Centaurea jacea (Brown knapweed)

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Centaurea jacea L.

Brown knapweed

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Asteridae	A large class that encompasses asters
Order	Asterales	Flowering plants with a central disk flower and surrounding petals, like daisies
Family	Asteraceae	The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
Genus	Centaurea	From 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
Species	jacea

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7/20/2023 · Curtis Farm Preserve, Harpswell, Maine

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

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 3 × 3" (7.9 × 8 cm)

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

6/29/2014 · Mount Agamenticus, York, Maine
≈ 8 × 5" (21 × 13 cm)

7/12/2015 · Rte. 108, Stowe, Vermont
≈ 3½ × 3½" (9.5 × 9.1 cm) ID is uncertain

7/20/2023 · Curtis Farm Preserve, Harpswell, Maine

7/12/2015 · Rte. 108, Stowe, Vermont
≈ 4½ × 4" (11 × 10 cm) ID is uncertain

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

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

7/12/2015 · Rte. 108, Stowe, Vermont
≈ 3½ × 3" (9 × 8.4 cm) ID is uncertain

Centaurea jacea description by Thomas H. Kent, last updated 26 Jul 2023.

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6/29/2014 · Mount Agamenticus, York, Maine
≈ 6 × 6" (14 × 15 cm)

7/20/2023 · Curtis Farm Preserve, Harpswell, Maine

7/12/2015 · Rte. 108, Stowe, Vermont
≈ 3½ × 3½" (9.5 × 8.7 cm) ID is uncertain

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

7/20/2023 · Curtis Farm Preserve, Harpswell, Maine

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

7/17/2010 · Mackworth Island, Falmouth, Maine
≈ 3½ × 4" (9.7 × 10 cm)

7/31/2012 · Bemis Rd Conservation Area, Pepperell, Massachusetts
≈ 3½ × 3" (8.6 × 8.1 cm) ID is uncertain

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

7/12/2015 · Rte. 108, Stowe, Vermont
≈ 5 × 3½" (13 × 9.3 cm) ID is uncertain

7/20/2023 · Curtis Farm Preserve, Harpswell, Maine

Range:

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