Flora of North America Glossary
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| Term | Synonyms | Category | Limitation | Definition |
|---|---|---|---|---|
| translator arm | = caudicle | STRUCTURE | An attenuate end portion by which a pollinium adheres to a pollinating insect, either directly or by means of a terminal viscidium, the latter, when present, sometimes attached by an intervening stipe; esp. in Asclepiadaceae, Orchidaceae. | |
| translucent | < hyaline, pellucid | coloration | Transmitting light uniformly and diffusely. See also transparent. | |
| transparent | < hyaline, pellucid | coloration | Transmitting light uniformly and without diffusion; clear, like glass. See also translucent. | |
| transverse 1 | dehiscence | More or less perpendicular to the central axis. | ||
| transverse 2 | orientation | Perpendicular to the long axis of the context of reference. | ||
| trapeziform | plane shape | Four-sided and either asymmetrical or bilaterally symmetrical like a triangle truncated distally perpendicular to its central axis. | ||
| tree | nominative | plant | Perennial, woody, more or less erect, relatively tall, with one or more distinct aboveground portions each with a single, relatively stout, columnar, main stem (trunk or bole) that bears branches. See also bush, frutex, shrub, subshrub, suffrutex, undershrub, woody clump. | |
| tree-form | > arboreous, arborescent | habit | plant | Having or developing the character of a tree. See also bushy, frutescent, fruticose, shrubby, subshrubby, suffrutescent, suffruticose, woody-clumping. |
| tree-like | = dendritic | architecture | Like the branched axial structure of a tree. | |
| tri… 1 | = three-… | prefix | Indicating presence of or constitution by three entities of the type denoted by the term's stem; as in tricarpellate, trifurcate, trilocular. | |
| tri… 2 | = thrice-…, triple-… | prefix | Indicating presence of three hierarchical orders of the type of entity or pattern denoted by the term's stem; as in tripinnate. See also entries for particular terms beginning with this prefix whose meanings, at least in some applications, are more specific than usually indicated by such combination. | |
| trichome | > bristle, capillus, glochid, glochidium, hair, lepis, scale, seta, squama, squamella, squamule; >< cilium | STRUCTURE | Any superficial, unicellular or multicellular structure arising entirely from an epidermis. Unlike other epidermal enations or coverings, trichomes are cellular structures. | |
| trichotomocolpate | architecture | pollen grain | Having a triradiate surficial groove (colpus). | |
| trichotomous | architecture | axis | Branching by division of the apical meristem producing three coordinate but not necessarily equal derivatives from each division. | |
| trigamous | reproduction | inflorescence | Bearing flowers of three differing sexual constitutions; esp. in Asteraceae (Compositae). | |
| trigeminous | = tergeminate, trijugate | architecture | foliaceous structure | Compound with three orders of leaflets, each order bifoliolate. |
| trigonous | = three-angled, triquetrous; > deltoid, obdeltoid | solid shape | Elongate with three sides that meet at acute or obtuse angles. | |
| trijugate | = tergeminate, trigeminous | architecture | foliaceous structure | Compound with three orders of leaflets, each order bifoliolate. |
| trilete | architecture | spore | Having a triradiate tetrad scar. | |
| trioecious | reproduction | taxon | Having some flowers or spikelets functionally unisexual and some bisexual, some plants having only staminate or only pistillate types, other plants having only bisexual types. | |
| triple-… | = thrice-…, tri-… | prefix | Indicating presence of three hierarchical orders of the type of entity or pattern denoted by the term's stem; as in triple-palmate. See also three-…. | |
| triquetrous | = three-angled, trigonous; > deltoid, obdeltoid | solid shape | Elongate with three sides that meet at acute or obtuse angles. | |
| trochlear | = pulley-wheel-shaped | solid shape | Discoid (disciform) but with the circumferential surface concave between faces. | |
| trophophyll | = sterile frond | STRUCTURE | A frond that does not bear sporangia; in Polypodiophyta. See also fertile frond. | |
| trowel-shaped | = trullate, trulliform | plane shape | Broadest below the middle, more or less straightly attenuate to either end, the sides angled at the level of greatest width; like the blade of a mason's trowel. See also obtrullate, obtrulliform. |
Displaying 2476-2500 of 2673