474 PART IV. CLASSIFICATION. 



many other Leguminosse ; in some cases (Astragalus) a spuri- 

 ous dissepiment occurs : it is superior. 



The lomentum is a modification of the legume ; it is constric- 

 ted between the seeds, and it is either indehiscent or it 

 breaks across, when ripe, at the constricted parts. It occurs 

 in the Hedysarese. 

 (c) The siliqua consists of two coherent carpels. The two carpels 



FIG. 288. Dry dehiscent fruits. A The pod (legume) of the Pea : r the dorsal suture ; 6 

 the ventral ; c calyx; * seeds. B Septicidal capsule of Colchicum autumnale : ///the three 

 separating carpels. C Siliqua of Brassica ; fc the valves ; w the dissepiment and placentae 

 (replum) ; s seeds ; g style ; n stigma. D Capsule, opening by pores, of Papaver somniferum, 

 the Poppy ; n stigma; j the pores which open by the removal of the valves (<i). i'P.yxidium 

 of Hyoscyamus; d the lid; ic the dissepiment; g seeds. 



when ripe separate from the base upwards into two valves, 

 leaving their margins (with the parietal placentae and the 

 spurious dissepiment) attached, as a frame or replum, to the 

 apex of the pedicel ; e.g. Eape, Mustard, and most of the 

 Cruciferse (Fig. 288 C) : it is superior. 



When the siliqua is short and broad, it is termed a sillcitla, 

 as in Thlaspi and Capsella. In some cases, as in the .Radish, 

 the siliqua is jointed and indehiscent, breaking transversely 



