342 MR. J. MIEES ON SOME SOUTII-AMEKICAN GEKEEA. 



supported upoii a small acutely 5-lobed calyx, each sepal being 

 3 lines long, and the slender pedicel of the same length ; the 

 fruit is If inch in diameter, smooth, yellow, variegated by red 

 patches, with a soft thick pericarp, white and spongy within, is 2- 

 celled, having a simple dissepiment, upon whose faces several rows 

 of seeds are separately suspended by a short funicle ; they are 

 oblong-oval, compressed, with a finely rugous surface (chagrines\ 

 the testa very hard and osseous, each enclosed in a gelatinous 

 sac filled with a transparent fluid of a pale yellow colour, each 

 seed containing an embryo of two cotyledons : the seeds are 7| 

 lines long, 4 lines broad. 



The most prominent feature in this structure is the thick peri- 

 carp, coloured outside, consisting within of a white spongy sub- 

 stance like the rind of an orange ; but the m unilocular formation 

 of that fruit, and the axile attachment of the seeds, repel any near 

 approach of Managa to Citrus i hut other genera of the same 

 family favour a nearer affinity. For instance, Bergera Eonigii, 

 Wight 1 , shows a bilocular ovary with several suspended ovules 

 attached to the dissepiment, and a globular fruit 2 , 2-celled, with 

 several suspended seeds in each cell. In the same species Cole- 

 brook describes 3 its fruit as 2-celled, sometimes unilocular by 

 abortion. 



In Claitssena Willdenovii Wight 4 describes the fruit as 2- 

 celled, with two suspended seeds in each cell. In Murraya exo- 

 tica Wight figures 5 a 2-celled ovary and a bilocular fruit. Finally, 

 De Candolle describes Glgcosmis 6 as having a fleshy fruit, 2-celled, 

 or, by abortion, unilocular. 



These instances are sufficient to demonstrate that Managa has 

 many claims to vindicate its position among the Aurantiacea ; 

 indeed it would be difficult to assign it any other place. 



Racabia. 



This genus, established by Aublet on his Bacaria sylvestns , 

 was placed by the elder DeCandolle in Sapindacece 8 , and among 

 genera of uncertain position by Messrs. Bentham and Hooker. 



1 Icones, i. tab. 13. in fig. 3. 2 Idem in fig. 6. 



3 Linn. Trans, xr. p. 368, tab. 5. fig. 4, letters a and b. 



* Icones, i. tab. 14. fig. 5. 5 Icones, i. tab. 96, figs. 5 and 8. 



6 Prodr. i. p. 538. * PL Guian. ii. Suppl. p. 24, tab. 382. 



* Prodr. i. p. 618. • Gen. Plant, i. p. 392. 







