eee fy ger - 5 | Ce eotas 
MTS ae en yf ey x J te 
~The External Form of Plants.  ~— ~—-139 
ie filaments. are distinct to their base or not. Sometimes the 
whole of the filaments are united into a tube or sheath 
Fic. 273.—Flower Fic. 274.—Pistil Fic. 275.— Mona- Fic.276.- Diadelphous 
of Lanetum, with and tetradyna- delphous stamens stamensof Lathyrus ; 
didynamous sta- mous stamens of Malva. nine filaments united 
mens. of Cochlearia. into a sheath at the 
base ; one free. 
| monadelphous|, as in Malvaceze (Fig. 275) and many Legu- 
minosze ; in other cases into two bundles [dadelphous|, as in 
many Leguminosee (Fig. 
276); or into a larger 
number | polyadel- 
phous|, as in the orange 
(Fig. 277) and Hyseri- 
cum. Again, when the 
filaments are perfectly 
Fic. 277.— Polyadelphous Fic. 278.—Syngenesious Fic. 279.—Stamens of A77s- 
stamens of orange anthers of thistle; the tolochia sessile upon the 
(magnified). filament free (magnified). stigma (magnified). 
