| Abortive | That which is brought forth prematurely; coming to naught before it is completed. |
| Achene | A small hard, dry, 1-celled, 1-seeded fruit which does not open by valves. |
| Acrid | Sharp or biting to the taste. |
| Acuminate | Decidedly tapering at the end. |
| Acute | Tapering at the end. |
| Aesthetic | Pertaining to the beautiful. |
| Alternate | Not opposite to each other, but scattered singly along the axis. |
| Ament | A peculiar, scaly, unisexual spike. |
| Anther | The enlarged terminal part of a stamen which bears the pollen. |
| Apex | The tip or end of a bud or leaf, i. e., the part opposite the base. |
| Apical | Pertaining to the tip, end, or apex. |
| Appressed | Lying tight or close against. |
| Arborescent | Tree-like in appearance, size and growth. |
| Aromatic | Fragrant; with a pleasing odor. |
| Astringent | Contracting; drawing together; binding. |
| Awl-Shaped | Tapering from the base to a slender or rigid point. |
| Axil | The upper angle formed by a leaf or branch with the stem. |
| Axillary | Situate in an axil. |
| Axis | The central line of an organ; a stem. |
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| Basal | Pertaining to or situated at base. |
| Berry | A fruit which is fleshy or pulpy throughout. |
| Bloom | A powdery or somewhat waxy substance easily rubbed off. |
| Bract | A modified leaf subtending a flower or belonging to an inflorescence. |
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| Calyx | The outer portion of a flower, usually green in color. |
| Cambium | A thin-walled formative tissue between the bark and wood. |
| Capsule | A dry fruit composed of more than one carpel and splitting open at maturity. |
| Catkin | An ament or spike of unisexual flowers. |
| Ciliate | Fringed with hairs on the margin. |
| Complete | Said of flowers when all parts are present. |
| Compound | Composed of two or more similar parts united in a whole. |
| Compressed | Flattened, especially laterally. |
| Conical | Cone-shaped. |
| Conifers | A group of trees which usually produce their fruit in the form of a cone. |
| Coniferous | Cone-bearing. |
| Contorted | Twisted together or back upon itself. |
| Cordate | Heart-shaped. |
| Corolla | The inner portion of perianth, composed of petals. The bright colored part of most flowers. |
| Corymb | A flat-topped or convex flower cluster, blooming first at the edges. |
| Corrugated | Shaped into grooves, folds, or wrinkles. |
| Crenate | Having rounded teeth. |
| Crown | The upper mass of branches, also known as head. |
| Cyme | A flower cluster blooming from apex or middle first, usually somewhat flat. |
| Cymose | In a cyme; cyme-like. |
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| Deciduous | Falling off, usually at the close of the season. |
| Decurrent | Extending down the stem below the insertion. |
| Defoliation | Removal of foliage. |
| Dehiscent | Splitting open. |
| Deltoid | Delta-like, triangular. |
| Dentate | Toothed, usually with the teeth directed outward. |
| Depressed | Flattened from above. |
| Digitately-compound | With the members arising at the same point at the end or top of the support. |
| Dioecious | Unisexual, with the two kinds of flowers on different plants. |
| Disseminated | Scattered; thrown broadcast. |
| Divergent | Pointing away; extending out. Said of buds which point away from the twigs. |
| Downy | Covered with fine hairs. |
| Drupaceous | Resembling or constructed like a drupe. |
| Drupe | A fleshy fruit with a pit or stone. |
| Elongated | Long drawn out. |
| Emarginate | Having a shallow notch at the apex. |
| Entire | Margin smooth, not cut or roughened. |
| Epidermis | The outer layer or covering of plants. |
| Exotic | Of foreign origin. |
| Exudation | Oozing out of sap, resin, or milk. |
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| Falcate | Scythe-shaped. |
| Fascicle | A cluster, usually dense. |
| Fetid | Ill-smelling. |
| Fibrous | Consisting of fibers; woven in texture. |
| Filament | The stalk bearing the anther. |
| Fissures | Grooves, furrows, or channels as in the bark. |
| Flora | The complete system of plants found in a given area. |
| Fluted | Grooved, corrugated, channeled. |
| Follicles | A dry fruit of one carpel, splitting on one side only. |
| Forestry | The rational treatment of woodlands for their products. |
| Fruit | The seed-bearing product of a plant of whatever form. |
| Fungus | Obvious typographical errors have been silently corrected. All other variations in hyphenation spelling and punctuation remain unchanged.
