Displaying 1 - 32 out of 32 Object(s)
| Term | Definition | |
|---|---|---|
| Aerenchyma | Tissue with large,intercellular, air-filled spaces; e.g., in the petioles of many species of Araceae and in the roots, stems, and leaves of many aquatic plants. |  |
| Bud | A young shoot from which leaves or flowers may develop, the former is a leaf bud and the latter is a flower bud. |  |
| Bud naked | Referring to a bud that is not covered by bud scales. |  |
| Bud scale | A reduced leaf that encloses a bud. | |
| Chambered pith | Referring to a pith that has chambers in the stem caused by septations at right angles to the long axis. |  |
| Cladode | A flattened, green, photosynthetic stem; e.g., in some Cactaceae. |  |
| Cortex | The tissue in a stem or root between the epidermis and the vascular tissue. | |
| Cortical bundle | Referring to a a vascular bundle that penetrates the cortex of the stems of plants. |  |
| Haustorium (plural = haustoria) | The tissue-penetratingand food-absorbing organ of a parasitic plant. |  |
| Internode | The part of the stem between nodes. |  |
| Lateral bud | A bud arising in the axil of a leaf. Same as axillary bud. | |
| Mucilage | A sticky, viscous liquid; e.g., that present among the leaf bases of Rapateaceae or in canals penetrating the ovary and sepals of some Lecythidaceae. |  |
| Muellerian bodies (also spelled Müllerian bodies) | Glycogen-rich food bodies located on fuzzy pads (trichilia) at the base of the petiole of some species of Cecropia (Cecropiaceae). Compare with pearl bodies. |  |
| Node | The part of the stem where buds, leaves, and or adventitious roots are produced. | |
| Ocrea | A structure formed of stipules fused into a sheath and surrounding the stem; i.e., a diagnostic character of the Polygonaceae; in palms, an extension of the leaf sheath beyond the petiole insertion, is a different kind of ligule. |  |
| Oral setae | Coarse, bristlelike appendages present at the summit of the leaf sheaths of some grasses. |  |
| Perula (plural = perulae, adj. = perulate) | A scale of a leaf bud. The same as bud scale. | |
| Phylloclade | A branch that has taken on the form and function of a leaf. | |
| Phyllode | A petiole and or rachis that has taken on the form and function of a leaf; e.g., in certain species of Acacia. |  |
| Pith | The spongy ground tissue occupying the center of many stems. |  |
| Prostoma (plural = prostomata) | An indented and/or membranous area through which plant-associated ants bore into the hollow chambers of the trunks and stems; e.g., in many species of Cecropia (Cecropiaceae). | |
| Pseudobulb | In Orchidaceae, a specially modified stem that is variously swollen and stores food and water. Pseudobulbs are common in epiphytic but are lacking in terrestrial species. |  |
| Pseudostem | The apparent stem of Musa (Musaceae), Phenakospermum (Strelitziaceae), and some other monocots which is actually a cylinder formed by overlapping leaf bases. |  |
| Stem | The main ascending axis of a plant. |  |
| Stem hollow | Referring to a stem that does not have tissue in the center, e.g., the hollow stems of grasses. | |
| Stem solid | Referring to a stem that has tissue in the middle, i.e., the cortex is solid. | |
| Tendril at right angle | Referring to a tendrial that arises at a right angle to the leaf, e.g., species of Cucurbitaceae. |  |
| Tendril axillary | A tendril that arise in the axil of a leaf blade, e.g., species of Passiflora. |  |
| Tendril leaf opposed | A tendril that arises opposite the insertion of a leaf; for example, Parthenocissus quinquefolia and many othe species of Vitaceae. |  |
| Terminal bud | A bud that terminates the end of a stem or a twig. | |
| Trichilium (plural = trichilia) | A pad of densely clustered trichomes located at the abaxial base of the petiole of some species of Cecropia (Cecropiaceae) and containing Muellerian bodies that are a source of food for ants. | |
| Vascular trace | That part of a vascular bundle extending from the vascular cylinder of the stem into the base of the leaf. |  |