14 VEGETABLE ORGANOGRAPHY. 



Corymb is given, and when it is wished to distinguish it 

 from the preceding, we may, from analogy with the 

 racemes, of which they are modifications, designate 

 the first by the name of a Single Corymb, and the 

 second by that of Compound Corymb. But as several 

 very distinct inflorescences have been confounded under 

 the name of Corymb, I have reserved this name for a 

 particular class, which we will shortly examine, and I 

 shall designate by the name of Simple Corymbiform 

 Raceme, simple racemes, with the flowers placed on 

 the same level, and by that of Compound Corymbiform 

 Raceme, those which being compound present nearly 

 the same disposition. The reasons for this manner of 

 speaking will become evident when we treat of true 

 corymbs. 



3d. The inflorescence in appearance the most distant 

 from the raceme, is the Umbel (ambella). This name 

 is given to an assemblage of one-flowered pedicels, 

 which all spring exactly from the summit of a branch, or 

 common peduncle. We distinguish the Simple Umbel, 

 as, for example, in the Cowslip or cultivated Cherry ; 

 and the Compound Umbel, which exists in almost all 

 the UmbelliferEe — it differs from the simple umbel in 

 its common peduncles being themselves disposed in 

 umbels ; we here distinguish consequently the General 

 or Universal Umbel, which is formed by the peduncles, 

 and the Partial Umbel, or Umbellcle, which is 

 formed by the pedicels. The umbel really differs less 

 from the raceme than it seems at first siffht. If we 

 compare, in fact, the different racemes together, we 

 shall find some, it is true, which have the axis very 

 long, as in the Ornithogalum of the Pyrenees ; but some 

 are also found with the axis much shorter, as in the 

 Ornithogalum said to be umbellate, which has its 

 flowers really in a raceme; lastly, we see racemes, the 



