6 2 FRUCTIFICATION. 



ward in such a way, that after they are thrown down, the wind, by 

 moving the pappus, works them into the earth. The Animated 

 Oat, being- moved by every change of moisture, affecting its twist- 

 ed awn, works its way into the earth with wonderful certainty. 



3. Animals feed on the pulpy fruits, and at the same time dis- 

 perse their seeds, voiding- them in a condition to vegetate. 



Some seeds attach themselves to animals, by means of barbs and 

 hooks, which are either affixed to the seeds themselves, as in Car- 

 rot, or to their calyx, as in Burdock, Agrimony and Itidens. 



4. The Touch-me-not, Impatiens, is a common example of an 

 lastic capsule, 



VII. Receptacle. 



RECEPTACLE, (receptaculum.) PI. 12, fig. 2, a. 

 Is the common base or point where all the other parts 

 of the fructification unite. 



It is termed 



1. PROPER, when it belongs to a simple flower. 



2. COMMON, when it belongs to aggregate flowers, 

 which sec below. 



Observation. It is not a very definite part in simple flowers, 

 there being no particular line of separation between it and the 

 other parts ; in the compound flowers, as the Dandelion, Sun- 

 flower, cc. it const itutes a remarkable and important part. 



Simple and Aggregate Flowers. 



1. A SIMPLE FLOWER, (flos simplex) is a flower 

 which has a single fructification, complete in all its 

 parts, none of which are common to many flowers, as 

 the Rose and Lily. 



Observation. A flower furnished with both calyx and corolla, 

 is termed a COMPLETE flower, (fos completus ,) when the latter is 

 wanting, IN COMPLETE, (incompletus ,) and when the corolla is pres- 

 ent without a calyx, NAKEd, (nudus.} 



2. AGGREGATE FLOWER, (flos aggregatus) is applied 

 by Linnseus to such flowers as are made up of a num- 

 ber of smaller flowers, collected together by means of 

 a part, either a calyx or receptacle, common to them all. 



Observation. Each of the flowers, which goes to constitute an ag- 

 gregate flower, is called a FLORET, (ftosciiliifi) little flower ; and, 

 from the above description, it is evident, does not constitute a 

 complete flower of itself, as one or two of the essential parts of a 

 flower are common to the whole aggregate. It happens, however, 

 sometimes, that the floret will be furnished with a part analogous 



