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sepal |
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STRUCTURE |
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One of the one or more constituent members of a calyx; usually green and leaf-like, but sometimes with color and/or texture otherwise, sometimes petaloid; may be distinct or else connate with one or more others and/or may be free or else adnate to one or more other floral structures. |
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knee 2 |
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STRUCTURE |
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An emergent portion of an otherwise normally submerged secondary root of a wetland tree, resembling a bent human knee. |
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spathe |
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STRUCTURE |
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A usually relatively large, sometimes showy, foliose bract subtending and sometimes partially enclosing an inflorescence, esp. a spadicate one; in Liliidae (monocotyledons). |
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epiphyllous |
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position |
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Upon the leaves, or partially adnate thereto and apparently arising therefrom. |
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sinuate |
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margin |
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Having regular, curved, smoothly connected, alternating concavities and convexities. See also repand. |
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manifestation |
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CHARACTER |
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Degree or nature of evidence when present within the context in point. |
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naked 2 |
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architecture |
bud |
Lacking enclosing protective scales, the outermost embryonic components exposed and not differing significantly from those within. See also perulate. |
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floating 2 |
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location |
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At or upon the surface of water. |
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surface |
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FEATURE |
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The exterior or bounding area or layer of any structure, regarded as being infinitely thin; usually described as to relief, reflectance, and/or vesture. |
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obovate |
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plane shape |
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Inversely ovate (egg-shaped). |
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non-septate |
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architecture |
trichome |
Lacking transverse inter- or intracellular septa or partitions. |
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tetrad |
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STRUCTURE |
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A group of four pollen grains originating from a single pollen mother cell. |
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cirrhous |
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apex |
|
Having a narrow spiral tip that is a continuation of the central primary vein. |
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trioecious |
|
reproduction |
taxon |
Having some flowers or spikelets functionally unisexual and some bisexual, some plants having only staminate or only pistillate types, other plants having only bisexual types. |
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aerial |
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location |
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Above ground or water level. |
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pappose |
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architecture |
flower, fruit |
Bearing a pappus; esp. in Asteraceae (Compositae). |
|
perisperm |
|
STRUCTURE / SUBSTANCE |
|
A genetically diploid (2n chromosomes) nutritive tissue in a seed; containing stored carbohydrate and/or oil utilized by the embryo prior to and especially upon germination; derived from the nucellus. See also endosperm (albumen). |
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valve |
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STRUCTURE |
|
Any longitudinal segment of a fruit wall delimited by lines of dehiscence. |
|
zoned |
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coloration |
|
Having two or more fairly distinctly delineated areas of contrasting hues and/or intensities. |
|
barb 1 |
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STRUCTURE |
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Any relatively short, stiff, sharp, acutely inserted or bent, antrorse or retrorse, terminal or lateral appendage. |
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gummy |
|
texture |
|
Highly viscous and sticky, liquid or more or less deformably solid, sometimes more or less elastic. |
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pubescent 1 (broad sense) |
|
pubescence |
|
Bearing trichomes. This is one of the most ambiguous terms in the botanical lexicon; it should not be used unless its intended meaning is explicit. |
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glochidiate |
|
pubescence |
|
Bearing glochids (glochidia). |
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resinous 2 |
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texture |
|
Having the consistency of resin. |
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crassate |
|
architecture |
|
Relatively thick for the type of structure or in the taxonomic context. |
