EXPLANATION OF THE ILLUSTRATION 
Prare XVII, Lurnropsts Scuutresi Cuatrecasas. 
1, flowering branchlet, one half natural size. 2, 
flower, one half natural size. 3, stamens, three 
times natural size. 4, anther showing apical pores, 
fifteen times natural size. 
Drawn by Dorotuy H. Marsu 
