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Centaurea jacea L.

 

Brown knapweed

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassAsteridaeA large class that encompasses asters
OrderAsteralesFlowering plants with a central disk flower and surrounding petals, like daisies
FamilyAsteraceaeThe aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
GenusCentaureaFrom the Latin and a reference to the Centaur Chiron who was supposed to have discovered the medicinal uses of a plant in Greece that came to be called Centaury
Speciesjacea

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Centaurea jacea (brown knapweed)

7/31/2012 · Bemis Rd Conservation Area, Pepperell, Mass­a­chu­setts
≈ 2½ × 2½" (6.7 × 6.5 cm) ID is uncertain

Centaurea jacea (brown knapweed)

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 5 × 3½" (13 × 9.2 cm)

Centaurea jacea (brown knapweed)

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 7 × 7" (16 × 18 cm)

Centaurea jacea (brown knapweed)

6/29/2014 · Mount Agamenticus, York, Maine
≈ 9 × 6" (23 × 16 cm)

Centaurea jacea description by Thomas H. Kent, last updated 21 Aug 2020.

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Centaurea jacea (brown knapweed)

7/12/2015 · Rte. 108, Stowe, Ver­mont
≈ 7 × 4½" (16 × 11 cm) ID is uncertain

Centaurea jacea (brown knapweed)

7/12/2015 · Rte. 108, Stowe, Ver­mont
≈ 5 × 4" (13 × 10 cm) ID is uncertain

Centaurea jacea (brown knapweed)

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 2½ × 2½" (7.3 × 6.8 cm)

Centaurea jacea (brown knapweed)

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 9 × 6" (22 × 14 cm)

Centaurea jacea (brown knapweed)

7/12/2015 · Rte. 108, Stowe, Ver­mont
≈ 7 × 4½" (16 × 11 cm) ID is uncertain

Centaurea jacea (brown knapweed)

6/29/2014 · Mount Agamenticus, York, Maine
≈ 9 × 6" (22 × 15 cm)

Centaurea jacea (brown knapweed)

7/12/2015 · Rte. 108, Stowe, Ver­mont
≈ 3½ × 3" (9.4 × 8.4 cm) ID is uncertain

Centaurea jacea (brown knapweed)

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 2½ × 3½" (6.6 × 9.8 cm)

Centaurea jacea (brown knapweed)

6/29/2014 · Mount Agamenticus, York, Maine
≈ 7 × 4½" (18 × 12 cm)

Centaurea jacea (brown knapweed)

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 7 × 4½" (17 × 11 cm)

Centaurea jacea (brown knapweed)

7/31/2012 · Bemis Rd Conservation Area, Pepperell, Mass­a­chu­setts
≈ 5 × 3½" (13 × 9.2 cm) ID is uncertain

Centaurea jacea (brown knapweed)

7/31/2012 · Bemis Rd Conservation Area, Pepperell, Mass­a­chu­setts
≈ 2½ × 3½" (6.6 × 9.8 cm) ID is uncertain

Centaurea jacea (brown knapweed)

7/12/2015 · Rte. 108, Stowe, Ver­mont
≈ 7 × 4½" (18 × 12 cm) ID is uncertain

Range:

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