60 OBJECT LESSONS IN BOTANY. 
two hundred. Let us learn how to distinguish between 
flowers with definzte and with indefinite stamens. Definite, 
when thev are not more than ten, indefinite, when more than 
ten, or not readily counted. 
107. The stamens are usually separate and distinct, as in 
the Lily, Rhododendron, &e. (Figs. 150, 152), while in the 
Mallow (Fig. 179), Pea, and other flowers, they grow together, 
forming a tube around the pistil; in other words, they are 
monadelphous (Greek, monos, one, adelphos, brotherhood), 
The Pea, or Dielytra, is d¢eadelphous,—the stamens in two 
sets; and the St. Johnswort, polyadelphous,—in three or more 
sets. Another mode of cohesion is seen in the floret of Dan- 
delion (Fig. 180), where the anthers cohere while the fila- 
ments are distinct, 2. ¢., syngenecious. 
108. In two cases we may definitely mark the relative 
length of the stamens. Ddyn’amous stamens (as seen in the 
Mint tribe, and in the Figworts, Fig. 181) are four in num- 
Fig. 183. Pistillate flower of Balm of Gilead. 
Fig. 184. Staminate flower of the same. 
Fig. 185. Begonia: uw, staminate flower; 6, pistillate flower. 
107. Define “stamens monadelphous.” Give examples. Diadelphous, 
Give examples. Polyadelphous. Example. Define “stamens syngenecious.” 
Mention examples. 
