GLOSSARY 201 



Deciduous. Falling off, usually at the end of the season. 

 Decompound. More than once -compound, the primary divisions 



divided at least once again. 

 Decumbent. Stems or branches reclining, but the ends ascending. 

 Decurrent. Continued down the twig in a ridge or wing, as applied 



to leaf-bases. 

 Deltoid. Shaped like the Greek letter A. 

 Dentate. Toothed, with the teeth pointing outward. 

 Denticulate. Finely dentate, the teeth small and shallow. 

 Depressed. Somewhat flattened from above. 

 Diaphragmed. Said of pith which is solid with transverse bars of 



denser tissue at short intervals. 

 Digitately compound. Leaflets diverging, like the fingers spread. 

 Dilated. (Of the bases of a petiole) Conspicuously broadened, the 



broadened part usually much thinner, atle^^t near the margins. 

 Dissected. Cut or divided into numerous narrow segments. 

 Distinct. Separate; (of leaf segments or leaflets) not confluent 



with other segments or leaflets by a winged rachis or mid- 



vein. 

 Divergent. Extending out. Said of buds which point away from the 



twigs. 

 Divided. Cleft to the base or to the midvein. 

 Ellipsoid. An elliptical solid. 

 Elliptic. With the outline of an ellipse. 

 Emarginate. With a notch at the tip. 

 Entire. Without divisions, lobes, or teeth. 

 Epidermis. The outer layer or covering of plants. 

 Evergreen. Not falling at end of growing season, having green . 



leaves in winter. 

 Excavated. Hollowed out; hollow. 

 Exfoliating. Peeling away. 

 Expanded. (Of the base of a petiole) Conspicuously broadened, the 



broadened part not becoming very thin (cf. dilated). 

 Fascicle. A close cluster or bundle, as of Pine leaves. 

 Fibrous. Resembling fibers. 



Filiform. Thread -shaped; long, slender, and circular in cross- 

 section. 

 Fimbriate. Fringed. 

 Flaccid. Without rigidity. 



Flexuous. Zigzag; bending alternately in opposite directions. 

 Fluted. Grooved longitudinally. 

 Foliaceous. Leaf-like in appearance. 

 Foliolate. With separate leaflets. 

 Forked. Divided into nearly equal branches. 

 Fusiform. Spindle-shaped; swollen in the middle and tapering 



toward each end. 

 Glabrate. Almost without hairs; with occasional hairs. 



