an 
a 
Bul. 824, U. S. Dept. of Agriculture. PPA Eee 
Fic. 1.—‘‘PUCKERED’’ PAPILLA, RAY FIG. 2.—MARGINAL PAPILL&, RAY FLORET. 
FLORET. (X290.) (CKD (05) 
Fic. 5.—BRACT TISSUES. (X120.) Fic. 6.—STEM TISSUES. (X84.) 
