Centaurea nigra (Black Knapweed)

Centaurea nigra

Centaurea nigra L.

Centaurea nigra L. var. radiata DC.

Black 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	nigra	Black, referring to the color of the seeds

[An article has not been written yet.]

Centaurea nigra description by Thomas H. Kent, last updated 25 May 2020.

7/17/2010 · Mackworth Island, Falmouth, ME
≈ 5 × 3½" (13 × 9.2 cm) ID is uncertain

7/17/2010 · Mackworth Island, Falmouth, ME
≈ 7 × 7" (16 × 18 cm) ID is uncertain

7/17/2010 · Mackworth Island, Falmouth, ME
≈ 2½ × 2½" (7.3 × 6.8 cm) ID is uncertain

7/17/2010 · Mackworth Island, Falmouth, ME
≈ 7 × 4½" (17 × 11 cm) ID is uncertain

9/1/2018 · Bates Land and Blackman Land, Groton Conservation Trust, Groton, MA
≈ 3½ × 3" (9.4 × 8.4 cm) ID is uncertain

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