Fig. 737: Lobelia puberula: a, spike, x Vs, b. basal and central part of stem, x 1/2; 

 c, flower, X 2V2 d, corolla open, x 21/2; e, stamen column, front view, x 21/2; f, stamen 

 column, side view, x 2\-j.- (V. F.). 



