Fig. 98. — Di'sa unifio'ra. I. Two flowers and one bud. II. Diagram of flower. la specimens 

 with more than one flower the lip (?) is turned away from the stem {x) through a twist in the 

 ovary, 1, 2, 3, 4, undeveloped or greatly modified stamens ; x, stem of plant ; s.s., side sepals ; 

 O.S., odd sepal ; s.p., side petals ; I, odd petal (labellum) ; /.«., fertile anther. Ill, Column (side 

 view) with anther and two lateral petals: st, stigma; r, rostellum. IV". Pollen masses of an 

 Orchid. V. Transverse section of an ovary. VI. Capsule dehiscing by three valves. YII. Seed 

 (X20). 



