158 GLOSSARY. 



Pistillate. Pertaining to the pistil. 



Polymerized. Changed into another substance, having the same atomic 



proportions but a higher molecular weight. 

 Pubescent. Soft hairy. 

 Pulmonary. Relating to the lungs. 



Pyloric. Relating to the pylorus, the opening from stomach to intestine. 

 Raceme. A flower cluster resembling a spike but with the flowers stalked. 

 Rachis. The central axis of a spike or of a compound leaf. 

 Radicle. The part of the seed that develops into the root. 

 Revolute. In-rolled. 

 Reflexed. Bent back. 



Regurgitation. Expulsion of stomach contents into mouth or nose. 

 Rumen. The paunch, or first stomach. 

 Ruminants. Cud-chewing animals. 

 Sagittate. Arrow-shaped. 

 Salivation. Excessive production of saliva. 

 Sclerotium. The wintering stage of Ergot, the hardened mass replacing the 



grain of the affected grass. 



Screenings. Materials screened from grain or seed. 

 Sepal. One of the segments of the calyx. 

 Serrate. Toothed like a saw. 

 Sessile. Not stalked. 



Serum. The thin fluid which separates from blood when it clots. 

 Silica. Silicon dioxide, the substance of which quartz sand is composed. 

 Sinapism. A mustard-plaster. 

 Sinuate. Wavy. 



Spadix. A spike with a fleshy axis. 

 Spathe. The bract associated with the spadix. 

 Species. A group of plants or animals so nearly alike as to show only 



individual differences. 



Sphacelia. The stage of Ergot where summer spores are produced. 

 Spike. A flower cluster with sessile blossoms arranged along a stalk, the 



youngest at the tip. 

 Spikelet. A secondary spike. 

 Sporangium. A spore-case. 



Sporangiophore. A structure bearing sporangia. 

 Spore. A simple reproductive body usually composed of one cell. 

 Stamen. The pollen-bearing organ of a flower. 

 Staminate. Pertaining to stamens. 

 Sterile. Producing no fruit. 

 Stipules. Bracts at the base of a leaf. 



