Flora of North America Glossary
Displaying 726-750 of 2673
| Term | Synonyms | Category | Limitation | Definition |
|---|---|---|---|---|
| dorsal (not recommended) | = abaxial | position | On or pertaining to the side or portion of a lateral structure that faces (or would face) away from the bearing axis when (or if) the axis of the lateral structure is (or were) oriented in the same general direction as the bearing axis. | |
| dorsifixed | fixation | Attached on the abaxial side well above the base. | ||
| dorsiventral | architecture | Having structurally distinct abaxial (dorsal) and adaxial (ventral) portions or aspects. | ||
| dot | = punctum | FEATURE | A small, generally round sector of distinct coloration or relief. | |
| dot-like | = punctiform | plane shape | Very small and generally circular in outline. | |
| dotted 1 | = punctate | coloration | Having small, round, clear or colored spots that contrast with the ground color. See also small-dotted (puncticulate). | |
| dotted 2 | = punctate | relief | Having small, round, shallow depressions or low protrusions. See also small-dotted (puncticulate). | |
| double-… | = bi…, twice… | prefix | Indicating presence of two hierarchical orders of the type of entity or pattern denoted by the term's stem; as in double-pinnate, double-crenate. See also two-… (bi…, di…). | |
| dovetailing | habit | trichome | Papillate and serving to hold a surface to the opposing one of an appressed structure by interlocking with others on the opposing surface; sometimes furcate. | |
| downcurved | = descending | orientation | lateral structure | Salient at its base and then curving downward or backward. |
| downy | = pubescent | pubescence | Of or bearing relatively short, slender, soft, more or less erect, capillate trichomes. See also puberulent. | |
| drooping | orientation | Erect to salient (patent, porrect, spreading) proximally and curving downward distally. | ||
| dropper | = tuberoid | STRUCTURE | An axial outgrowth that descends from a bulb and eventually forms a new bulb; esp. in Orchidaceae. | |
| drupaceous | architecture | fruit | Having the structure and texture of a drupe. | |
| drupe | = stone fruit | nominative | fruit | Fleshy, indehiscent and derived from a single, superior, simple or compound ovary; having a soft outer wall (exocarp and mesocarp) and an osseous inner stone (endocarp) containing the seed(s) (usually only one). |
| drupelet | nominative | fruit | Diminutively drupe-like but derived from one of the simple, superior ovaries of an apocarpous flower, having a fleshy fruit wall and a hard seed (pyrene) within, a distinct constituent in an aggregate fruit; esp. in Rosaceae. | |
| dull | reflectance | Reflecting only a low proportion of incident light, with no apparent sheen. | ||
| duplicate 1 | = conduplicate | arrangement | cotyledons | Adaxially contiguous, folded sharply together longitudinally (one adaxially, one abaxially), and reflexed together, one enveloping the hypocotyl and radicle, the other enveloping the first. |
| duplicate 2 | = conduplicate | vernation | Each leaf folded sharply inward along its longitudinal axis, the adaxial surfaces of each side facing one another. | |
| duration | CHARACTER | Extent of lifetime, or persistence and physical state after maturation. | ||
| dusty | = lentiginose, lentiginous | coating | Covered with a more or less even deposit of minute, dry, macroscopically indistinguishable particles. See also powdery (pulverulent), which is not clearly distinct in its application. | |
| dwarfed | size | plant | Strongly reduced; unusually or unexpectedly very small throughout. | |
| dyad | STRUCTURE | A pair of coherent pollen grains shed as a unit. | ||
| dyadal | arrangement | pollen | Cohering and shed in pairs, each tetrad having separated into halves. | |
| ear | = auricle | STRUCTURE | A small, rounded, lateral lobe at the base of a laminar structure, lying in more or less the same plane as the remainder of the lamina. |
Displaying 726-750 of 2673