320 PAPAYALES. [Diclinous Exogens. 



Alliance XXV. PAPAYALES.— Tri: Papayal Alliance. 



Diagnosis. — Diclinous Exogem with dicMamydeous flowers, superior consolidated carpels, 

 parietal placenfce, cmd embryo surrowided hy abundant albumen. 



If the plants referred to this Alliance had no albumen and an inferior ovary, they 

 would be Cucurbitals ; if their flowers were bisexual and coronetted they would do for 

 Passionworts ; if their fruit were simple and their 0%'ules orthotropal, or at least with 

 the foramen uppermost, they would fall into the Order of Nettleworts. They seem evi- 

 dently to join the Violal Alhance, the whole of which, if the flowers were diclinous, 

 might have been brought into the closest contact with Papayals, as will be sufiiciently 

 evident if Pangiads are compared with Bixads. 



Natural Orders of Papayals. 



Corolla monopetalous ; ^ without scales 108, Papayace^. 



Corolla polypetalous ; '^ with scales in the throat . . . . 109. Pangiace^e. 



