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trapeziform |
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plane shape |
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Four-sided and either asymmetrical or bilaterally symmetrical like a triangle truncated distally perpendicular to its central axis. |
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tree |
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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. |
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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. |
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tree-like |
= dendritic |
architecture |
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Like the branched axial structure of a tree. |
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tri… 1 |
= three-… |
prefix |
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Indicating presence of or constitution by three entities of the type denoted by the term's stem; as in tricarpellate, trifurcate, trilocular. |
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tri… 2 |
= thrice-…, triple-… |
prefix |
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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. |
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trichome |
> bristle, capillus, glochid, glochidium, hair, lepis, scale, seta, squama, squamella, squamule; >< cilium |
STRUCTURE |
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Any superficial, unicellular or multicellular structure arising entirely from an epidermis. Unlike other epidermal enations or coverings, trichomes are cellular structures. |
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trichotomocolpate |
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architecture |
pollen grain |
Having a triradiate surficial groove (colpus). |
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trichotomous |
|
architecture |
axis |
Branching by division of the apical meristem producing three coordinate but not necessarily equal derivatives from each division. |
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trigamous |
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reproduction |
inflorescence |
Bearing flowers of three differing sexual constitutions; esp. in Asteraceae (Compositae). |
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trigeminous |
= tergeminate, trijugate |
architecture |
foliaceous structure |
Compound with three orders of leaflets, each order bifoliolate. |
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trijugate |
= tergeminate, trigeminous |
architecture |
foliaceous structure |
Compound with three orders of leaflets, each order bifoliolate. |
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trilete |
|
architecture |
spore |
Having a triradiate tetrad scar. |
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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. |
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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-…. |
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triquetrous |
= three-angled, trigonous; > deltoid, obdeltoid |
solid shape |
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Elongate with three sides that meet at acute or obtuse angles. |
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trochlear |
= pulley-wheel-shaped |
solid shape |
|
Discoid (disciform) but with the circumferential surface concave between faces. |
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trophophyll |
= sterile frond |
STRUCTURE |
|
A frond that does not bear sporangia; in Polypodiophyta. See also fertile frond. |
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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. |
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true |
|
derivation |
indusium |
Constituting a distinct enation from the epidermis, not simply a marginal fold of the lamina as a whole. |
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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. |
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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. |
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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. |
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trumpet-shaped |
= tubiform |
solid shape |
|
Obteretely tubular with a relatively short distal flare (the limb if a perianth, calyx, or corolla). |
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truncate 1 |
= abrupt |
apex |
|
Having a distal boundary that is generally straight or plane and approximately perpendicular to the central axis. |