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. |
…fossulate |
= …colpate, …furrowed, …grooved, …sulcate, …valleculate |
architecture |
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Having the number of fossulae indicated by the prefix; as in unifossulate, multifossulate, 5-fossulate. |
seta 1 pl. setae |
= arista, awn, bristle |
STRUCTURE |
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A slender, more or less straight and stiff, fine-pointed, terminal or subterminal appendage or prolongation, sometimes a continuation of the bearing structure's central primary vein, as on a glume, lemma, or palea in Poaceae (Gramineae). |
acerose |
= acicular, needle-shaped |
solid shape |
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Rounded in cross-section and very slenderly elongate, broadest near the middle, and gradually attenuate to an acute apex and a slightly blunter base; like a needle. |
base |
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CHARACTER |
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Configuration of the lowermost or proximal portion of a structure, its extent determined somewhat subjectively in relation to the shape of the structure as a whole. The concept of base varies from one descriptive context to another, since the base is not a clearly delimited, morphologically distinct entity. The terms for describing basal condition are not strictly coordinate logically — some are more inclusive than others, and some describe conditions involving what can be regarded as appendages — and precise characterization may require using more than one descriptor. The semantic antecedent of some descriptors is "base," whereas the antecedent of others is the structure as a whole (e.g., leaf ). |
cochleate |
= snail-shell-shaped |
solid shape |
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Relatively broad and short, basically round in transverse section, resembling a rapidly tapering spire overall, the exterior helically convoluted; like a snail shell. |
kidney-shaped 1 |
= reniform |
plane shape |
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Broadly elongate and arcuate, each end bluntly rounded; like the generalized outline of the broad face of a human kidney. |
ramentaceous |
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pubescence |
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Of small, fragile, scarious, planate trichomes. |
mound-shaped |
= cushion-shaped, pulvinate, pulviniform |
solid shape |
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Essentially round in transverse section, much broader than long or high, with a convex distal face that intersects either a more or less plane proximal face or, when the structure is sessile, its bearing surface. |
…grooved |
= …colpate, …fossulate, …furrowed, …sulcate, …valleculate |
architecture |
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Having the number of grooves indicated by the prefix; as in three-grooved, 5-grooved. |
spinulose |
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margin |
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Finely spinose. |
pneumatophore |
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STRUCTURE |
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A structurally and functionally specialized root serving as an aboveground aerating organ; found in some woody taxa of wet habitats, notably some mangroves. |
tartareous |
= tartar-like |
relief |
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Rough and crumbling spontaneously, becoming erose. |
liguliform |
= lorate, strap-shaped |
solid shape |
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Elongate and relatively thin with the opposite faces more or less plane and moderately narrow, their edges more or less straight and parallel over most of their length; resembling a strap. |
trowel-shaped |
= trullate, trulliform |
plane shape |
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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. |
round |
= orbiculate, orbicular misapplied |
plane shape |
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Circular. |
derivation |
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CHARACTER |
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Ontogenetic origin. |
obtuse 2 |
= blunt |
base |
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Bluntly angular; having an angular proximal portion whose generalized sides intersect at an angle of 90° or more. |
awl-shaped 1 |
= subulate |
plane shape |
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Narrowly triangular or truncate-triangular and broadest at the base; like the outline of the lateral face of an awl. |
stomate-bearing |
= stomatiferous |
architecture |
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Having stomates present in the epidermis. |
circumcaulous |
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position |
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Upon and surrounding the stem. |
pustulate |
= blistered, bullate, puckered |
relief |
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Having relatively coarse, irregularly disposed, rounded protrusions or convexities resembling blisters. See also papillate, papillose. |
cordate 2 |
= heart-shaped |
plane shape |
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Fairly regularly attenuate from a broad, bilobate base to a narrow apex, the lobes large, rounded, retrorse, and intersecting; like the stylized outline of the broad lateral face of a heart. See also obcordate. |
mesochilium |
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STRUCTURE |
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The central portion of a labellum (lip) that has distinct proximal, distal, and central parts; in Orchidaceae. See also epichilium, hypochilium. |
semicraspedodromous |
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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, each secondary vein running thence toward and bifurcate near the margin, one branch terminating at the margin, the other upwardly arcuate and merging with the superadjacent secondary vein, thus forming one of a series of marginal loops. |