GLOSSARY 379 



Resin-warts or glands. Glands that secrete resin (bayberry, 



black birch). 



Resiniferous or resinifluous. Exuding or producing resin. 

 Reticulate. Netted, usually referring to veins of a leaf. 

 Retrorsely hairy. With hairs directed downward on stem or 



leaf. 



Revolute. With the margins rolled back, as applied to leaves. 

 Ring-porous. Wood in which the ducts first formed in the 



season are either larger or more crowded than those 



formed in summer (oak). 



Root-climber. A plant climbing by aid of aerial roots. 

 Rudiment. Beginning of an undeveloped member. Con- 

 trasted with vestige. 



Rugulose. Minutely rugose or wrinkled. 

 Savory. Smelling like thyme. 

 Sap. As here used, the fluid that flows from a freshly cut 



leaf-stalk or twig. 

 Scabrous. Rough to the touch. 

 Scale. As usually employed, a reduced leaf, as in winter 



buds, ruscus, etc.: one of the parts of a cone of the larch, 



etc.: a flattened (rhododendron) or peltate (elaeagnus) 



hair. 



Scarious. Thin, dry and papery. 

 Scattered. Not in any of the usual definite groups, as applied 



to leaves, bundle-traces, etc. 

 Scrambling-plants. Climbers that neither coil nor produce 



aerial roots or tendrils (rose). 

 Scurfy. Scaly rather than hairy. 



Sepals. Modified leaves forming the outer floral envelope. 

 Serrate. Saw-toothed: the teeth pointed upward. 

 Serrulate. Serrate with fine teeth. 

 Sessile. Not stalked. 

 Setaceous. Bristle-like, very narrow. 



