twig |
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STRUCTURE |
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The terminal portion of an ultimate branch of a woody stem, representing the most recent increment of growth and bearing or having borne the current or most recent increment of leaves. See also branchlet. |
flagellum pl. flagella |
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STRUCTURE |
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A very slender whip-like structure that extends from the main body of an antherozoid and, by active undulation, propels the cell through a liquid medium. |
circumscissile |
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dehiscence |
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Splitting transversely through the exterior wall about its entire circumference, the resulting upper cap-like portion falling away. |
prop-rooted |
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architecture |
plant |
Bearing and buttressed by prop roots. |
poricidal |
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dehiscence |
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Forming one or more apertures in the exterior wall, usually apically or sub-apically, through which the contents pass to the outside. |
fruity |
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odor |
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Sweetly to pungently fragrant and reminiscent of fruit. |
rachilla 2 var. rhachilla |
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STRUCTURE |
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A second-order axis in an inflorescence, especially the axis bearing the florets in a spikelet; esp. in Cyperaceae, Poaceae (Gramineae). |
solitary 2 |
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habit |
plants |
Growing singly; not aggregated. |
gynobasic |
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insertion |
style |
Apparently arising from the ovary base. |
pulvinate 1 |
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architecture |
inflorescence axis, petiole |
Having a pulvinus. |
glomerule |
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nominative |
inflorescence |
A compact cluster of capitula (heads), sometimes subtended by an involucre; thus, a compound capitulum (head); esp. in Asteraceae (Compositae). |
reticulodromous |
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venation |
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Having a single median primary vein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, branching repeatedly, becoming less distinct, and yielding a dense higher-order reticulum near the margin. |
heterocolpate |
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architecture |
pollen grain |
Having long, narrow, regularly disposed lacunae (pseudocolpi). |
receptacular |
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insertion |
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Upon, arising from, or otherwise directly associated with the receptacle. |
apex pl. apices |
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CHARACTER |
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Configuration of the uppermost, distal, or terminal portion of a structure, its extent determined somewhat subjectively in relation to the shape of the structure as a whole. The concept of apex varies from one descriptive context to another, since the apex is not a clearly delimited, morphologically distinct entity. The terms for describing apical condition are not strictly coordinate logically — some are more inclusive than others, some describe conditions involving what can be regarded as appendages, and some refer to the apex in a developmental as well as a strictly topological sense — and precise characterization may require using more than one descriptor. The semantic antecedent of some descriptors is "apex," whereas the antecedent of others is the structure as a whole (e.g., leaf ). |
involucral |
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derivation |
aril |
Produced from or a modification of a persistent involucre investing the seed. |
inframedial |
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insertion |
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Slightly below the middle of the structure in point. |
complex |
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architecture |
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Comprising two or more basic structural entities, at least two of which are dissimilar. |
asymmetric(al) 1 |
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solid shape |
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Not divisible into essentially equal halves along any line or plane. |
septal |
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insertion |
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Upon or otherwise directly associated with the septum or septa. |
longitudinal 1 |
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dehiscence |
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Parallel to the central axis. |
limp |
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texture |
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Lacking stiffness in in one or more dimensions, thus drooping or sagging where unsupported. |
stephanocolpate |
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architecture |
pollen grain |
Having more than three surficial grooves (colpi) oriented meridionally. |
contortuplicate 2 |
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vernation |
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Folded and twisted. |
…merous |
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architecture |
compound or compound-complex structure |
Having the number of equivalent component parts indicated by the prefix (e.g., petals in a corolla), or having different component sets of equivalent parts of that number in each set (e.g., calyx and corolla in a perianth); as in monomerous, oligomerous, polymerous, tetramerous, trimerous. |