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 tlie 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. 



