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F
GLOSSARY
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GLOSSARY |
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| ABSCISSION
LAYER Cork layer at base of leaf stalk of Deciduous trees in autumn causing leaf to fall. |
CALLUS Swelling usually surrounding diseased or damaged tissue on a branch or trunk. |
DECUSSATE Leaves in pairs on opposite sides of stem, but each pair at right angles to the next. |
| ACHENE Small,dry,Indehiscent fruit with a single seed. Its thin wall distinguishes it from a Nutlet |
CAMBIUM Layer of living just under bark and at growing tips of shoots and roots. |
DENTATE Margin with sharp teeth. |
| ALIEN An introduced plant which has become Naturalised. |
CATKIN Male or female, wind pollinated flowers hanging in chains |
DIGITATE Leaflets spreading like the fingers of a hand. |
| ALTERNATE An arrangement of leaves on a stem, each Node bears on a leaf on alternate sides of the Stem. |
COLUMNAR Narrow, almost parallel-sided crown. |
DIOECIOUS Separate male and female flowers borne on different plants. |
| ANNUAL A plant completing its life cycle within a single year. |
COMPOUND Leaf made up of several distinct leaflets. |
DORSEL Back or outer surface of an organ |
| ANNUAL
RING Ring of wood laid down in stems and branches during one growing season. |
CONE AXIS Central core of cone.
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DOUBLE-TOOTHED Margin with large teeth, each of which as smaller teeth. |
| ANTHER Part of a stamen that releases pollen. |
CONE SCALE Woody structure rising from cone axis, enclosing developing seeds. |
DRUPE Fleshy fruit with the seed[s] surrounded by a stony layer. |
| ARIL Fleshy seed coat. |
CONIFEROUS Cone bearing tree. |
ELLIPSOID Solid body, widest at the middle. |
| AURICLE Small, ear-like lobe. |
COPPICING Cut down regularly to the base to encourage growth of several stems from one root system. |
ELLIPTIC Outline, widest at the middle, rounded and narrowed towards each end. |
| AWN A stiff terminal bristle, on a fruit or the Lemma in grasses. |
CORDATE Heart shaped. |
ENDEMIC Native to a restricted region, usually a single country or small area. |
| AXIL The place between a stem, twig , or leaf and the main stem |
COTYLEDON The seed leaf, first to emerge from the seed. |
ENTIRE Margin unbroken by teeth or lobes. |
| BARK Protective layer on the outside of stems and branches. |
CROWN Branches and upper part of trunk of tree. |
EVERGREEN Tree or shrub which retains its leaves all year. |
| BRACT
SCALE Thin, papery, seed bearing structure rising from cone axis above cone scales |
CRENATE Margin with shallow, rounded teeth. |
FAMILY Large group of similar plants, made up of several genus. |
| BRANCHLET Small branch, between branch and twig in size. |
CUTICLE Waxy surface of a leaf, reducing water loss and protecting against damage. |
FASTIGATE Tree with nearly vertical branches. |
| BUD Developing shoot or flower |
CUTTING Non-reproductive part of a plant, stimulated artificially to form an identical new individual. |
FERTILISATION Union of a male pollen grain with a female ovule to form the embryo of a new individual. |
| BUD SCALE Scale that covers and protects a developing bud. |
DECIDUOUS Trees which drops its leaves in autumn. |
FLUTED With deep vertical grooves. |
| BURR Lumpy outgrowth from a trunk, often covered with sprouting shoots. |
DECURRENT The base continued down the stem as a wing. |
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