292 



THE FLOWER. 



anther, the latter is termed innate, and rests firmly upon the summit 



of the filament, as in Fig. 370. 2d. 

 When the lobes of the anther adhere 

 for their whole length to a prolonga- 

 tion of the filament, or to a broad con- 

 nective (whichever it be called), so as 

 to appear lateral, it is said to be ad- 

 nate ; as in the Magnolia (Ord. Mag- 

 noliacese). Here the anther must be 

 either extrorse or introrse. It is in- 

 trorse, or turned inwards, when it oc- 

 cupies the inner side of the connec- 

 tive, and faces the pistils, as in Mag- 

 nolia and the Water-Lily (Fig. 266) ; but when the anther looks 

 away from the pistils and towards the petals or sepals, it is said to 

 be extrorse, or turned outwards, as in the Iris, in Lirioclendron 

 (Fig. 371), and in Asarum (Fig. 373). 3d. When the anther is 

 fixed by a point to the apex of the filament, on which it lightly 

 swings, it is said to be versatile ; as in all Grasses, in the Lily, and 

 in the Evening Primrose (Fig. 372), &c. In this case, as in the 

 preceding, the anther is said to be introrse, or incumbent, when it 

 is turned towards the pistil, which is the most common form ; and 

 extrorse, when it faces outwards. 



526. The connective is frequently inconspicuous or almost want- 

 ing, so that the lobes of the anther are directly in contact 



on the apex of the filament; as in Euphorbia (Fig. 346). 

 It is often produced beyond them into an appendage, as in 

 the Magnolia and Liriodendron (Fig. 371), the Papaw (Ord. 

 Anonaceae, where it forms a rounded top), and Asarum 

 (Fig. 373). Appendages or processes from the back of the 

 connective are seen in the stamens of the Violet, and of 

 many Ericaceous plants (see Ord. Ericaceae). 



527. Each of the two cells or lobes of the anther is marked 

 with a lateral line or furrow, running from top to bottom ; this is 

 the suture, or line of dehiscence, by which the anther opens at 

 maturity, and allows the pollen to fall out (Fig. 369). This line, 



FIG. 370. Stamen of Isopyrum biternatum, with an innate anther. 371. Stamen of Lirio- 

 dendron, or Tulip-tree, with an adnate extrorse anther. 372. Stamen of (Enothera glauca, with 

 the anther fixed by its middle and versatile. 



FIG. 373. Stamen of Asarum Canadense, with an adnate anther. 



