EXPLANATION OF THE ILLUSTRATION 
Prare XXVIII. PrieurotTHatiis GRaciLiscapa C, 
Schweinfurth. 1, plant, natural size. 2, leaf with 
fruit, natural size. 3, flower expanded, six times 
natural size. 4, lip, ten times natural size. 
Drawn by Dorotuy H. Marsu 
