ARRANGEMENT OF FLOWERS ON THE STEM 189 



Fig. 133.— Head of Yairow. 



^, top view. (Magnified.) i, lengthwise section. (Magnified.) re, receptacle ; i, 

 involucre ; r, ray-flowers ; d, disk-flowers ; c, corolla ; s, Btigina ; ch, chaff, 

 or bracts of receptacle. 



Fie. 134. 

 Paipiole of Oat. 



Fig. 135. —Compound Umbel 

 of Carrot. 



