204 Plants and their Ways in South Africa 



of the flower. The anther is in front, as the ovary is not 

 twisted, and the glands of the polHnia he in the notched 

 rostellum. In S. rhyncanthum the two polHnia are joined to 

 one gland. 



Leaves two or one lying flat on the ground, or more than two erect. 

 Flowers in dense spikes, white, brilliant yellow, orange, or a beautiful rose 

 colour or dull brown. Different species may be found in flower from July 

 till December, A widely distributed genus. 



Fk;. 204. — Disa race/itosn. 



Disa. — Sepals nearly equal and separate; the odd one, 

 which is usually at the back, and forms the conspicuous part 

 of the flower, is helmet-shaped, i -spurred or saccate. The 

 lip in most species is small. In the blue Disa it is quite showy. 

 Scapes leafy, or the leaves reduced to bracts. Roots tuberous. 

 D. uniflora (usually caWed graudi^or a) is the finest one, although 

 others are quite beautiful if less showy. 



