GLOSSARY 



139 



PANICLE A loose, irregularly-compound inflorescence with 



flowers or groups of flowers on distinct stalks. 



PERENNIAL Lasting more than two years. 



PETAL See page 16. 



PISTIL See page 16. 



POLLEN The fecundating powder produced in the stamens. 



RACEME An inflorescence bearing stalked flowers along a 



common, more or less elongated, main stalk. 



RADICLE Rootlet; see page 13. 



ROOTSTOCK Underground stem, rooting at the nodes and gener- 

 ally creeping near the surface. 



RUNNER A slender creeping branch, from the base of the stem 



or from a rootstock, which is capable of forming 

 independent plants. 



SELF-FERTILI- 

 ZATION The fertilization of a plant by its own pollen. 



SELF-STERILE Unable to produce seed unless fertilized by another 

 individual. 



SHEATH A tubular envelope, as the lower part of the leaf in 



grasses. 



SPECIES A class of individuals possessing the same forms and 



properties which they transmit to their offspring. 



SPIKELET See page 10. 



STAMEN The male organ of a flower; see page 10. 



STANDARD See page 16. 



STERILE Barren; unable to produce seed. 



STIPULE See page 15. 



TAPROOT A root which is the prolongation downwards of the 

 stem. 



TRIFOLIATE Having three leaflets. 

 TUBERCLE A nodule. 



WHORL An arrangement of leaves, etc., in a circle around 



the stem. 



