100 



STAMENS. 



[section 9. 



286 



288 



PentuiMphous (five hrothorliouds), wlicii in five sets, as m some species 

 of Ily])ericiuii and ui Amerieaii Liudeu (Fig. 277, 289). 



Polyadelphous (many or several 

 brotlierhouds) is the term generally 

 employed when these sets are several, 

 or even more than two, and tlic par- 

 ticular number is left unspecified. 

 Tlicsc terms all relate to tlie fila- 

 ments. 



Syngenesious is the term to denote 

 that stamens have their anthers united, 

 coalcsccut into a ring or tube ; as in 

 Lobelia (FiJ,^ 285), in Violets, and in 

 all of the great family of Composilae. 



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

 sometimes adjectively, by a series of terms which were the name of classes 

 ill Ihe LiniiEean artificial system, of which the following names, as also the 

 preceding, are a suivival -. — 



Momndrous, i. e. solitary-stamened, when the flower has only one stamen, 



Dia)idrotis, when it has two stamens only, 



Tfiandrous, when it has three 

 stamens, 



Tetrandrous, wlien it has four 

 stamens, 



Pentandroiis, when it has 

 five stamens, 



Hexandrous, when with six 

 stamens, and so on to 



Polyandrous, when it has 

 many stamens, or more than a dozen. 



285. For which terms, see the Glossary, 

 prefixed to -andria (from the Greek), which Linnfens used for andrcpcium, 

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

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

 nection with unequal length. Namely, the stamens are 



Didynamous, wlien, being only four, they form two pairs, one pair longer 

 than the other, as in the Trumpet Creeper, in Gerardia (Fig. 203), etc. 



Fig. 286. Flower of a l\I;illo\v, witli calyx and corolla '^nt away ; showing niona- 

 delplinus .stamens. 



Fig. 287. Monadelphous .stamens of Lupine. 288. Diadelphous stamens (9 and 1) 

 of a l'ea-lilossom. 



Fig. 289. One of the five stanien-chi.sters of the flower of American Linden, with 

 accompanying scale. The five clusters are .shown in .section in the diairrani of this 

 flower, Fig. 277. 



Flo. 2!t0. Five .syngenesions stamens of a Coreopsis. 291. Same, with tube laid 

 open aud displayed. 



They are all Greek numerals 



