240 FLORA'S LEXICON. 



Tetradynaraia. 



Order Siloculosa (Pouch, or broad Pod) Horse-radish. 



Siliquosa . (long Pod) Wall-flower. 



It is necessary to remark, that the flowers of this class have 

 uniformly 4 petals ; an attention to this circumstance will proba- 

 bly save the learner some trouble, as the difference in the length 

 of the stamens is not always very obvious, and especially as the 

 plants of the Hexandria class have none of them 4 petals. 

 Monadelphia. 



Order Triandria . (3 stamens) Juniper Tree. 



Decandria . (10 stamens) Wood Cranesbill. 

 Polyandria (many stamens) Common Mallow. 

 In this class the filaments are all together at the bottom, but 

 separate at the top. The orders in this and the two following 

 are determined by the number of the stamens. 



Diadelphia. 



Order Hexandria (6 stamens) Common Fumitory. 

 Octandria. (8 stamens) Common Milkwort. 

 Decandria (10 stamens) Common Vetch. 

 This class comprehends the butterfly-shaped flowers. From 

 the name of this class, the joung Botanist will be induced to 

 imagine, that the filaments are always formed into two sets, but 

 this is by no means the case, as in many instances they are 

 united into one set. The butterfly-shape of the blossom will 

 therefore (as in the garden pea) be a more certain guide. 



Polyadelphia. 



Order Polyandria. Common St. John's Wort. 

 Syngenesia. 



Order Polygamia ^Equalis. Florets furnished with stamens 



and pistils. Common Sowthistle. 

 Polygamia Superflua. Florets in the centre, furnished 

 with stamens and pistils, those in the circumference 

 with only pistils. Groundsel. 



Polygamia Frustanea. Florets in the centre, furnished 

 with stamens and pistils, those in the circumference 

 without any. Corn-flower. 



