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sulcus pl. sulci |
= colpus, fossula, furrow, groove, vallecula |
FEATURE |
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An elongate depression that is relatively shallow and narrow. |
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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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…verticillate |
= …cyclic, …seriate, …whorled |
arrangement |
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Disposed in the number of verticils (cycles, series, whorls) indicated by the prefix; as in five-whorled, 3-whorled. |
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attenuate 1 |
= concave-tapered |
base |
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Gradually diminishing in width or diameter toward the proximal end, the sides longitudinally concave. Corresponds with acuminate for apex shape. |
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median |
= central, medial |
insertion |
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At, upon, or closely ranged about the structural or symmetrical midpoint or axis. |
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bulliform |
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solid shape |
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Resembling a blister; broad, relatively thin at the periphery, the lower surface approximately flat, the upper shallowly to strongly convex. |
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oblong 1 |
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plane shape |
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Compressed-elliptic, the sides approximately parallel from near one end to near the other. See also elliptic(al) (oval). |
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penicillate |
= broom-shaped, muscariform |
solid shape |
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Having a proximal axis that bears a distal cluster of elongate slender branches or appendages, these variously ascending to erect; like a broom. |
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crena pl. crenae |
= scallop |
FEATURE |
|
A rounded, marginal convexity or concavity in a series of such that alternate regularly and are oriented more or less perpendicular to the generalized perimeter of a laminar structure. See also crenule (scalloplet), dens (tooth), sawtooth, sawtoothlet, toothlet. |
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primary axis |
> ray |
STRUCTURE |
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A main or first-order axis within any specified, uniformly delimited structural context. |
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fovea pl. foveae |
= pit, scrobis |
FEATURE |
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A small, rounded depression. |
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spinescent |
|
architecture |
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Becoming spinose. |
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insertion |
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CHARACTER |
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Mode or locus of attachment of a structure to some dissimilar bearing structure. The lexicons relating to insertion and position overlap to a great degree, since these two morphological concepts are often inseparable in practice. Also overlaps conceptually with arrangement, habit, orientation, and shape. |
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throat 1 |
|
STRUCTURE |
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The far distal portion of a perianth, calyx, or corolla tube, or of a leaf sheath, surrounding the orifice of the tube or sheath, sometimes constricted relative to the diameter of the main body of the tube or sheath; except in disc florets of Asteraceae (Compositae). |
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ligule 2 |
|
STRUCTURE |
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An adaxial, distal enation from a leaf sheath, especially in most grasses (Poaceae) and sedges (Cyperaceae); usually unitary and membranous, sometimes instead consisting of a row of ciliate processes. See also hastula. |
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vallecular |
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insertion |
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In or otherwise directly associated with the valleculae; esp. in fruits of Apiaceae (Umbelliferae). |
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actinodromous |
|
venation |
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Having three or more primary veins that diverge radially from a point at or above the base of the blade and run toward the margin, reaching it or not. |
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areole 1 |
= areola |
STRUCTURE |
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Any distinctive surficial discontinuity of generally circular outline, whether concave, flush, or convex; when protuberant, sometimes bearing trichomes or spines, as in some Cactaceae. This term is used only when such entities are deemed structurally distinctive enough to merit description in their own rights, rather than as aspects of the surface. |
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bracteole 1 |
= bractlet; < bract |
STRUCTURE |
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A diminutive bract, or a bract that is smaller than others present. |
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node |
|
STRUCTURE |
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One of the evident sectors of a stem that occur sequentially along its length and from which leaves (megaphylls) and lateral branches arise exogenously. The anatomy of nodes differs from, but is not abruptly distinct longitudinally from, that of the intervening sectors (internodes), with which it is smoothly confluent and from which is distinguished by the lateral transit and egress of vascular traces interconnecting the stem and the leaves and branches that it bears. |
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corniculum pl. cornicula |
= horn |
STRUCTURE |
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A straight or curved, slenderly conic or conoidal protrusion or terminal portion that resembles an animal horn. |
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pollen |
|
STRUCTURE |
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Collectively, the spores or grains produced within the thecae of anthers, each containing a very small microgametophyte (or its evolutionary homologue); serving as disseminules from which microgametes are released after transport to a receptive micropylar pollen droplet (in Pinophyta) or stigma (in Magnoliophyta) by a variety of vectors, notably wind, water, insects, bats, and birds. |
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epidermis pl. epidermides, epidermises |
|
STRUCTURE |
|
The anatomically distinct, outermost, living tissue that encloses and protects the other tissues of a plant organ or part, usually overlaid by an exuded waxy cuticle; resulting from primary growth, disrupted and shed as a consequence of secondary growth if that occurs; consisting mainly of cells not further specialized, otherwise including various types of more specialized cells associated with trichomes and stomates. |
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scallop |
= crena |
FEATURE |
|
A rounded, marginal convexity or concavity in a series of such that alternate regularly and are oriented more or less perpendicular to the generalized perimeter of a laminar structure. See also sawtooth, sawtoothlet, scalloplet (crenule), tooth (dens), toothlet. |
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stomate-bearing |
= stomatiferous |
architecture |
|
Having stomates present in the epidermis. |
