s6

Involucres narrowly ovoid or cylindric, 10–13 × 3–5 mm.

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d0_s7

Principal phyllaries: bodies pale green, ovate to lanceolate, glabrous or finely tomentose, with a few prominent parallel veins, margins and erect appendages fringed with slender stramineous spines, each phyllary tipped by spine 1–3 mm.

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d0_s8

Inner phyllaries lanceolate, ± acute, appendage lacerate or spine-tipped.

1 reference