37 
¢Centaurea maculosa Lam., spotted knapweed [C. stoebe L. ssp. 
stoebe] (Mihlenbach, 1979, 1983; Moore and Frankton, 
1974), p. 1628 
¢C. melitensis L., Maltese star thistle, p. 1626 
¢C. nigra L., knapweed, Spanish buttons, p. 1626 
¢C. nigrescens Willd., knapweed [S: C. vochinensis Bernh. ex 
Reichb.; M: C. dubia Suter ssp. vochinensis (Bernh. ex 
Reichb.) Hayek] (Moore and Frankton, 1974), p. 1626 
#C. repens L., Russian knapweed, p. 1626 
¢C. solstitialis L., yellow star thistle, Barnaby’s thistle, p. 1625 
CHAETOPAPPA 
Chaetopappa asteroides DC., p. 1500 
steroides 
CHRYSANTHEMUM 
see BALSAMITA, 
LEUCANTHEMUM, TANACETUM) 
CHRYSOPSIS, golden aster 
(see also HETEROTHECA 
Chrysopsis pilosa Nutt., p. 1480 
CICHORIUM, chickory 
¢Cichorium intybus L., common chickory, blue sailors, p. 1629 
f. album Neum. [M: C. intybus] (we have arbitrarily chosen 
to recognize the white-flowered form, although the 
validity of maintaining this morph has not been 
investigated in detail 
f. intybus 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
