SUNFLOWER FAMILY 545 
7. Centaurea jacea L. Brown Knapweed. Fig. 5945. 
Centaurea jacea L. Sp. Pl. 914. 1753 
oe the stems eae or Ferree from a woody root- sagdviainn pale green, thinly 
mostly 5-10 dm 
and pubescent, becoming scp: sabe stems erect, 
veniane near the mid le or atoee, the Srenthes rather 
r 
few and ate. -B: and lower cag = s oe sparse, oblanceolate or aural elliptic, 
the blade - — — oe and 3 cm. wide, entire or coarsely few-lobed, pubescent above below, 
scabrous s, long- ine salts. Pa betiole slender, nearly as long as the blade or longer, 
the adie! cantina: eves lanceolate, oblon oblanceolate, entire, serrulate or shallowly 
lobed, Sia the uppermost leaves similar ae smalle 
hig a solitary at the ends of the branches; invo 
i i b the phy 
tip, entire to e; flowers rose to purple, rarely white, the 
outermost corollas enla nspicuous ; parece oblongish, 3-3.5 mm. long, light brown 
with a few mega lennttoeeal lines ; pappus none or represented by a few very short scales less 
than 0.5 mm. lon 
Se be Scene = nh idee and along roads; Washington and Oregon, chiefly west of the Cascade Mountains; 
east to the Atlantic. Naturalized from Europe. j une—Aug. 
a 
ue Ui 
REN M ws y 
5944. Centaurea cyanus 5946. PORRRE e selina 
5945. Centaurea jacea 5947. Centaurea nigra 
