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non-porous |
|
porosity |
|
Lacking vessels, the tracheary elements limited to tracheids and, sometimes, fiber-tracheids. |
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squarrose |
|
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. |
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cell 1 |
|
STRUCTURE |
|
Any of the basic structural/functional units that collectively or individually make up the various tissues of a plant; comprising, at least while physiologically active, a nucleus with included genetic material (chromosomes), a surrounding cytoplasm with included organelles (e.g., ribosomes, mitochondria, plastids), an enclosing membrane, and an exterior cellulosic wall. |
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latex pl. latices, latexes |
|
SUBSTANCE |
|
A moderately viscous and sticky exudate, often milky, sometimes otherwise colored or clear. Overlaps conceptually with gum. |
|
exudation |
|
CHARACTER |
|
Discharged substance, as to type. |
|
sap |
|
SUBSTANCE |
|
Generally, the fluid content of a plant body; more precisely, the sugary fluid transported by the phloem. |
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prolate |
|
plane shape |
|
Symmetrically elongate parallel to the developmental or polar axis. |
|
cyme |
|
nominative |
inflorescence |
Determinate and constituting a compound dichasium or monochasium, the flowers maturing from the center outward (i.e., the distal or inner flowers maturing first); often more or less flat-topped. See also cymule, dichasium, helicoid cyme, monochasium, rhipidium, scorpioid cyme. |
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ciliate |
|
margin |
|
Having fine, hair-like trichomes (cilia) oriented in the general plane of the structure. |
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opaque |
|
coloration |
|
Not transmitting light. |
|
scarious |
|
texture |
|
Very thin, dry, and not green. |
|
axil |
|
FEATURE |
|
The space bounded by and near the vertex of the distal angle between a lateral structure, especially a leaf, and the axis that bears it. |
|
derivation |
|
CHARACTER |
|
Ontogenetic origin. |
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stilt-rooted |
|
architecture |
plant |
Bearing and partly supported by stilt roots. |
|
basiramous |
|
architecture |
axis |
Branching at or near the base. See also basicauliramous. |
|
diplecolobal |
|
arrangement |
cotyledons |
Incumbent but with the cotyledons folded together twice or more, the folds transverse. |
|
strobiloid |
|
architecture |
flower |
Characterized by a general lack of adnation among the different sets of basic floral structures, any significant degree of fusion limited to connation within sets, thus with ovary(ies) superior and lacking a floral tube. |
|
coating |
|
CHARACTER |
|
Exudate that covers the surface proper. See also indumentum (vesture), pubescence. |
|
subtending |
|
position |
|
Arising from the axis just below and very near to the base of some other specified lateral structure. This term is meaningless if the structure that is subtended is not indicated. |
|
perennial 2 |
|
nominative |
plant |
Of perennial duration. |
|
velamen pl. velamina |
|
STRUCTURE |
|
A thin, often chartaceous (papery, papyraceous) or pergamentaceous (parchment-like), outermost tissue layer of an aerial root; esp. in Orchidaceae. |
|
adventitious bud |
|
STRUCTURE |
|
A vegetative or floral bud that arises directly from a root or from some site on a shoot other than a leaf axil or stem apex. |
|
infrapetiolar |
|
insertion |
bud |
Axillary and surrounded by the petiole base at maturity. |
|
monochasiate |
|
architecture |
inflorescence |
Comprising one or more simple or compound monochasia. See also cincinnate, cymose, cymulose, dichasiate, helicoid-cymose, scorpioid-cymose. |
|
reclinate |
|
vernation |
|
Each with its blade oriented downward and parallel to the proximal portion of its distally recurved petiole. |
