ANDRCECIUM 



6i 



Fig. 85.— Part of a 

 stamen with the top of 

 the anther cut off. 



possesses only two pollen-sacs — e.g. Mallow and Hazel. The 

 two lobes of the anther are connected by a 

 ^,1 continuation of the filament, which is termed 

 the connective (co). The connective may be 

 a narrow, almost imper- 

 ^ ceptible, continuation of 

 the filament, so that the 

 two halves of the anther 

 are close together; or it 

 may be wider, and thus 

 cause the anther-lobes to 

 be clearly separated. Oc- 

 casionally the connective 

 is continued beyond and 

 above the rest of the anther to form a flap- 

 like process — e.g. Violet (fig. 158, 5, c), and 

 some Compositae. 



The stamens may be separated from one 

 another, or they may be united by their 

 filaments or anthers. In the Mallow (fig. 

 161) and some of the members of the Pea- 

 family, the filaments of all the stamens in a 

 flower are united for a certain distance so 

 as to form one bundle ; in some other members of the Pea- 

 family (fig. 87) nine of the ten stamens are similarly united 



(an. t) by their filaments, 

 but the tenth is separate 

 (/. a). In the Daisy- 

 family the filaments of the 

 stamens are separate, but 

 1 their anthers cohere (fig. 

 202). 



Like the sepals and 

 petals, the stamens may 

 form one whorl — «.^. Violet; 

 or several whorls (two 

 whorls in the Wallflower, Geranium, and Hyacinth; many 

 whorls in the Poppy). Or the stamens may be arranged 

 spirally on the receptacle — e.g. Buttercup. 



Usually all the stamens of a flower are similar in form and 

 size. In the Wallflower-family (fig. 88), however, the androe- 



Fig. 86. — Longi- 

 tudinal dehiscence of 

 anther, showing the 

 escaping pollen (^). 



anf 



Fig. 87. — Flower of Garden Pea, with calyx 

 and corolla removed. 



