|
laminar 2 |
|
solid shape |
|
Relatively very thin with parallel opposite broad faces, the whole plane or variously curved. Structures to which this term, along with any other three-dimensional ones, is applicable are often also described as though only two-dimensional, using terms that are implicitly understood to refer only to the outline of the broad faces. |
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exfoliating |
|
relief |
bark |
Shallowly and distantly fissured, falling away in thin, relatively large patches or sheets. |
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rosette |
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STRUCTURE |
|
A set of leaves that are strongly congested and disposed in radial symmetry about the main stem at or very near its base, seeming to arise at the same level and often overlapping laterally; esp. the overwintering leaves of perennial herbs. |
|
legume |
|
nominative |
fruit |
Dry, septicidal, one-loculed and derived from a single, superior, simple ovary; dehiscing along two sutures, one abaxial, one adaxial; in Fabaceae (Leguminosae). See also loment. |
|
pollinarium pl. pollinaria |
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STRUCTURE |
|
A pollinium together with, when present, its stipe and viscidium; the entire unit of pollinium dispersal. |
|
obscure |
|
manifestation |
|
Hardly evident. |
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salt-excreting |
|
exudation |
|
Accumulating salt and discharging it directly to the exterior in a concentrated aqueous solution, the salt then crystallizing on the exterior following evaporation of the fluid medium; when salt-excreting glands are indicated in the nominative, usually they are called simply salt glands. |
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dehiscence |
|
CHARACTER |
|
Mode of opening (splitting or forming apertures). |
|
primocane |
|
STRUCTURE |
|
A biennial or perennial stem before it has begun flowering, when the latter does not occur until at least its second season of growth; esp. in Rubus (Rosaceae). |
|
sterigma pl. sterigmata |
|
STRUCTURE |
|
A portion of a lamina that is prolonged and adherent to the supporting axis beneath the point of vascular insertion. |
|
fistulose |
|
solid shape |
|
Basically tubular with closed ends. |
|
biennial 1 |
|
duration |
plant, stem |
Normally living two years; germinating or forming and growing vegetatively during one cycle of seasons, then reproducing sexually and dying during the following one. |
|
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. |
|
strigose |
|
pubescence |
|
Bearing sharp, rigid, appressed, capillate trichomes. See also strigillose (strigulose). |
|
indusium pl. indusia |
|
STRUCTURE |
|
A protective membrane that is an outgrowth from the epidermis and covers a sorus during its maturation; in Polypodiophyta. |
|
parasitic |
|
nutrition |
plant |
Heterotrophic and obtaining essential nourishment directly from other living organisms that derive no reciprocal benefit. |
|
unifacial |
|
architecture |
|
Having two opposite broad surfaces that are essentially similar in appearance. |
|
dull |
|
reflectance |
|
Reflecting only a low proportion of incident light, with no apparent sheen. |
|
rachilla 2 var. rhachilla |
|
STRUCTURE |
|
A second-order axis in an inflorescence, especially the axis bearing the florets in a spikelet; esp. in Cyperaceae, Poaceae (Gramineae). |
|
connate-perfoliate |
|
architecture |
opposite laminar structures |
Having the bases in each pair fused and together encircling the bearing axis. See also amplexicaulous, perfoliate. |
|
bundle scar |
|
FEATURE |
|
A smaller scar within the bounds of a leaf scar at the point where a vascular bundle traversed the abscission layer between stem and leaf. |
|
intravaginal |
|
insertion |
|
Within the leaf sheath. |
|
percurrent 2 |
|
architecture |
tertiary laminar veins |
Perpendicular to and interconnecting adjacent parallel secondary veins, the secondary and tertiary veins together forming a scalariform pattern. |
|
simple 2 |
|
architecture |
trichome |
Unicellular and unbranched. |
|
embryo |
|
STRUCTURE |
|
The rudimentary spermatophyte contained within a viable seed. |
