S36 TETRADYNAMIA. 



instances will suffice as clear examples of natural gen^ 

 era, distinguished by an essential technical character, 

 in a most natural order. 

 2. Angiospennia. Seeds in a capsule, and generally 

 very numerous. (138) — The plants of this order have 

 the greatest possible affinity with some families in 

 Pentandria Monogynia. (139) Some species even 

 vary from one class to the other, as Bignonia radicanSf 

 Curt. Mag. t. 485, and Antirrhinum JLinaria, Engl. 

 Bot. t. 658, 260, in which the irregular corolla be- 

 comes regular, and the 4 unequal stamens are chang- 

 ed to 5 equal ones ; nor does this depend, as has 

 been asserted, on the action of any extraneous pollen 

 upon the stigmas of the parent plant, neither are the 

 seeds always abortive. No method of arrangement, 

 natural or artificial, could provide against such anom- 

 alies as these, and therefore imperfections must be ex> 

 pected in every system. 



Class 15. Tetradynamia. Stamens 4 long and 2 

 short. Orders 2, perfectly natural. Flowers cruci- 

 form. 



1. SHiculosa. Fruit a roundish pod, or pouch. In 

 some genera it is entire, as Draba, Engl. Bot. t. 586, 

 and the Honesty or Satin flower Lunaria : in others 



(138) [The Personatee or masked flowers are chiefly found here, 

 as Antirrhinum, Chelone, Mimulus, &c.] 



(139) [Some genera of this order have the rudiment of a fifth 

 stamen ; as Chelone, Pentstemon^ 8cc. while many plants of the 

 fifth class have an irregular monopetalous corolla, resembling 

 those of this order.] 



