GLOSSARY 



Pericarp. — The outer wall of the seed-vessel, sometimes dry 

 and sometimes fleshy. 



Petal. — A division of the corolla. 



Petiole. — The stalk of a leaf. 



Pistil. — The central and seed-bearing part of a flower, consist- 

 ing of the ovary, stigma, and style when present. 



Pistillate. — Having pistils but no stamens. 



Pod.— Any dry fruit that opens when ripe; especially used for 

 the fruit of the Pea family. 



Pollen. — The yellow fertihzing powder contained in the anther. 



Pollination. — The placing of the pollen grains of the stamens 

 upon the surface of the stigma. 



Pubescent. — Hairy. 



Raceme. — A lengthened flower-cluster. 



Ray. — One of the branches of an mnbel; one of the flat mar- 

 ginal flowers of composite heads. 



Receptacle.— The end of the flower-stem, bearing the floral 

 organs, or, in Composite, bearing the flowers. 



Rootstock. — An underground stem— rooting at the joints, and 

 becoming erect at the apex. 



Rotate. — A flat, round corolla with very short tube. 



Salver-shape. — A coroUa which forms a long tube below, ex- 

 panding into a flat border above. 



Scape.— A leafless or nearly leafless flower-stalk rising from the 

 groimd. 



Sepal. — One of the leaves of a calyx. 



Serrate. — With teeth projecting forward. 



Sessile. — Without a stalk. 



Spadex. — A fleshy spike enveloped by a spathe as in the Jack- 

 in-the-pulpit. 



Spathe.— A large, leaf-like bract or pair of bracts enclosing a 

 flower or spadix. 



Spike. — An elongated, closely set flower-cluster. 



Spur. — A hollow sac-like or tubular extension of some part of 

 the blossom, usually nectar-bearing. 



Stalk.— Here used to designate the main ascending part of the 

 plant. 



Stamen. — One of the pollen-bearing organs of a flower. 



Staminate. — Flowers which bear stamens but no pistils. 



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