22 



ORDER XVIIl PlTTOSPOREiF. 



No plants of this Order have any practical value, except that many 

 of them are cultivated for ornament. Our only species is a tree known 

 to the natives as um-Fusamvu, and, like many other species of the 

 genus, has its seeds immersed in a viscid pulp or resin. 



Trees or shrubs, seeds lying in viscid resin. Pittospgrum. 



(Ex. Umfusamvlt.) 

 1 Pittosporum, Banks. 

 viridiflorum, Sims. A-F. 



ORDER XX. POLYGALEiE. 



Many plants of this Order contain a bitter principle, and some 

 have been used medicinally. Other species, in addition to our Polygahi 

 s^rppntnrio, have been used as antidote for bites of snakes, but fheir 

 efficacy is very doubtful. Several species are in cultivation as 

 ornamental plants. Number of species about 400. 

 Sepals very uneqnal, the two lateral ones wing-like Polygata. 



Sepals subequal feiLU.TiA. 



List of Species. 



1 Folygala, Linn. ophiura, Chad. ? 



affinis, D.O. oppositifolia, Linn. A. 



capillaris, E.M. A. persicariaefolia, D.C. A-B. 



chloroptera, Chod. A. producta, N.E.H. C. 



confusa, Macowan. A-'^. rigens, D.C. B. 



durbanensis, Olwl. A. serpentaria, E. Sf Z. B-C. 



Galpini, Hoolc. tenuifolia, Livh. A-D. 



Gerrardi, Glwd. ukambica, Chad. ? 



hottentotta, Presl. A-E. virgata. Thb. A-E. 

 Ivsimachpefolia, Chad. 



myrtifolia, rAnn. A. '^ Muraltia, Necker. 



natalensis, Ghod. ecornuta, N.E.B. E. 



neglecta, Macowan. lancifolia, Harv. BC. 



Ohlendorfiana, F. &- Z. A-D. pilosa, B.C. B. 



n. sp. {Evans 666). . ? 



ORDER XXII. OARYOPHYLLE.T^.. 



An order containing but few useful plants, though some species 

 of Dianthus, known popularly as " Carnation, Sweet William, Indian 

 Pink," &C;, are favourite garden plants. Number of species more 

 than 800. 



(Ex. Chickweed ; Pink.) 



Calyx tubular, 4-5 toothed. Petals clawed. 1 



Sepals 4-5, separate to base or nearly so. Petals iiot clawed 2 



1 Calyx bracteate at base. Dianthus. 



1 Calyx nude at base. Silene. 



2 Stipules none. Petals 2-fid. Styles 4-5. Cerastium. 



2 Stipules none. Petals 2-fid. Styles 3, Stellaiiia, 



