…merous |
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architecture |
compound or compound-complex structure |
Having the number of equivalent component parts indicated by the prefix (e.g., petals in a corolla), or having different component sets of equivalent parts of that number in each set (e.g., calyx and corolla in a perianth); as in monomerous, oligomerous, polymerous, tetramerous, trimerous. |
squarrose |
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orientation |
lateral structure |
Having the proximal portion appressed and the distal portion deflexed, the latter more or less perpendicular to the surface of the bearing structure. |
marginal |
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insertion |
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Upon or otherwise directly associated with the margins. |
alternate 1 |
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arrangement |
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Inserted singly along the axis, each at a different level and each diverging on a different radius than the ones next above and below. |
straight |
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course |
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Lacking significant curves or bends. |
motile |
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habit |
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Able to translocate by intrinsic means, as by flagellar propulsion. |
antipetalous |
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insertion |
equivalent floral structures |
Each inserted directly above or below a petal. In place of this term, the phrase "opposite the petals" is often used, but that contradicts the sense of opposite as otherwise employed (arrangement of lateral structures along an axis) and should be avoided. |
deliquescent 1 |
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architecture |
axis, laminar vein |
Branching laterally and repeatedly such that the initial axis loses its prominence over the length of the structure and seems to dissolve into the succesive orders of branches. See also excurrent. |
summer annual |
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nominative |
plant |
Annual, germinating in spring or early summer, reproducing sexually with no prolonged vegetative stage beforehand, and dying by late summer or autumn. See also winter annual. |
dovetailing |
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habit |
trichome |
Papillate and serving to hold a surface to the opposing one of an appressed structure by interlocking with others on the opposing surface; sometimes furcate. |
nucellus pl. nucelli |
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STRUCTURE |
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The distinct, genetically diploid tissue layer immediately surrounding the embryo sac of an ovule; often considered equivalent to a megasporangium wall. |
angled |
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solid shape |
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Having sides that meet at acute or obtuse angles. |
thallus 1 pl. thalli |
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STRUCTURE |
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The vegetative portion of a shoot when not differentiated into stem and leaves; esp. in Lemnaceae. |
aseptate |
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architecture |
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Lacking internal walls or partitions (septae). |
arcuate 1 |
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course |
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Curving more or less regularly in one direction. |
epibracteal |
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insertion |
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Upon the bracts, or partially adnate thereto and apparently arising therefrom. |
opaque |
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coloration |
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Not transmitting light. |
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. |
parallelodromous |
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venation |
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Having two or more primary veins that run more or less parallel to one another over most of the laminar length and converge near the apex. |
erose 1 |
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margin |
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Having rough, very irregular depressions throughout. |
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. |
flagellum pl. flagella |
|
STRUCTURE |
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A very slender whip-like structure that extends from the main body of an antherozoid and, by active undulation, propels the cell through a liquid medium. |
prop-rooted |
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architecture |
plant |
Bearing and buttressed by prop roots. |
poricidal |
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dehiscence |
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Forming one or more apertures in the exterior wall, usually apically or sub-apically, through which the contents pass to the outside. |
fruity |
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odor |
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Sweetly to pungently fragrant and reminiscent of fruit. |