Ch. XIX.] CLASSIFICATION. 118 
488. If you examine with a microscope one of the florets of 
the disk, you will perceive it to be tubular, containing one pis- 
til, surrounded by five stamens, the styles of which are separa- 
rate, but the five anthers grow together, forming a tube around 
the pistil. It is this union of anthers which gives to compound 
flowers a place in the class Syngenesia, which name signifies 
anthers growing together. ’ 
489. The florets of the ray are called neutral, having neither 
stamens nor pistils; the circumstances of its having neutral 
florets in the ray, places the Sunflower in the order F’rustranea 
of the 17th class. 
490. Although the term compound is applied to the flowers 
of the class Syngenesia, the real circumstance on which the 
class is founded is not the compound character of the flower, 
but the union of anthers. 
491. A Clover blossom, in one sense, may be said to be com- 
pound. as it is a collection of many little flowers compounded 
or united into one; but each little floret of the clover has its 
own calyx; there is no general calyx inclosing the whole, as in 
most of the Syngenesious plants, but the florets are arranged in 
such a manner as to form a head; the anthers are separate, the 
filaments are connected at their sides, and this latter circum- 
stance, together with the papilionaceous form of the corolla, 
places the clover in the class Diadelphia. 
492. Most ef the Syngenesious flowers are composed of two 
sorts of florets; they are either tubular, or strap shaped, (ligu- 
late,) appearing flat like a strap, both kinds are toothed at the 
edge; the ligulate are sometimes called Semiflorets, or half 
flowers. 
488. What is the appearance of the florets of the disk when exam- 
ined by a microscope ? 
489. Why are florets of the ray cxJled neutral? 
490. Is the class Syngenesia founded on the compound character of 
flowers 2 
491. Why does not the clover belong to this class 
nae ar two sorts of florets are generally found in Syngenesiou; 
tlants ¢ 
