ZYGOPHYLLACE^!. 



325 



14. OXALIS PURPUREA, Jacq. 



Hab. Cape of Good Hope, in the immediate vicinity of Cape Town. 



15. OXALIS FILICAULIS, Jacq. 



Hab. Cape of Good Hope ; with the preceding. 



16. Oxalis versicolor, Linn. 

 Hab. With the three preceding species. 



Ord. ztgophtllace^. 



1. TRIBULUS, Toum. 

 1. Tribulus cistoides, Linn. 



Tribulus cistoides, Linn. Spec. PL p. 387; Jacq. Hort. "Schcelib. t. 103; Gray, Gen. 

 Am. Bor. 111. 2, p. 116, t. 145. 



Hab. St. Jago, Cape de Verdes. Sandwich Islands, near Honolulu, 

 Oahu. Doubtless introduced from South America. 



Endlicher, in his Synopsis Fl. Ins. Austr. (in the Annals of the 

 Vienna Museum), has inadvertently referred this species to Scopoli's 

 genus Kallstroemia, restored by him : but it is a true Tribulus having 

 a pentacoccous fruit, as is stated by DeCandolle, on the authority of 

 Kunth. The spines of the fruit vary greatly in size. 



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