250 TREATISE ON FRUIT TREES. 



They're dark brown on the side in the sun and lighter or yellow on the shaded side. 

 Sometimes they're situated in small, not very deep recesses. 



When M. du Chesne planted seeds of the hautbois strawberry plants, they 

 produced male & female individuals in approximately equal numbers. 



XV . Rough STRA WBERR Y PLANT with sterile male flower. 

 Male hautbois strawberry plant. 



The essential difference between the male and female hautbois strawberry plants 

 is in the flower's stamens. In the male the filaments are two to three lignes long; the tips 

 are extremely big & are full of germinati ve pollen. The defects in the pistils aren't at all 

 apparent, & the reason for their sterility is unknown. They seem to be just as well formed 

 as those in the female hautbois flowers. It's only when they dry up after the flower has 

 faded that they reveal what couldn't even have been suspected while it was alive. The 

 receptacle is very much smaller & isn't as high as the one in the female hautbois flower. 

 However, all other parts of this strawberry plant, runners, upright shoots, leaves, petals, 

 &c, are larger than those of the female hautbois, the inevitable consequence of the 

 greater vigor of this sterile individual than that of the female plant which is exhausted & 

 weakened by its productivity. 



XVI. Rough STRAWBERRY PLANT with female flower, red fruit, flavor of berries of ML Ida. 

 Raspberry STRAWBERRY PLANT. 



The two sexes of this strawberry plant are on separate individual plants as in the 

 hautbois. It's so completely similar to that one in every respect that I won't even describe 

 it. I'll merely point out the distinguishing features. 



