THE FLOWER. 



Didynamous is a term applied to an androecium of four sta- 

 mens in two pairs, a longer and a shorter, as in Fig. >')!. 



Tetniili/iitnnoiis is similarly applied to that of six stamens, two of 

 them shorter, in the manner characteristic of Cruciferae, Fig. 396. 



!.">!. Terms which denote coalescence of stamens, whether by 

 their filaments or their anthers, are 



Mnniiilfljthous^ that is, in one brotherhood, by coalescence of 

 the filaments into a tube, as in the Mallow (Fig. 48.")). Lupine 

 (Fig. 484), Lobelia (Fig. 488), &c. 



D!titl<-li>liu.s. in two brotherhoods, by coalescence of the fila- 

 ments into two sets; sometimes an equal number in each, as in 

 Fumariaceae (Fig. 390), sometimes nine in one set and one 

 separate, as in the Pea (Fig. 483) and most Papilionacea-. 



Triadelphous, with filaments united in three sets or clusters, as 

 in Ilypericum. 



Pentadelphous, in five sets, as in Linden, Fig. 398, 399. 

 But in general, when the sets are several, without regard to the 

 number the stamens are said to be Polyadelphous. 



Syngenesious, when the stamens are united by their anthers 

 into a tube or ring ; as in the whole vast order of Composite 



stig. 



is: i 



191 



m 



( Fig. 486, where they are five in number and the filaments dis- 

 linct), in Cuciii-bita (Fig. 489, 490, where they arc three in 

 number and the filaments partly monadelphous), and in Lobelia 

 (Fig. INN, where the}- are also five and the long filaments are 

 mainly monadelphons) . 



Kid. Iss. Flower c,|" Lobelia eanlinalis. with tnhr of cor., lla divided mi our side; 

 filaments and anthers united into a tube: /! tube of filaments; ".of antin-rs. 



I-'li;. !-!> Male llower of Cm-ui-liita (Squash), with liinli of calx \ ami rorolla cut 

 away, to show Ihr stamens, \\7... tlir.'c tilainonts. scparatr at luisc luit monadelphOUS 

 al'ovc, ami tlitvr synu'cncsioiis anthrrs in a kind of licail. 4!H. Staim-lis of the same, 

 fiilart;cil ami tlir HI>IM'V I'art cut away, to show the union. Tin- anthers are sinuous. 

 491. A ili'tadn-il stamen of the Melon, with loosely sinuous anther. 



I-' 11,'. l:ij. Stamens ami style of a C'yiirii>ciliuin. united into one body or column: 

 O. anthers; 7. enlarged sterile stamen ; .s/ir/. the stigma. 



