Bul. 824, U. S. Dept. of Agriculture. 
eT ee 
a 
ONC oe gee 
SSF = 3 DS LAS east 
Fig. |1.—CRYSTALS, DISK FLORET. (X1I96.) 
P= = 
Po = ~~ os 
y <4 2 
A oth = ~~ 
yo Se N 
fo ; ‘ 
f < ~ 
| |) 
E SS : 
ES Sees Fe 
a = 
| ea 
7 
SS 7 
x — 
x NS Lee, BS 7 A 
SS ANS - 
Se el 
FiG. 38.—POLLEN GRAIN. (X290.) 
Fig. 5.—ACHENE TISSUE AND CRYSTALS. 
(X204,) 
CART Er 
7 
PEATE lle 
Fic. 2.—TOOTH, DISK FLORET. (X1I40.) 
FIG. 4.—POLLEN GRAINS. (X140.) 
U 
Esl 
cae 
Co 
Fic. 6.—CRYSTALS FROM ACHENE. 
(MAGNIFIED.) 
