Displaying 1 - 30 out of 30 Object(s)
| Term | Definition | |
|---|---|---|
| Bark | All tissue of the trunk and branches external to the vascular cambium. |  |
| Bark slightly fissured | Bark with vertical fissures that are less than 5 mm deep. |  |
| Blaze | A slanted cut through the bark that reveals charcters useful in field identification of trees. |  |
| Cambium | The actively dividing tissue located between the xylem and the phloem which produces xylem to the inside and phloem to the outside of the trunk or the stem.. |  |
| Cork | Protective tissue located on the outside of stems, branches, and roots, consisting of the phellogen or cork cambium, the phellem or cork to the outside, and the phelloderm to the inside. Same as periderm. | |
| Cork cambium | The actively dividing tissue that produces cork to the outside and phelloderm to the inside. | |
| Friable | Brittle; e.g., the bark of Chrysobalanaceae, which breaks into many small pieces when cut with a machete. |  |
| Hard bast | The inner non-functional part of the xylem, i.e., the dead part of the xylem that no longer transports water and nutrients to the leaves but serves as support for the plant. Same as heartwood. | |
| Heartwood | The inner non-functional part of the xylem, i.e., the dead part of the xylem that no longer transports water and nutrients to the leaves but serves as support for the plant. | |
| Hoop mark | A raised ring caused by bud scale scars that may partially or completely encircle the trunk of a tree. |  |
| Inner bark | The functional phloem that occupies the region between the most recent periderm and the vascular cambium. | |
| Lenticel (adj. = lenticellate) | A spongy area in the bark of roots, trunks, and stems that allows the interchange of gases with the environment. |  |
| Lenticellate | Possessing lenticels. |  |
| Outer bark | Dead tissue surrounding branches, trunks, and roots that includes all tissue from the innermost periderm outward. |  |
| Periderm | Protective tissue located on the outside of stems, branches, and roots, consisting of the phellogen or cork cambium, the phellem or cork to the outside, and the phelloderm to the inside. Same as cork. | |
| Phellem | A layer of suberized cells produced outwardly by the cork cambium. | |
| Phelloderm | A layer of parenchyma produced inwardly by the cork cambium. | |
| Phellogen | See cork cambium and periderm. | |
| Phloem | The food-conducting tissue of vascular plants. In most woody plants, the inner bark is phloem. | |
| Phloem arms | A segment of cross-shaped or star-shaped phloem as seen in cross (= transverse) section in some lianas, especially species of Bignoniaceae. |  |
| Photosynthetic bark | Refers to bark that harbors chlorophyll which gives at least some of the bark a green color. Most often plants with photosynthetic bark drop their leaves (are deciduous) at a certain time of year and whatever photosynthesis that takes place at that time is within the bark chlorophyll. Usually trees of species with photosynthetic bark grow under environmental stress at certain times of the year, e.g., during the dry season or when river levels rise and water covers the lower part of the trunk |  |
| Pock marks | A non technical term used to describe small circular depressions on the external surface of bark. |  |
| Sapwood | The outer functional part of the xylem, i.e., the living part of the xylem that transports water and nutrients to the leaves. Same as soft bast. | |
| Scallop marks | A non-technical term used to describe Irregular, shallow depressions on the external surface of bark. |  |
| Slash | A slanted cut through the bark that reveals charcters useful in field identification of trees. | |
| Soft bast | The outer functional part of the xylem, i.e., the living part of the xylem that transports water and nutrients to the leaves. Same as sapwood. | |
| Wood cross section | An anatomical section that runs at right angles to the main axis of the stem or the trunk. |  |
| Wood radial section | A wood anatomical section that runs parallel to the rays. |  |
| Wood tangential section | A wood anatomical section that cuts across the rays of a block of wood or a stem. |  |
| Xylem | The water-and mineral conducting tissue of plants, which (with age) loses this function and serves to support the plant, | |