xvi GLOSSARY. 



Heteromorphous species are those in which there is more than one form 



of flower. 

 Hypogynous, situated under the ovary. 



Monoecious species (p. 28) are those in which the stamens and pistils are 



in separate flowers, but on the same plant. 

 Monomorphous species are those in which all the flowers resemble one 



another in the relative position of the stamens and pistil. 



Nectary, that part of the flower which secretes honey. 



Perigynous, situated around the ovary. 



Petals, the leaves of the corolla. 



Pistil, the central organ of the flower. It generally consists of one or 

 more ovaries and stigmas ; the stigma is often raised on a stalk, called 

 a " style.'' 



Polygamous species are those which have male, female, and hermaphro- 

 dite flowers on the same or on distinct plants. 



Proterandrous plants (p. 28) are those in which the stamens come to 

 maturity before the pistil. 



Proterogynous plants (p. 28) are those in which the pistil comes to 

 maturity before the stamens. 



Sepals (p. 27) the leaves of the calyx. 



Stamens (p. 27) the parts of a flower which generally stand next the 



corolla, on the inner side. They usually consist of a stalk or 



filament, and an ' ' anther " containing the pollen. 

 Stigma (p. 27), that portion of the pistil in which pollen must be 



deposited in order to fertilise the flowers. 

 Style, the stalk of the stigma. 



Trimorphous species are those in which there are three forms of flowers, 

 differing in the relative position or length of the anthers and stigma. 



