Displaying 376 - 400 out of 1575 Object(s)
| Term | Definition | |
|---|---|---|
| Cross-section | A cut at right angles to the axis of an organ. Same as transverse section. |
|
| Crown | The top of a tree; i.e., all but the trunk. |
|
| Crownshaft | A conspicuous cylinder formed by the tubular leaf sheaths of some palms; e.g., the royal palms (Roystonea spp., Arecaceae). |
|
| Cruciform (cruciate) | Cross-shaped, e.g., the petals of species of Brassicaceae are often arranged in a cross-like pattern. |
|
| Cryptogam | A plant that does not produce seed. |
|
| Cucullate | Hood-shaped. |
|
| Cucullate | Hood-shaped. From the Latin word cucullus which translates as hood. |
|
| Culm | The stem of a grass or sedge. |
|
| Cuneate (cuneiform) | Wedge-shaped; usually referring to the base of a two-dimensional organ (such as a leaf blade) of which the angle formed by the meeting of the margins is less than 90°. |
|
| Cupule | A cup-shaped structure that usually subtends a fruit; e.g., that of many species of Lauraceae and Rhabododendron amazonicum. |
|
| Curator | A scientist that takes care of specimens in a museum. In the case of botany, the museum is a collection of dried specimens and labels glued to special paper which are archived in special cabinets. |
|
| Curved appendages | Referring to an appendage, most often a vestigial stamen, that arises from a non-expanded part of the ligule and curves slightly inward. |
|
| Cushion plant | The growth form of a plant, often of high altitudes, in which numerous stems are congested together resulting in a low, pillow or cushion-like growth form. |
|
| Cuticle | A waxy layer of the leaf blade that covers the epidermal cells. |
|
| Cuticle | A waxy layer of the leaf blade that covers the epidermal cells. The cuticle is sometimes modified to forma papillae. |
|
| Cuticular ridge | A raised ridge that parallels or curves around the stomatal crypts. |
|
| Cuticular wax | Flakes found on the abaxial leaf blade surface that look like they could have been formed by shedding of the cuticle. |
|
| Cyathium (plural = cyathia) | An inflorescence consisting of several naked staminate flowers accompanied by usually one naked pistillate flower and subtended and mostly enclosed by a cup-shaped involucre, characteristic of Euphorbia (Euphorbiaceae). |
|
| Cylindrical fruit | A fruit that is much longer than it is broad. |
|
| Cylindrical fruit | A fruit that is much longer than it is broad. |
|
| Cyme | A determinate inflorescence in which growth of the central axis is terminated by a flower that opens first and each branch or pair of branches subtending this flower then is terminated by a single flower. This pattern, when repeated several times, often results in a somewhat flat-topped inflorescence. |
|
| Cypsela (plural = cypselae) | A dry, indehiscent fruit derived from an inferior, bicarpellate ovary; e.g., in Asteraceae. Similar to an achene, but derived from an inferior ovary and attached to the fruit wall throughout, i.e., not at a single place as in an achene. |
|
| Deciduous | A process in which certain structures of a plant, e.g., leaves, fall in response to enviromental changes. |
|
| Decusada, decusado | Se refiere a las hojas opuestas en un mismo plano y a la vez esas son alternas con el siguiente par opuesto. |
|
| Decussate | A type of leaf placement in which opposite leaves at a node are arranged at right angles to the pair below and above them. |
|