GLOSSARY 



WITH PAGE REFERENCES TO EXPLANATORY FIGURES 



Abortive. Defective or barren. 



Achene. A small, dry, one-seeded fruit in which the ovary wall adheres to 



the seed. 

 Acorn. The fruit of the oak. 



Acuminate. Gradually tapering to the apex. Page 7. 

 Acute. Terminating with a sharp angle. Page 7. 

 Alternate. Said of leaves, branches, buds, etc., scattered singly along the 



stem; not opposite. 

 Androgynous. Composed of both staminate and pistillate flowers. 

 Anterior. The front side of a flower, remote from the axis of inflorescence. 

 Anther. The part of a stamen which bears the pollen. Page 8. 

 Apetalous. Without petals. 

 Apex. The top, as the tip of a bud or the end of a leaf which is opposite the 



petiole. 

 Apiculate. Ending in a short-pointed tip. 

 Appressed. Lying close and flat against. 

 Arborescent. Attaining the size or character of a tree. 

 Aromatic. Fragrant; with an agreeable odor. 

 Axil. The upper one of the two angles formed by the juncture of a leaf with 



a stem. 

 Axillary. Situated in an axil. 



Bark. The outer covering of a trunk or branch. Page 195. 



Bearded. Bearing a long, bristle-like appendage, or furnished with long or 



stiff hairs. 

 Berry. A fruit which is fleshy throughout. 

 Bipinnate. Twice pinnate. 

 Blade. The expanded portion of a leaf, etc. 

 Bloom. A powdery or waxy substance easily rubbed off. 

 Bract. A more or less modified leaf subtending a flower or belonging to an 



inflorescence. 

 Branch. A secondary division of a trunk. 

 Branchlet. A small branch. 



Bud. An undeveloped stem or branch, with or without scales. 

 Bud-scales. Modified leaves covering a bud. 

 Bundle-scars. Dots on the surface of a leaf-scar, which are scars left by the 



fibro-vascular bundles which run through the petiole into the blade of 



the leaf. Page 10. 

 Bur. A spiny fruit. 



Calyx. The outer part of a perianth, usually green in color. Page 8. 

 Cambium. The ring or zone of tender, growing cells between the bark and 



the wood. 

 Campamilate. Bell-shaped. 



Capsule. A dry fruit of more than one carpel which splits at maturity to 

 ' release the seeds. 

 Carpel. A simple pistil, or one member of a compound pistil. 

 Catkin. A spike of unisexual flowers, each subtended by a bract, and usually 



deciduous in one piece. 

 Cell. One of the minute units or elements, of very various forms, of which 



plant-s are formed. Page 195. 

 Cellulose. The fundamental substance of the cell-wall. 

 Chambered. Said of pith which is interrupted by hollow spaces. 

 Ciliate. Fringed with hairs on the margin. 

 Cinereous. Ash-gray color. 



Claw. The narrow, stalk-like base of a petal, sepal, etc. 

 Cleft. Cut about half-way to the middle. 

 Cluster. A group of two or more organs (flowers, fruit, etc.) on a plant at 



a node or end of a stem. 

 Columnar. Having the form of a column. 



Compound. Composed of two or more similar parts united into a whole. 

 Compound leaf, one divided into separate leaflets. 

 Compressed. Flattened laterally. 



