82 



BOTANY. 



men is looked upon by botanists as a sort of leaf, the fila- 

 ment answering to the petiole, and the anther to the blade 

 The connective corresponds to the midrib of a leaf, and 

 the line of dehiscence to its margin, each lobe being half 

 of a leaf-blade, and the valves of an anther corresponding 

 to the upper and under sides of a leaf. 



Examine the anthers of as many different flowers as 

 possible, and try to find the cells, connective, line of dehis- 

 cence, valves. Do not be disappointed or discouraged if, 

 in many cases, you fail to distinguish some of the parts. 



Gather flowers with large, perfect stamens, which have 

 not shed their pollen, and compare them with Fig. 219. 



Look at the magnified stamens on the charts, and find, 

 if you can, the parts of the anther named in this exercise. 



EXERCISE XXXI. 

 Number and Shape of Anther-Lobes. 

 An anther-lobe is said to be EMARGINATE when the 

 summit, or base, of the anther-cell extends upward or 

 downward, a little beyond the connective (Fig. 226). 



NUMBER OF ANTHER-LOBES. 



FIG. 220. 

 One-celled Anther. 



FIG. 221. 

 Two-celled Anther. 



FIG. 222. 

 Four-celled Anther. 



Label each flower of your collection with the number 

 and shape of the anther-cells of its stamens. 



