o. HEILBORN, CYTOLOGICAL STUDIES ON CARICA. 7 



)tlier, unknown species. We shall return to this subject 

 ater on. 



As indicated above, I have never seen any male indivi- 

 duals or male flowers of C. chrysopetala and C. pentagona. 

 Several persons whom I consulted during my journey told 

 ne they had made the same experience and Jameson (1865) 

 nentions, though he does not describe, two cultivated spe- 

 ;ies of Carica, of which he had never seen any male indivi- 

 iuals. The male plants of C. chrysopetala and C. pentagona 

 ire obviously extremely rare if they do exist at all. Both 

 species are propagated in the gardens in Ecuador by means 

 )f cuttings. 



It appears from the preceding account that the word 

 »chamburo» is used in a different sense in different parts of 

 Ecuador. Indeed, Spruce (1869) tells us that, throughout 

 ,he Andes, all the larger species of Carica are called »cham- 

 )uro» and the smaller ones »col del monte» (»wood-cabbage»), 

 ^n this connection an error of Wolf (1892, p. 443) should 

 )e corrected. According to this writer the cultivated »cham- 

 buro» of the Ecuadorian mountains is C. digitata. This is a 

 jeculiar mistake. C. digitata is merely a synonym for Jaca- 

 atia digitata (Poeppig) Solms, which is a spiny tree from 

 he upper Amazon basin. This species too is called »cham- 

 3uro» by the natives, but obviousl}^ it has nothing to do with 

 ;he Ecuadorian garden-Car/cas. 



Unfortunately I did not know during my journey how 

 ^ery scanty our knowledge is of these Andean fruit-trees. 

 Dtherwise I should have paid them more attention and 

 "ormed more complete collections. Species and races, un- 

 known to science, may probably still be found in the gar- 

 iens of the natives. 



C. Papaya L. 



The common papaya is cultivated only in the tropical 

 owlands and on the lowest slopes of the mountains. At 

 fenguel, south of Guayaquil, a race called »papaya del 

 nico» (»monkey's papaya») was found growing at the skirts 

 )f the woods and was said to be wild. It differed in no 

 jssential feature, however, from the typical papaya and had, 

 10 doubt, escaped from the gardens. 



