Flora of North America Glossary
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| Term | Synonyms | Category | Limitation | Definition |
|---|---|---|---|---|
| true | derivation | indusium | Constituting a distinct enation from the epidermis, not simply a marginal fold of the lamina as a whole. | |
| trullate | = trowel-shaped, 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. | |
| trulliform | = trowel-shaped, trullate | 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. | |
| trulloid | solid shape | Elongate, basically square in transverse section, broadest below the middle, regularly attenuate to angular ends, all faces essentially plane. See also obtrulloid. | ||
| trumpet-shaped | = tubiform | solid shape | Obteretely tubular with a relatively short distal flare (the limb if a perianth, calyx, or corolla). | |
| truncate 1 | = abrupt | apex | Having a distal boundary that is generally straight or plane and approximately perpendicular to the central axis. | |
| truncate 2 | base | Having a generalized proximal boundary that is more or less straight or plane and approximately perpendicular to the central axis. | ||
| trunk | = bole; < main stem, primary stem | STRUCTURE | The relatively stout, columnar, main stem of a distinct aboveground portion of a tree. | |
| tuber | STRUCTURE | An enlarged, basically subterranean stem segment or thallus outgrowth containing a high proportion of storage tissue and functioning as a perennating and often vegetatively propagative structure. | ||
| tubercle | FEATURE | A small, rounded, knot-like swelling or wart-like protrusion. | ||
| tubercular | = tuberculose | solid shape | Comprising small knot-like segments. | |
| tuberculate | = tuberculose, verrucose, warty | relief | Covered with small, relatively broad, irregularly shaped, obtuse protrusions. | |
| tuberculose 1 | = tuberculate, verrucose, warty | relief | Covered with small, relatively broad, irregularly shaped, obtuse protrusions. | |
| tuberculose 2 | = tubercular | solid shape | Comprising small knot-like segments. | |
| tuberoid (root-stem) | = dropper | STRUCTURE | An axial outgrowth that descends from a bulb and eventually forms a new bulb; esp. in Orchidaceae. | |
| tuberous 1 | architecture | plant | Bearing tubers. | |
| tuberous 2 | architecture | structure | Resembling a tuber in shape and texture, but not ontogenetically such; esp. roots. | |
| tubiform | = trumpet-shaped | solid shape | Obteretely tubular with a relatively short distal flare (the limb if a perianth, calyx, or corolla). | |
| tubular | solid shape | Cylindric or attenuate-cylindric overall and with a hollow interior open at one or both ends. | ||
| tuft | > coma | STRUCTURE | A distinct, compact, relatively dense, homogeneous aggregation of plants or constituent structures such as stems, branches, leaves, bracts or trichomes. | |
| tufted 1 | = cespitose | habit | plants | Growing in distinct, compact, relatively dense, turf-like aggregations. |
| tufted 2 | > floccose | pubescence | Of or bearing tufts of soft, fine, capillate trichomes that rub off easily. | |
| tumid | = swollen, turgid | solid shape | Engorged in appearance, convex overall with the surface appearing taut , as though from internal pressure. See also inflated, which is not clearly distinct in its application. | |
| tunic | STRUCTURE | A membranous covering outside the epidermis, especially around bulbs and corms, often becoming loose, sometimes scarious. | ||
| tunicate | architecture | structure | Having a tunic. |
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