APOCYNACEAE. 



323 



CAEISSA. Amatungulu. 

 (Family Apocynaceae). 



Shrubs with milky sap, usually 

 with many forking axillary terete 

 spines: evergreen. Twigs terete: 

 pith moderate, spongy. Buds soli- 

 tary, sessile, small, ovoid, "with 1 

 or 2 pairs of exposed scales, or, 

 when spines are present, these are 

 above the axillary buds. Leaf- 

 scars opposite, crescent-shaped, 

 elevated: bundle-trace 1: stipule- 

 scars lacking. Leaves simple, en- 

 tire. 



Carissa Arduina, as C. bispinosa 

 is usually called, is familiar in 

 greenhouses and is grown out-of- 

 doors in parts of the South for its 

 large fragrant white flowers. The 

 branches of its regularly forking 

 spines are produced from the 

 axils of small leaf-scales corres- 

 ponding in arrangement to the 



opposite foliage leaves, the end-bud being abortive. 



Glabrous: branches green, glossy: leaves deltoid-ovate. 



C. bispinosa. 



