CHAPTER Iir. 



ANEMOPHILOUS. WivsJ^ 



The flowers in this class are usually dull in color, con- 

 tain no nectar; the sexes are often separated, i. e , they occur 

 in dififerent flowers, one flower staminate, the other pistillate. 

 Both kinds of flowers are either on the same plant, when 

 they are said to be monoecious, or when one plant bears 

 either staminate or pistillate flowers it is said to be dioecious. 

 In wind pollinated flowers the anthers are borne in such a 

 way that the slightest breeze will cause the pollen to be 

 shaken out. The anthers always contain an abundance of 

 pollen. The pollen graina are light, not viscid, and easily 

 carried by the wind. 



Grasses These important plants, numerous in species, 



are almost exclusively pollinated by the wind. 



The flowers are usually hermaphrodite, some monoecious and 



some dioecious. In quite a number there is a difl'erence in 



the time of maturing of stamens and pistil. 



Lodicules. Many of the flowers of grasses have a pair of 

 small scales (lodicules). They are close together, and the 

 bases are somewhat grown together. Hackel says. "The 

 rapid swelling of the bases, at least, causes the separation of 

 the flowering glume and palea, and consequently the opening 

 of the flower." In grasses where these scales swell but little, 

 the flowers do not open very far. When they are absent the 

 spikelets are closed at the sides and the stamens and pistil 

 only protrude at the apex. These scales are very turgid at 

 the time of flowering. 



