Fig. 373: Spiranthes /gracilis: 1 and 2, plant x 1; 3, flower, side view, with one 

 lateral sepal removed, x 6: 4, lip, spread out, x 6; 5. column, x 11; 6. petal, x II; 7, 

 dorsal sepal, x 11; 8, lip and column, in natural position, front view, x 11; 9, longi- 

 tudinal section through center of perianth and ovary, x 8; 10, lateral sepal, x 8; 11, pollen 

 tetrad, highly magnified; 12, pollinia, from below (at left), from above (at right), x 

 20; 13, seed, highly magnified. 



