Displaying 161 - 200 out of 621 Object(s)
| Term | Definition | |
|---|---|---|
| Corneous | With a texture like an animal's horn. | |
| Corniculate | Bearing a small, hornlike projection. | |
| Cornute | Bearing a hornlike projection. | |
| Coroniform | Shaped like a crown. | |
| Costa (adj. = costate) | A rib, sometimes to describe the midrib of a leaf or leaflet or to describe a raised line, less conspicuous than a wing, that extends down an organ such as a hypanthium or a fruit. A costa is less obvious than a wing. |  |
| Crassulate | Thick. | |
| Crateriform | Cup-or bowl-shaped. | |
| Crenate (diminutive = crenulate) | Referring to margins with the teeth rounded at the apex. Compare with serrate. |  |
| Crescent-shaped (crescentic) | A plane shape similar to the moon in its first quater. | |
| Cristate | Crested. | |
| Cross-section | A cut at right angles to the axis of an organ. Same as transverse section. |  |
| Cruciform (cruciate) | Cross-shaped, e.g., the petals of species of Brassicaceae are often arranged in a cross-like pattern. |  |
| Crustaceous (crustose) | Hard, thin, and brittle. | |
| Cucullate | Hood-shaped. |  |
| 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°. |  |
| Cusp | A short, sharp, abrupt point usually at the tip of a leaf or other organ. | |
| Cuspidate | Bearing a cusp. | |
| Cyathiform | Cup-shaped. | |
| Cymbiform | Boat-shaped. | |
| Declinate | Curved downward; e.g., the filaments of some species of Lamiaceae. | |
| Decompound | More than once-compound. | |
| Decurrent | Extending down and adnate to an axis; e.g., the blade of a leaf onto the petiole, the leaf blade onto the stem, or the secondary veins onto the midvein in some species of Anacardiaceae, Lauraceae, and Monimiaceae. | |
| 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. |  |
| Deflexed | Bent downward. | |
| Deliquescent | Tending to rapidly wilt, lose rigidity, and dissolve into semiliquid; e.g., perianth parts. | |
| Deltate | Shaped like an equilateral triangle. Same as deltoid. |  |
| Dendritic | Branched in a treelike fashion; often used to refer to a type of trichome. | |
| Dentate (diminutive = denticulate) | Toothed; having a margin with sharp teeth oriented at right angles to the central axis of the structure bearing them. |  |
| Dextrorse | Twisted from the left to the right as viewed from above (clockwise); e.g., the petals in a floral bud. Opposite of sinistrorse. | |
| Diaphanous | Translucent. | |
| Dichotomous growth | In morphology, a axis that successively forks into two more or less equal parts. |  |
| Digitate | Arranged as fingers on a hand; in the Cyperaceae and Poaceae, referring to such an arrangement of spicate branches of an inflorescence; for application to leaves, see palmate. |  |
| Dilated | Spread out or expanded, e.g., the base of a filament in relation to the more constricted apex. |  |
| Dimidiate | Divided into two halves such that the smaller half is almost lacking; e.g., the leaflet blades of Dimorphandra (Fabaceae). | |
| Dimorphic | Occurring in two forms; e.g., in the Mimosaceae, different flower shapes in the same inflorescence. Compare with heteromorphic and monomorphic. |  |
| Discoid | In the shape of a thin, flat, circular plate. | |
| Discolor (adj. = discolorous) | When two sides of an organ, such as a leaf blade, are different colors. |  |
| Dissepiment | See septum. | |
| Distal | Remote from the place of attachment. Opposite of proximal. Same as apical. |  |
| Distichous | Referring to structures that are arranged in two rows; usually referring to the way in which leaves or bracts are inserted on an axis. Same as two-ranked. |  |