800 HOW CROPS GROW. 



ter-cress, etc., are termed Cruciferous plants, because their 

 flowers ha\e four petals arranged like the four arms of a 

 cross, (Latin, crux). 



The flowers of a large natural order of plants are ar 

 ranged side by side, often in great numbers, on the expand 

 ed extremity of the flower-stem. Examples are the thistle, 

 dandelion, sun-flower, artichoke, China-aster, etc., which, 

 from bearing such compound heads, are called Composite 

 plants. 



The Coniferous (cone-bearing) plants comprise the 

 pines, larches, hemlocks, etc., whose flowers are arranged 

 in conical receptacles. 



The flowers of the carrot, parsnip, and caraway, are ar 

 ranged at the extremities of stalks which radiate from a 

 central stem like the arms of an umbrella ; hence they are 

 called Umbelliferous plants, (from umbel y Latin, for little 

 screen). 



a 



THE FRUIT 



THE FRUIT comprises the seed-vessel and the seed, to 

 gether with their various appendages. 



THE SEED-VESSEL, consisting of the base of the pistil in 

 its matured state, exhibits a great variety of forms and 

 characters, which serve, chiefly, to define the different 

 kinds of Fruits. Of these we shall only adduce such as 

 are of common occurrence and belong to the farm. 



The Nut has a hard, leathery or bony shell, that does 

 not open spontaneously. Examples are the acorn, chest 

 nut, beech-nut, and hazel-nut. The ( up of the acorn and 

 the bur of the others is a sort of fleshy calyx. 



The Stone-fruit or Drupe is a nut enveloped by a 

 fleshy or leathery coating, like the peach, cherry, and plum, 



