NOTE ON THE GENUS PROSORUS.' 271 



longunij testa membrauacea, hilo lateral!, seminis longitudinem fere 



eequaiite. Emhryo in axi albuminis carnosi ; cotyledonibus oblongis, 



7-nerviis ; radicula cylindrica versus fructus apicem spectaute. 



Arbor ingens^ Zeylanica ; ramulis teretihus ; foliis IcsvibuSy Imiceolatis^ 



acuminatum obliquis^ petiolatis^ penniveniiSy stipulatis^ subtus sparsim 



glandulosO'punciatis ; stipulis minutis ; floribus axillarihiis^ fascicu- 

 latis^ minutis, 



1. Palenga Zeylanka, Thw. (Tab. VII. a)— C.P. No. 3349 in Her- 



bario Peradeniensi. 



foliis 



1 



floribu 



4 lin. latis, fusco-tomentosis 



/^ 



The leaf-buds of this species are coated with a gummy secretion ; 

 and tbe young expanded leaves, wben immersed in boiling water, be- 

 come covered with a thin, waxy exudation. 



This species has hitherto only been met with in the Ambagamowa 

 District of the Central Province, and there sparingly, at an elevation of 

 about 2000 feet. The native name of the tree is ''Falenga-gass.^^ 



The nearest affinity of this genus is evidently with Putranjiva^ which 

 it resembles very much in its foliage, as well as in general appearance. 

 In the simple structure of its male flowers it approaches the Scepacece^ 

 which group it also resembles, as well as the Antidesmece^ and Hemicy- 

 clia and Bphragidia^ amongst the Buxece, in the arrangement of its 

 placenta and ovules, a pecuUai'ity which seems to bring all the above- 

 named plants within the limits of one Natural Order. 



Plate VII. C. Pig. 1, Female flowering branch of Palenga Zeylanica^ 

 Thw. 2. Young female flower. 3. Vertical section of ovary. 4. Trans- 

 verse section of ovary. 5. Kipe fruit. 6. Longitudinal section of same. 

 7. Transverse section of same. 8. Embryo. 9. Male flowers. 10. 

 Male flowers, with sepals removed. 11. Transverse section of male 

 flower: — all but fig. 1 magnified. 



Note on the Genus Prosokus, Dalzell; by G. H. K. Thwaites, Esq. 

 I find that In my figure and description of "Frosorus Indica, Dkl./* 



in the sixth volume of this work/ p. 298, tab. lOO., there are mixed 



