ORDER SUPERFLUA. 253 



stamens, with their anthers united, forming a little tube, and 

 you have an idea of a syngenesious flower. 



The orders of the class Syngenesia are distinguished by 

 different circumstances than are noticed in any other class ; 

 they are founded on the situation of the several kinds of florets. 

 We will, however, before explaining the orders, remind you of 

 the distinction made in these florets. 



1. Perfect, such as have both stamens and pistils. 



2. Barren, or staminate, having only stamens. 



3. Fertile, or pistillate, having only pistils. 



4. Neutral, destitute of either stamens or pistils. 



They are also distinguished into ligulate, having a flat strap, 

 shaped corolla, and tubular, having a tubular corolla. 



The five orders in this class, depend on the various situations 

 of these different kinds of florets. 



JEqualis. 



The First Order contains those compound flowers which 

 have all the florets perfect ; this order is divided into sections. 



1st. Containing such as have ligulate florets ; as the dande- 

 lion, lettuce, and vegetable-oyster. 



2d. Florets tubulous, with flowers in a head ; as the thistle, 

 and false saffron (Carthamus). 



3d. Florets tubulous, without rays ; as, bone-set, or thorough, 

 wort (Eupatorium). 



You will find no difficulty in procuring for analysis, either 

 dandelions or thistles ; bone-set is also abundant ; therefore, 

 for farther investigation of this order we will refer you to the 

 plants themselves, aided by the generic and specific descriptions 

 provided to assist you in analyzing plants. 



Superflua. 



The Second order presents us with such compound flowers 

 as have the florets of the disk perfect, and those of the ray 

 only pistillate, each pistil producing a perfect seed. The term 

 superflua is used, because the pistils in the ray, being unaccom. 

 panied with stamens, are said to be unnecessary or superfluous. 



This order is divided into two sections. 



1st. Flowers without rays, or the ray florets indistinct ; here 

 we find the tansey, and the life everlasting; of the latter there 

 are many species. 



The ARTEMISIA, a genus which includes the wormwood and 

 southern. wood, both exotics, has but few native species. The 

 name Artemisia is often improperly given to an ornamental 



Orders, how distinguished ? Different kinds of florets Order 

 divided into three sectionsOrder Superflua Two Sections Artemisia. 



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