Heller : plants of the Hawaiian islands. 837 



Oxalis eorniculata L. Sp. PI. 435. 1753. 



A common plant in the streets and gardens of Honolulu, but 

 it has also found its way into the lower forest, and grows lux- 

 uriantly in the rich soil. A prostrate, spreading plant, with 

 wirey branches. 



April 19 (2159); original locality, "in Italia, Sicilia." 



ZYGOPHYLLACEAE. 



TRIBULUS L. Sp. PI. 387. 1753. . 



Tribulus cistoides L. Sp. PI. Ed. 2, 703. 1763. 



Abundant in sand at Diamond Head, and at other places near 

 the beach. It is found on all of the islands of the group. A 

 handsome species, but not pleasant to handle, on account of 

 the sharp spines on the fruit. 



March 28 (2018); original locality, "in America calidiore." 



RUTACEAE 



PELEA A Gray, Bot. CJ. S. Expl. Exped. 15:339. 1854. 

 In the Index Kewensis, Pelea is united with Melicope, and if 

 rightly so, the latter name has precedence, and must be used. 

 But in Hillebrand's discussion, which is probably correct, he 

 points out enough differences to keep the Hawaiian plants dis- 

 tinct. He says: "From Melicope, on the other hand, they are 

 distinguished, aside from the valvate aestivation of the petals, 

 by the terminal style, not basal or lateral as in that genus, and 

 by the stigma, which is capitate in Melicope, but divided into 

 four filiform branches in Pelea." 



Pelea anisata Mann, Proc. Bost. Soc. Nat. Hist. 10:314. 1866. 

 The leaves of the "Mokehana," as this species is called by 

 the natives, are used for making a mixture for coughs and 

 colds. On the plateau above Waimea, Kauai, a low, shrubby 

 form was collected, which answers very well to the original 

 description: "In general appearance resembling P. oblongi- 

 folia, but perfectly distinguished by its overpowering anisate 

 odor when the leaves are bruised or the bark peeled off. * * * 

 Leaves elongated oval or olong, obtuse, somewhat attenuate at 

 the base, two to seven inches long, one to two inches wide." 

 At this place the two species were growing close together, and 

 resembled each other very closely. In a canon at the head of 



