Vascular Plants of the Gila Wilderness

Presented in Association with the
Western New Mexico University Department of Natural Sciences

Centaurea stoebe Linnaeus subsp. micranthos (S.G. Gmelin ex Gugler) Hayek
(Spotted Knapweed)


Family: Asteraceae

Status: Exotic, Noxious Weed (Class A, with limited distribution within the state)

Synonyms:
Acosta maculosa of American authors
Centaurea maculosa Lamarck subsp. micranthos S.G. Gmelin ex Gugler

Centaurea stoebe grows on roadsides in disturbed areas. The inflorescence is bright pinkish to purple. The phyllaries are rather remarkable in having a greenish base with a brownish, fringed apex. The pappus is of rather short 2-3 mm bristles. The leaves are deeply dissected below, but lobed or entire above.
Please click on an image for a larger file.



Centaurea stoebe subsp. micranthos, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014



Centaurea stoebe subsp. micranthos, inflorescence, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014



Centaurea stoebe subsp. micranthos, inflorescence, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014



Centaurea stoebe subsp. micranthos, inflorescence, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014



Centaurea stoebe subsp. micranthos, leaf, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014



Centaurea stoebe subsp. micranthos, leaf measured, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014



Centaurea stoebe subsp. micranthos, phyllary, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014



Centaurea stoebe subsp. micranthos, pappus, photo Russ Kleinman & Bill Norris, Silver City along Hwy 180, April 29, 2014


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