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adventitious root |
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STRUCTURE |
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A root that arises laterally from some part of a shoot, often from the lower portion of a main stem. |
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whorled |
= cyclic, seriate, verticillate |
arrangement |
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Disposed along the axis in groups of three or more, the members of each group (cycle, series, verticil, whorl) inserted around the axis at the same level. |
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squama pl. squamae |
= lepis; < scale, trichome |
STRUCTURE |
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A relatively thick, planate trichome. See also squamella (squamule). |
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broom-shaped |
= muscariform, penicillate |
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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pouch-shaped |
= bag-shaped, saccate, sack-shaped |
solid shape |
|
Irregularly obovoid with an exterior aspect intermediate between inflated and flaccid; like a closed pouch or bag. |
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clustered 1 |
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arrangement |
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Disposed in one or more aggregates, the members of each inserted close together, thence widely divergent from one another. |
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flabelliform |
= fan-shaped, flabellate |
solid shape |
|
Strongly compressed, broadest near the apex and attenuate to a narrow base, plaited longitudinally, the alternating folds radiating from the base, the whole basically triangular in broad aspect; like a partially expanded folding fan. |
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ligule 2 |
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STRUCTURE |
|
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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sericeous |
= silky |
pubescence |
|
Of or bearing long, fine, appressed, capillate trichomes and like silk to the touch. |
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series |
= cycle, verticil, whorl |
STRUCTURE |
|
A set of three or more lateral structures that are inserted around an axis at the same level. |
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obtrulliform |
= obtrullate |
plane shape |
|
Inversely trulliform (trowel-shaped, trullate). |
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dorsiventral |
|
architecture |
|
Having structurally distinct abaxial (dorsal) and adaxial (ventral) portions or aspects. |
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glandless |
= eglandular |
architecture |
|
Lacking glands. |
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subapical |
= subterminal |
position |
|
Lateral and just below the apex. |
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…angled |
= …gonous |
solid shape |
|
Elongate with the number of longitudinal angles indicated by the prefix, the intervening sides transversely flat or curved; as in four-angled. See also …angular (…gonal), deltoid, obdeltoid, triquetrous. |
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intravaginal |
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position |
|
Within the leaf sheath. |
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barbellulate |
|
architecture |
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Bearing one or more barbellules (barbellulae). |
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ennea… |
= nine-… |
prefix |
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Indicating presence of or constitution by nine entities of the type denoted by the term's stem; as in enneandrous, enneafoliolate, enneastylous. |
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vexillate |
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aestivation |
|
Having a larger member oriented more or less perpendicular to and folded about the others. |
|
mentum pl. menta |
= column foot |
STRUCTURE |
|
A lateral, often nectariferous protrusion from the proximal portion of a column, opposite the labellum, projecting in front of the rest of the flower; in Orchidaceae. |
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cucullate 2 |
= cuculliform, hood-shaped |
solid shape |
|
Convex or compressed-convex overall with a distal peak or ridge, relatively thin-walled and essentially hollow with the interior open to one side below the distal portion; resembling a hood or cowl. See also galeate (galeiform, helmet-shaped), which overlaps conceptually. |
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spinescent |
|
architecture |
|
Becoming spinose. |
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parchment-like |
= pergamentaceous |
texture |
|
Very thin, pliable, and fairly tough; like parchment. See also chartaceous (papery, papyraceous), membranaceous (membranous). |
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boat-shaped |
= cymbiform, navicular |
solid shape |
|
Like the generalized form of a boat hull, the walls relatively thin to moderately thick, the interior essentially empty and open along one side. |
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hemispheric(al) |
|
solid shape |
|
Half-spheric(al); broadest at the base and uniformly rounded to the apex, circular in any transverse section, and half-circular in any median longitudinal section. |
