THE ANDECECIIJM. 



59 



independent of each other (Meconopsis, fig. 308) ; — monadelphous {st. monadelpha), 

 when the filaments are more or less united in a single tube {Oxalis, fig. 309 ; Mallow, 



309. Oxalis. 310. Mallow. 



Androecium aiid pistil. Androecium (mag.). 



312. Lotus. Andrcecium and pistil. 



313. St. John's Wort. 

 Flower cut vertically. 



fig. 310; Cytisus, fig. 311); — diadelphous (st. diadelpha), when united into two 

 columns {Lotus, fig. 312); — triadelphus {st. triadelpha), when in three bundles 

 {St. John's Wort, fig. 313) ; — polyadelphus {st. polyadelpha), 

 when in several simple or branched bundles {Orange, fig. 

 314 ; Castor-oil, fig. 315) ;- — syngenesious {st. syngenesa), when 

 the anthers cohere {Thistle, fig. 316). Sometimes the co- 

 hesion extends to the filaments also {Lobelia, Melon, fig. 

 317). The stamens are said to be gynandrous {st. gynandra), 



when they are united throughout their length to the pistil {Orchis, fig. 188 ; Ari- 

 stolocMa, fig. 318) ; in this- case they are necessarily epigynous. 



The filament may be 

 cylindric or filiform {Rose), or 

 capillary {Wheat, fig. 335), or 

 subulate or awl-shaped {Tulip, 

 fig. 345), or flat and dilated 

 at its base {Campanula, fig. 

 319). It is said to be bi- tri- 

 cuspidate, when forked at 

 the top, or three-toothed, 

 with the mid-tooth antheri- 

 ferous {Garlic-onion, fig. 

 320;, Orambe, fig. S21) ; — appendiculate, when it bears an appendage; such 



319. Campanula. 

 Pistil and ttamen. 



320. Onion. 

 Stamen (mag.). 



321. Crambe. 

 Andrcecium and pistil. 



322. Borage. 

 Stamen (mag.). 



