CHAPTER III. 



FRUITS OF LEGUMINOS.E, AND ROSACEA. 



Fruits of Leguminosae Legume Dehiscent and Indehisccnt Fruits 

 Lonientum Twisted Fruits Fleshy Fruits Longitudinal 

 Septa Entada Achene Samara Drupe Subterranean 

 Fruits. Fruits of Rosacese Follicle Capsule Legume 

 Achene Drupe False Fruits Aeterio of Achenes or Drupes 

 Inferior Fruits. 



The student can obtain an excellent insight into the 

 relations of monocarpellary fruits by comparing the play 

 of forms observed in a large family such as the Legumi- 

 nosae, 



The type is the many-seeded, normal legume (Fig. 5) 

 which gives the name to the family. It opens as two flat 

 or curled membranous, or rarely (e.g. Lupin) more or less 

 fleshy, valves, and is inflated in the tribe Colutinse (Fig. 25) 

 and some species of Astragalus ; but in Batesia only one 

 suture opens and the fruit becomes a Follicle, while in 

 some Colutina? the two valves only gape above. One 

 of the commonest departures is that the legume does 

 not dehisce by the sutures, but is either simply indehis- 

 cent (Arachis, Dalbergise and many Caesalpiniaceas) ; or, 

 more often becomes septate by the formation of cross- 

 partitions between the seeds, and is then indehiscent 

 (Cassia (Fig. 26), Sophora, Cathartocarpus, &c.) or breaks 



