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tiller |
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STRUCTURE |
|
An erect or ascending stem that branches from the base of another at or below the surface of the ground; esp. in Poaceae (Gramineae) and other monocotyledons (Liliidae). |
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present |
|
presence |
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Occurring within the context in point. |
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barb 2 |
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STRUCTURE |
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A trichome terminated by one or two small, relatively short, stiff, sharp, acutely reflexed appendages. |
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hilum 2 pl. hila |
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FEATURE |
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The more or less central point within a starch grain of intracellular origin, about which the successive layers of starch were accreted more or less symmetrically. |
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trichotomocolpate |
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architecture |
pollen grain |
Having a triradiate surficial groove (colpus). |
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hygroscopic |
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architecture |
structure |
Increasing or decreasing in size according to the presence or absence of surrounding moisture, due to differential swelling or shrinking of component anatomical structures. |
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discoid 2 |
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architecture |
capitulum (head) |
Bearing florets that all have actinomorphic corollas and that are all bisexual, or all functionally staminate, or all functionally pistillate; in Asteraceae (Compositae). |
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acrocaulous |
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position |
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At or very near the stem tip. |
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pseudoterminal |
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insertion |
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Only apparently terminal; originally subapical but displaced toward the apex by differential growth during development. |
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collateral |
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position |
buds |
In pairs within or immediately straddling the leaf axils, the members of a pair lateral to one another. |
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brachiate |
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architecture |
axis |
Having alternate, divaricate branches. |
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indehiscent |
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dehiscence |
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Not splitting or forming an aperture at maturity, the contents being released for dispersal only after decay, digestion, or erosion of the structure. |
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pappose |
|
architecture |
flower, fruit |
Bearing a pappus; esp. in Asteraceae (Compositae). |
|
…seriate 1 |
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architecture |
trichome |
Multicellular with the number of longitudinal columns of superposed cells indicated by the prefix; as in biseriate, multiseriate, uniseriate. |
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free-central |
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placentation |
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Upon the free axial column of a compound, unilocular ovary. |
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subpetiolar |
|
position |
|
Just below the point of petiole insertion. |
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internodal |
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insertion |
|
Upon or otherwise directly associated with the internodes. |
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peltate |
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architecture |
foliaceous structure |
Petiolate with the petiole attached to the abaxial face of the blade at some point within the margin and otherwise free from the blade. |
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valvate 4 |
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dehiscence |
fruit |
With longitudinal segments of the wall (valves) separating partly or wholly from one another, spreading outward from the base or apex, and sometimes falling away. |
|
ellipsoid(al) |
|
solid shape |
|
Elliptic in any median longitudinal section; elongate, transversely circular, broadest at the middle, and symmetrically convex-attenuate to rounded ends. See also oblong. |
|
gamophyllous |
|
architecture |
plant, shoot axis, involucre |
Having pairs or whorls of leaves or bracts that are connate at their edges. |
|
raphe |
|
STRUCTURE |
|
That portion of the funicle adnate to the integument of an anatropous ovule; represented by a longitudinal ridge or other discontinuity in the surface and/or color of the testa on one side of the mature seed. |
|
superior 1 |
|
insertion |
indusium |
Inserted at or near the apex of the sorus, distal to the sporangia. |
|
soft |
|
texture |
|
Yielding under slight pressure. |
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vexillate |
|
aestivation |
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Having a larger member oriented more or less perpendicular to and folded about the others. |
