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maturation |
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CHARACTER |
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Timing of the attainment of functional maturity, sometimes relative to other structures, sometimes as to constituent structures relative to each other. |
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subpetiolar |
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insertion |
|
Just below the point of petiole insertion. |
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diffuse |
|
architecture |
plant, stem |
Having branches remote and divergent to divaricate. |
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symmetric(al) 1 |
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plane shape |
|
Divisible into essentially equal halves along one or more lines or planes. |
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obturbinate |
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solid shape |
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Inversely turbinate (top-shaped). See also pyriform (pear-shaped). |
|
drupaceous |
|
architecture |
fruit |
Having the structure and texture of a drupe. |
|
tepal |
|
STRUCTURE |
|
Any member of an undifferentiated perianth; may be green and foliaceous or colored and petaloid, distinct or else connate with one or more others, and/or free or else adnate with one or more other floral structures. |
|
epidermal cell |
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STRUCTURE |
|
Any of the unspecialized cells of an epidermis; i.e., any other than stomatal guard cells or cells directly associated with trichomes. While the latter specialized cells are also properly epidermal cells, they are treated separately for descriptive purposes and, for the sake of convenience, use of the general term is restricted to the unspecialized cells that constitute the bulk of an epidermis. |
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percurrent 1 |
|
architecture |
primary or secondary laminar veins |
Running through the entire length of the lamina (blade), or all the way to its margin. |
|
false |
|
derivation |
indusium |
Constituting a marginal fold of the lamina as a whole and not a distinct enation from the epidermis. |
|
foliar |
|
position |
|
Upon or otherwise directly associated with the leaves. |
|
umbel |
|
nominative |
inflorescence |
Pedunculate, determinate or indeterminate, simple or compound and apparently polychotomous, with one or more pedicellate flowers terminating each ultimate axis, the pedicels of each such floral set and the branches (rays) arising from each axial subdivision diverging from each other like the ribs of an umbrella, the whole plane, convex or concave distally. |
|
geminicolpate |
|
architecture |
pollen grain |
Having four or more surficial grooves (colpi) disposed in pairs. |
|
radiate 1 |
|
architecture |
capitulum (head) |
Bearing one or more peripheral series of florets that are pistillate (either fertile or sterile) or neuter and that have zygomorphic corollas, and one or more central series of bisexual or functionally staminate florets that have actinomorphic corollas; in Asteraceae (Compositae). |
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basicaulous |
|
position |
|
At or very near the stem base. |
|
rhachis |
|
STRUCTURE |
|
See rachis. |
|
axillary |
|
insertion |
|
Within the axil; nodal and at or very close to the vertex of the distal angle between a lateral structure, especially a leaf, and the axis that bears it. |
|
heterotrophic |
|
nutrition |
plant |
Dependent upon other organisms for some or all of its essential nourishment, assimilating such materials either directly from the other organisms, living or dead, or from their products. |
|
adherent |
|
fusion |
dissimilar structure(s) |
Superficially joined with or to one or more other dissimilar structures, the connection(s) with no significant histological continuity. See also coherent. |
|
apex pl. apices |
|
CHARACTER |
|
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 ). |
|
secund 2 |
|
architecture |
stem |
Having the petioles oriented such that the main bodies of all the leaves lie to one side of the bearing stem. |
|
involute 1 |
|
margin |
|
Rolled adaxially. |
|
shoot 2 |
|
STRUCTURE |
|
A vascularized axis that is differentiated into nodes and internodes and that branches exogenously from the former, together with any non-axial structures borne from it. |
|
collar 2 |
|
FEATURE |
|
The junction between the sheath and blade of a leaf; esp. in Poaceae (Gramineae). |
|
lineolate 2 |
|
relief |
|
Finely lineate, the depressions or protrusions short and often irregularly oriented. |
