ARNOTT ON SOUTH AFRICAN PLANTS, 151 



aestivatione imbricata. Petala 5, sepalis minora, rotundata, 

 longe lanato-fimbriata, basi intus squama libera petaloidea 

 fimbriata instructa. Discus annularis, compjetus. Stamina 

 sub 20, intra discum inserta. Filamenta antheris subbrevi- 

 ora, dense albo-pilosa. AnthercR erectse, oblongEe, subapicu- 

 latae, biloculares, loculis paralieiis- Ovarii vestigia nulla. 



— Folia impari-pinnata ; foUola elliptico-oblonga, subcequalia. 

 Panicula terminalis, densa. 



From tbis tbere can be no doubt of tlie plant belonging 



to Sapindacea', and probably of being a second species of 



Prostea, Camb., with which it agrees in many particulars ; 



this however I cannot determine without the female flowers 



and fruit. 



5. R. pauciflora, Th., and Rk. alata, Th. ? These two 

 appear to be the same species, and constitute the Hippo- 

 bromus alatus, E. and Z., a genus which is referred by Eck- 

 Ion and Zeyher, and Harvey, to Burseracece, but decidedly 

 belongs to Sapindacece, where indeed it has been placed, but 

 among the doubtful genera, by Endlicher {Gen. p. 1074). 

 The petals are destitute of a scale or appendage, and are 

 inserted under the disk. Ecklon and Zeyher also consider 

 their plant to be R. alata, Th., but they refer R. pauciflora^ 

 Th,, to a very different one, the Amyris incequalis, Ant. 

 Spr. ; in this last the petiole is not margined, while in R. 

 pauciflora, it is said to be so. I rather then, incline to 

 agree with E. Meyer, and consequently in thinking that the 

 above two species of Thunberg are mere varieties of Hip- 

 pohromus alatus. 



6. R. obliqua, Thunb. This specimen is covered with 

 prickles, and as that character could not have escaped Thun- 

 berg, I can scarcely agree in supposing it to be his plant. 

 The calyx is 4-partite. The capsule solitary, sessile, two- 

 valved, and from one to two-seeded ; its structure and that 

 of the seeds is precisely as in Zanthoxylon, to the section 

 ^a^am of which genus I presume it belongs. The petiole 

 Js terete, and unarmed. It may he Fagara capensis, Thunb., 

 but De Candolle refers that species to Elaphrium, on account 



