422 



swingle: a salt-tolerant citrous plant 



Citrus angulata. Under the name Paramignya angulata Kurz, 

 Valeton in 1912* published a Latin description of this plant, 

 accompanied by an excellent figure, giving fruits and flowers. 

 Here, as a result of a suggestion made by the writer to Dr. 



Valeton in 1909, attention is first 

 called to the identity of Sclerostylis 

 spinosa and Citrus angulata. At the 

 request of the writer a native collec- 

 tor was sent by Dr. Valeton to Noessa 

 Kambangan on the south side of Java 

 in 1910 and he succeeded in securing 

 specimens of the kigerukkan and later 

 on a considerable quantity of viable 

 seeds. 



A study of these specimens and of 

 living plants growing in the green- 

 houses of the U. S. Department of 

 Agriculture at Washington, D. C, 

 has convinced the writer that this 

 plant cannot be referred to Para- 

 mignya but constitutes a distinct 

 genus (figs, 1 and 2). Since Sclero- 

 stylis must be considered a synonym 

 of Glycosmis, as shown above, the 

 oldest available name for this plant 

 is Roemer's Merope. This genus dif- 

 fers rather widely from any other 

 plant in the subfamily Citratae, but 

 is doubtless most nearly related to Paramignya and Lavanga, 

 which also have fruits lacking in pulp vesicles. It differs from 

 Paramignya in the character of the seeds, which are very long 

 and flattened, in the triquetrous fruit (see fig. 2), the paired spines, 

 the simple, short petiole (not long and twisted), and the thick, 

 leathery leaves. It differs from Lavanga in the simple (not 

 trifoliate) leaves, the simple, short petiole, and the straight 

 (not curved) spines. 



Fig. 1. Merope 

 Flowering branch, 

 half. 



angulata. 

 Scale one- 



« Icones Bogorienses, 4: 159-161. pi. S48. 1912. 



