100 



STAMKNS. 



SECTION 9. 



Pentadelphvus (five brotherhoods), when in five sets, as in some species 

 of Hypericum and in American Linden (Fig. 277, 289). 



Polyadelphous (many or several 

 brotherhoods) is tlie term generally 

 employed when these sets are several, 

 or even mure than two, and the par- 

 ticular number is left unspecilied. 

 These terms all relate to the lila- 

 ments. 



Synyencsious is the term to denote 



r~v j\ \ that stamens kave their anthers united, 



LJ| v^J coalescent into a ring or tube ; as in 



Lobelia (Fig. 285), in Violets, and in 

 all of the great family of Composite. 



284. Their Number iii a flower is commonly expressed directly, but 

 sometimes adjective! y, by a scries of terms which were the name of classes 

 in the Liunaean artificial system, of which the following names, as also the 

 preceding, arc a survival : 



Monandrous, i. c. solitary-stameiied, when the flower has only one stamen, 



Diandroits, when it has two stamens only, 



Tfiandrous, when it has three 

 stamens, 



Tetrandrous, when it has four 

 stamens, 



Pentaiirlrous, when it has 

 live stamens, 



Hefandrotm, when with six 

 stamens, and so on to 



Poli/ftH/lro'is, when it has 

 many stamens, or more than a dozen. 



285. For whioh terms, see the Glossary. Tlioy are all Greek numerals 

 prefixed to -andria (from the Greek), which Linnaeus used for andnrrhim, 

 and are made into an English adjective, -androns. Two other terms, of 

 same origin, designate particular cases of number (four or six) in con- 

 nect ion with unequal length. Namely, the stamens are 



Dith/iititiHiits, when, being only four, they form two pairs, one pair longer 

 than the other, as in the Trumpet Creeper, in Gorardia (Fig. 263), etc. 



FIG. 286. Flower of a Mallow, with calyx and corolla cut away ; showing mona- 

 ilcl]ilimis stuniens. 



Fio. 287. Monadelphous stamens of Lupine. 288. Diaflelphous stamens (9 and 1) 

 of a Pca-lilnssoiii. 



FIG. 289. On- ..f tlir five stamen-clusters of the flower of American Linden, with 

 .i. i MiiipanyiiiL,' scale. The five clusters are shown in section in the diagram of this 

 flower, Fi^. '277. 



Fio. 290. Five syngenesious stamens of a Coreopsis. 291. Same, with tube laid 

 open and displayed. 



201 





