GLOSSARY 165 



Pedicel. The stalk of a flower in a cluster. 



Peduncle. The stalk of a single flower or of a flower cluster. 



Peltate. Shield-shaped. 



Perfect. Having both stamens and pistils. 



Perfoliate. Leaves with the base so clasping around the stem that 



the stem appears to go through the leaf. 

 Perianth. The floral envelopes when so modified that there is no 



distinction between sepals and petals. 

 Pericarp. That which encloses the seed. 

 Persistent. Remaining after the growing season. 

 Petal. A division of the corolla. 

 Petaloid. Petal-like. 

 Petiolate. Having a petiole. 

 Petiole. The leaf-stalk. 



Pinnate. Leaves divided along a main central axis. 

 Pinnatifid. Pinnately cut. 



Pistil. The central, ovule-bearing organ of a flower. 

 Pistillate. Having pistUs. 

 Placenta. The point of attachment of ovules. 

 Plumose. Feathery. 



Plumule. The terminal growing point in the embryo. 

 Pollen. Contents of the anthers. 

 Pome. A fleshy fruit like the apple. 

 Procumbent. Lying flat. 

 Pubescent. Hairy. 

 Raceme. A flower cluster in which the flowers are borne on pedicels 



and arranged along a common axis. 

 Racemose. Resembling a raceme. 

 Rachis. The axis of a compound leaf or flower cluster. 

 Radiate. Having ray-flowers. 

 Radicle. The stem in the emhryo. 

 Ray. One of the radiating pedicels in an umbel, or a strap-shaped, 



marginal flower in the head of a compositse. 

 Receptacle. The end of the flower-stalk bearing the flower or head. 

 Reflexed. Bent backwards. 



Regular. Having all parts of similar shape and size. 

 Reniform. Kidney-shaped. 

 Repand. With a wavy margin. 

 Reticulate. In a network. 

 Rhizome. An underground stem. 

 Ringent. Gaping. 

 Rootstock. The same as rhizome. 



