GLOSSARY OF 



THE STAMENS OR ANDRCECIUM. 



Parts. 



Filament : tlie lower stalk-like part ; it supports the anther 

 (Fig. 140). Stamens are 



(a) Exserted, if the filaments are so long tliat the 

 anthers protrude bej"ond the perianth (Fig. 141). 



(b) Included, if the filaments are not long enough to 

 raise the anthers beyond the perianth (Fig. 126). 



(c) Sessile, if the filaments are absent (Fig. 142). 

 Anther : the swollen upper part, consisting of one or more 



(u.suall^' two) saes or cells which contain the pollen 

 (Fig. 139). 



One surface of the anther is usually more deeply 

 grooved than the other ; this is the face, the otlier benig 

 the back. 



An anther is 



(a) Introrse, if the face is toward the centre of the 

 flower. 



(b) Extrorse, if ttirned otitwai'ds. 



Attachment of the Anther. 



The anther maj- be attached to the filament in three 

 waj^s. It is 



(a) Innate, if its lower end rests on the top of the 

 filament (Fig. 14.'>). 



(b) Adnate, if the back of the anther lies Avith its 

 whole length against (and attached to) the filament 

 (Fig. 144). 



(c) Versatile, if the end of the filament is attached to 

 a point on the back of tlie anther, so that the latter 

 swings about (Fig. 145). 



Dehiscence of the Anther. 



The anther may open in several ways to allow the 

 escape of the pollen. The dehisce'^ ce is 



(a) Lonf/itudinal, when the anther-cell opens from top 

 to bottom by a lateral line (Fig. 14(j). This is the usual 

 mode. 



(b) Bi/ valvi's. when the side of the anther-cell turns 

 uj), as on a hinge (Fig. 147). 



(c) By pores, when the pollen escapes tluough a 

 minute opening at the top of the anther-cell (Fig. 148). 



Connective : the rib or solid part between the anther-cells. 

 Occasionally the connective is obscure or wanting. 



anther 



•■pollfii. 



•I.laiiieiit. 



Fig. i:». Kitr. 110. 



Fig. 143. 



Fig. 145. 



Fig. 142. 



Fig. 144. 



Figs. 1 10. 1 17. 1 IS. 



