OUTLINES OP BOTANY. XXXV 



which is considered the smaller or of the least importance, is said to be 

 adnate to the other. 



free, when neither coherent nor connate. 



distinct is also used in the same sense, but is also applied to parti 

 distinctly visible or distinctly limited. 



13. The Fruit. 



146. The Pruit (15) consists of the ovary and whatever other parts of 

 the flower are persistent (i.e. persist at the time the seed is ripe), usually 

 enlarged, and more or less altered in shape and consistence. It encloses or 

 covers the seed or seeds till the period of maturity, when it either opens for 

 the seed to escape, or falls to the ground with the seed. When stalked, its 

 stalk has been termed a carpophore. 



147. Fruits are, in elementary works, said to be simple when the result 

 of a single flower, compound when they proceed from several flowers closely 

 packed or combined in a head. But as a fruit resulting from a single 

 flower, with several distinct carpels, is compound in the sense in which that 

 term is applied to the ovary, the terms single and aggregate, proposed for 

 the fruit resulting from one or several flowers, may be more appropriately 

 adopted. In descriptive Botany a fruit is always supposed to result from a 

 single flower unless the contrary be stated. It may, like the pistil, be syn- 

 carpous or apocarpous (125) ; and as in many cases carpels united in the 

 flower may become separate as they ripen, an apocarpous fruit may result 

 from a syncarpous pistil. 



148. The involucre or bracts often persist and form part of aggregate 

 fruits, but very seldom so in single ones. 



149. The receptacle becomes occasionally enlarged and succulent; if 

 when ripe it falls off with the fruit, it is considered as forming part of it. 



150. The adherent part of the calyx of epigynous flowers always persists 

 and forms part of the fruit ; the free part of the calyx of epigynous flowers 

 or the calyx of perigynous flowers, either persists entirely at the top of or 

 round the fruit, or the lobes alone fall off, or the lobes fall off with what- 

 ever part of the calyx is above the insertion of the petals, or the whole of 

 what is free from the ovary falls off, including the disk bearing the petals. 

 The calyx of hypcgynous flowers usually falls off entirely or persists en- 

 tirely. In general a calyx is called deciduous if any part falls off. When 

 it persists it is either enlarged round or under the fruit, or it withers and 

 dries up. 



151. The corolla usually falls off entirely ; when it persists, it is usually 

 withered and dry (marcescent), or very seldom enlarges round the fruit. 



152. The stamens either fall off, or more or less of their filament* 

 persists, usually withered and dry. 



153. The style sometimes falls off or dries up and disappears; some- 

 times persists, forming a point to the fruit, or becomes enlarged into a wing 

 or other appendage to the fruit. 



1 54. The Pericarp is the portion of the fruit formed of the ovary, and 

 whatever adheres to it exclusive of and outside of the seed or seeds, exclu- 

 sive also of the persistent receptacle, or of whatever portion of the calyx 

 persists round the ovary without adhering to it. 



155. Fruits have often external appendages called wings (alse), beaks, 

 crests, awns, etc., according to their appearance. They are either formea 

 by persistent parts of the flower more or less altered, or grow out of tha 



M 



