204 WOODY PLANTS 



Pome. A fleshy fruit of which the apple is a typical example. 



Prickle. A spine-like outgrowth of the epidermis. 



Prickly. With prickles. 



Prostrate. Lying flat on the ground. 



Puberulent. With very short hairs; minutely pubescent. 



Pubescent. With hairs. 



Punctate. With translucent or colored dots or depressions. 



Pungent. Sharp pointed. 



Pyriform. Pear-shaped. 



Raceme. An inflorescence with flowers borne on pedicels of equal 



length, and arranged on an elongated axis. 

 Rachis. The axis of a compound leaf. 

 Rank. A row; 2 -ranked meaning in 2 rows. 

 Recurved. Curved backward or downward. 

 Reflexed. Bent sharply backward. 

 Reniform. Kidney- shaped and broader than long. 

 Repand. With a slightly uneven and somewhat sinuate margin. 

 Resinous. Having resin. 

 Reticulate. Arranged as in a network. 

 Retrorse. Turned backward or downward. 

 Retuse. With a shallow notch at a rounded apex. 

 Re volute. Rolled backward from the edge. 

 Rhizome. A horizontal underground stem, usually rooting at the 



nodes and becoming erect at the apex. 

 Rosette. A cluster of prostrate leaves having a radially symmetri- 

 cal arrangement. 



Rostrate. Bearing a beak. 



Rugose. Wrinkled. 



Runcinate. Sharply pinnatifid or incised, the lobes or segments 

 turned backward. 



Sagittate. Shaped like an arrowhead, the basal lobes pointing 

 downward. 



Samara. A winged fruit, a key. 



Scabrous. Rough to the touch when rubbed in at least one direction. 



Scale. A small, rudimentary leaf. 



Scarious. Thin, dry, and translucent, not green. 



Scurfy. Covered with small bran-like scales. 



Segment. One of the parts of a cleft or divided blade. 



Serrate. With sharp teeth pointing forward. 



Serrulate. Finely serrate, the teeth small and shallow. 



Sessile. Without a petiole or stalk. 



Seta. A bristle. 



Sheath. The tubular lower part of a leaf enclosing the stem. 



Sheathing. Enclosing as by a sheath. 



Shrub. A low woody growth which usually branches near the base; 

 a bush. 



Sinuate. With a strongly wavy margin. 



